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pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (v2/templeLineOfCredit/TempleLineOfCredit.sol)

import { SafeERC20, IERC20 } from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import { mulDiv } from "@prb/math/src/Common.sol";

import { ITreasuryReservesVault } from "contracts/interfaces/v2/ITreasuryReservesVault.sol";
import { IInterestRateModel } from "contracts/interfaces/v2/interestRate/IInterestRateModel.sol";
import { ITempleLineOfCredit } from "contracts/interfaces/v2/templeLineOfCredit/ITempleLineOfCredit.sol";
import { ITlcStrategy } from "contracts/interfaces/v2/strategies/ITlcStrategy.sol";
import { CompoundedInterest } from "contracts/v2/interestRate/CompoundedInterest.sol";
import { ITempleCircuitBreakerProxy } from "contracts/interfaces/v2/circuitBreaker/ITempleCircuitBreakerProxy.sol";

import { SafeCast } from "contracts/common/SafeCast.sol";
import { CommonEventsAndErrors } from "contracts/common/CommonEventsAndErrors.sol";
import { TempleElevatedAccess } from "contracts/v2/access/TempleElevatedAccess.sol";

/* solhint-disable not-rely-on-time */

/**
 * @title Temple Line of Credit (TLC)
 * @notice Users supply Temple as collateral, and can then borrow DAI.
 * 
 * Temple is valued at the Temple Treasury Price Index (TPI)
 * User debt increases at a continuously compounding rate.
 * Liquidations occur when users LTV exceeds the maximum allowed.
 */
contract TempleLineOfCredit is ITempleLineOfCredit, TempleElevatedAccess {
    using SafeERC20 for IERC20;
    using SafeCast for uint256;
    using CompoundedInterest for uint256;

    /**
     * @notice The collateral token supplied by users/accounts
     */
    IERC20 public immutable override templeToken;

    /**
     * @notice DAI token -- the debt token which can be borrowed
     */
    IERC20 public immutable override daiToken;

    /**
     * @notice The Treasury Reserve Vault (TRV) which funds the DAI borrows to users/accounts.
     * - When users borrow, the DAI is pulled from the TRV
     *      (via the TlcStrategy, increasing the dUSD debt)
     * - When users repay, the DAI is repaid to the TRV 
     *      (reducing the dUSD debt of the TlcStrategy)
     * - When there is a liquidation, the seized Temple collateral is paid to the TRV
     *      (reducing the dTEMPLE debt of the TlcStrategy)
     */
    ITreasuryReservesVault public override treasuryReservesVault;

    /**
     * @notice The Strategy contract managing the TRV borrows and equity positions of TLC.
     */
    ITlcStrategy public override tlcStrategy;
    
    /**
     * @notice A record of the total amount of collateral deposited by users/accounts.
     */
    uint256 public override totalCollateral;

    /**
     * @notice A per user/account mapping to the data to track active collateral/debt positions.
     */
    mapping(address => AccountData) internal allAccountsData;

    /**
     * @notice Configuration and latest data snapshot of the debt tokens
     */
    DebtTokenConfig internal debtTokenConfig;
    DebtTokenData internal debtTokenData;

    /**
     * @notice Liquidations may be paused in order for users to recover/repay debt after emergency
     * actions
     */
    bool public override liquidationsPaused;

    /**
     * @notice The minimum borrow amount per transaction
     * @dev It costs gas to liquidate users, so we don't want dust amounts.
     */
    uint128 public override minBorrowAmount = 1000e18;

    /**
     * @notice New borrows and collateral withdrawals are checked against a circuit breaker
     * to ensure no more than a cap is withdrawn in a given period
     */
    ITempleCircuitBreakerProxy public immutable override circuitBreakerProxy;

    /**
     * @notice An internal state tracking how interest has accumulated.
     */
    uint256 internal constant INITIAL_INTEREST_ACCUMULATOR = 1e27;

    /**
     * @notice The precision used for Price, LTV, notional
     */
    uint256 internal constant PRECISION = 1e18;
    uint256 internal constant DOUBLE_PRECISION = 1e36;

    constructor(
        address _initialRescuer,
        address _initialExecutor,
        address _circuitBreakerProxy,
        address _templeToken,
        address _daiToken, 
        uint256 _maxLtvRatio,
        address _interestRateModel
    ) 
        TempleElevatedAccess(_initialRescuer, _initialExecutor)
    {
        circuitBreakerProxy = ITempleCircuitBreakerProxy(_circuitBreakerProxy);
        templeToken = IERC20(_templeToken);
        daiToken = IERC20(_daiToken);

        if (_maxLtvRatio > PRECISION) revert CommonEventsAndErrors.InvalidParam();
        if (_interestRateModel == address(0)) revert CommonEventsAndErrors.ExpectedNonZero();

        debtTokenConfig = DebtTokenConfig(
            uint96(_maxLtvRatio), 
            IInterestRateModel(_interestRateModel),
            false
        );
        debtTokenData = DebtTokenData({
            interestAccumulatorUpdatedAt: uint32(block.timestamp),
            totalDebt: 0,
            interestRate: 0,
            interestAccumulator: INITIAL_INTEREST_ACCUMULATOR
        });
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                         COLLATERAL                         */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /**
     * @notice Deposit Temple as collateral
     * @param collateralAmount The amount to deposit
     * @param onBehalfOf An account can add collateral on behalf of another address.
     */
    function addCollateral(uint128 collateralAmount, address onBehalfOf) external override notInRescueMode {
        if (collateralAmount == 0) revert CommonEventsAndErrors.ExpectedNonZero();
        emit CollateralAdded(msg.sender, onBehalfOf, collateralAmount);

        allAccountsData[onBehalfOf].collateral += collateralAmount;
        totalCollateral += collateralAmount;

        // No need to check liquidity when adding collateral as it 
        // only improves the liquidity.
        templeToken.safeTransferFrom(
            msg.sender,
            address(this),
            collateralAmount 
        );
    }

    /**
     * @notice Remove Temple collateral. (active borrow positions are not allowed to go above the max LTV)
     * @param amount The amount of collateral to remove
     * @param recipient Send the Temple collateral to a specified recipient address.
     */
    function removeCollateral(uint128 amount, address recipient) external override notInRescueMode {
        if (amount == 0) revert CommonEventsAndErrors.ExpectedNonZero();
        AccountData storage _accountData = allAccountsData[msg.sender];
        uint128 _collateral =  _accountData.collateral;
        if (amount > _collateral) revert CommonEventsAndErrors.InvalidAmount(address(templeToken), amount);

        // Ensure that this withdrawal doesn't break the circuit breaker limits (across all users)
        circuitBreakerProxy.preCheck(
            address(templeToken), 
            msg.sender, 
            amount
        );

        // Update the collateral, and then verify that it doesn't make the debt unsafe.
        _accountData.collateral = _collateral - amount;
        totalCollateral -= amount;
        emit CollateralRemoved(msg.sender, recipient, amount);

        _checkLiquidity(_accountData, _debtTokenCacheRO());

        templeToken.safeTransfer(
            recipient,
            amount
        );
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                           BORROW                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /**
     * @notice Borrow DAI (not allowed to borrow over the max LTV)
     * @dev NOTICE: There is no buffer between the maximum the user is able to borrow 
     * (based on their collateral and the maxLTV), and the point where the user can get liquidated.
     * Therefore do not borrow the max amount possible or the position will instantly be eligable to be
     * liquidated in the next block.
     * @param amount The amount to borrow
     * @param recipient Send the borrowed token to a specified recipient address.
     */
    function borrow(uint128 amount, address recipient) external override notInRescueMode {
        if (amount < minBorrowAmount) revert InsufficientAmount(minBorrowAmount, amount);

        AccountData storage _accountData = allAccountsData[msg.sender];
        DebtTokenCache memory _cache = _debtTokenCache();
        if (_cache.config.borrowsPaused) revert Paused();

        // Ensure that this new borrow doesn't break the circuit breaker limits (across all users)
        circuitBreakerProxy.preCheck(
            address(daiToken), 
            msg.sender, 
            amount
        );

        // Apply the new borrow
        {
            uint128 _totalDebt = _currentAccountDebt(
                _cache, 
                _accountData.debtCheckpoint, 
                _accountData.interestAccumulator,
                false // don't round up on the way in
            ) + amount;

            // Update the state
            _accountData.debtCheckpoint = _totalDebt;
            _accountData.interestAccumulator = _cache.interestAccumulator;
            debtTokenData.totalDebt = _cache.totalDebt = _cache.totalDebt + amount;

            // Update the borrow interest rates based on the now increased utilization ratio
            _updateInterestRates(_cache);
        }

        emit Borrow(msg.sender, recipient, amount);
        _checkLiquidity(_accountData, _cache);

        // Finally, borrow the funds from the TRV and send the tokens to the recipient.
        tlcStrategy.fundFromTrv(amount, recipient);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                            REPAY                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /**
     * @notice An account repays some of its borrowed DAI debt
     * @param repayAmount The amount to repay. Cannot be more than the current debt.
     * @param onBehalfOf Another address can repay the debt on behalf of someone else
     */
    function repay(uint128 repayAmount, address onBehalfOf) external override notInRescueMode {
        if (repayAmount == 0) revert CommonEventsAndErrors.ExpectedNonZero();

        AccountData storage _accountData = allAccountsData[onBehalfOf];
        DebtTokenCache memory _cache = _debtTokenCache();

        // Update the account's latest debt
        uint128 _newDebt = _currentAccountDebt(
            _cache, 
            _accountData.debtCheckpoint,
            _accountData.interestAccumulator,
            true // round up for repay balance
        );

        // They cannot repay more than this debt
        if (repayAmount > _newDebt) {
            revert ExceededBorrowedAmount(_newDebt, repayAmount);
        }
        unchecked {
            _newDebt -= repayAmount;
        }

        // Update storage
        _accountData.debtCheckpoint = _newDebt;
        _accountData.interestAccumulator = _cache.interestAccumulator;

        _repayToken(_cache, repayAmount, msg.sender, onBehalfOf);
    }

    /**
     * @notice An account repays all of its DAI debt
     * @dev The amount of debt is calculated as of this block.
     * @param onBehalfOf Another address can repay the debt on behalf of someone else
     */
    function repayAll(address onBehalfOf) external override notInRescueMode {
        DebtTokenCache memory _cache = _debtTokenCache();
        AccountData storage _accountData = allAccountsData[onBehalfOf];

        // Get the outstanding debt for Stable
        uint128 repayAmount = _currentAccountDebt(
            _cache,
            _accountData.debtCheckpoint,
            _accountData.interestAccumulator,
            true // use the rounded up amount
        );
        if (repayAmount == 0) revert CommonEventsAndErrors.ExpectedNonZero();

        // Update storage
        _accountData.debtCheckpoint = 0;
        _accountData.interestAccumulator = _cache.interestAccumulator;

        _repayToken(_cache, repayAmount, msg.sender, onBehalfOf);
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                       LIQUIDATIONS                         */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /**
     * @notice Liquidate one or more accounts which have exceeded the 
     * maximum allowed LTV.
     * The Temple collateral is seized, and the accounts debt wiped.
     * @dev If one of the accounts in the batch hasn't exceeded the max LTV
     * then no action is performed for that account.
     */
    function batchLiquidate(
        address[] calldata accounts
    ) external override notInRescueMode returns (
        uint128 totalCollateralClaimed,
        uint128 totalDebtWiped
    ) {
        if (liquidationsPaused) revert Paused();

        LiquidationStatus memory _status;
        DebtTokenCache memory _cache = _debtTokenCache();
        address _account;
        uint256 _numAccounts = accounts.length;
        for (uint256 i; i < _numAccounts; ++i) {
            _account = accounts[i];
            _status = _computeLiquidity(
                allAccountsData[_account], 
                _cache
            );

            // Skip if this account is still under the maxLTV
            if (_status.hasExceededMaxLtv) {
                emit Liquidated(_account, _status.collateral, _status.collateralValue, _status.currentDebt);
                totalCollateralClaimed += _status.collateral;
                totalDebtWiped += _status.currentDebt;

                // Clear the account data
                delete allAccountsData[_account];
            }
        }

        // burn the temple collateral by repaying to TRV. This will burn the equivalent dTemple debt too.
        if (totalCollateralClaimed > 0) {
            templeToken.safeIncreaseAllowance(address(treasuryReservesVault), totalCollateralClaimed);
            treasuryReservesVault.repay(templeToken, totalCollateralClaimed, address(tlcStrategy));
            totalCollateral -= totalCollateralClaimed;
        }

        // Remove debt from the totals
        if (totalDebtWiped > 0) {
            _repayTotalDebt(_cache, totalDebtWiped);
        }
    }
    
    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                            ADMIN                           */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /**
     * @notice Liquidation may be paused in order for users to recover/repay debt after emergency
     * actions
     */
    function setLiquidationsPaused(bool isPaused) external override onlyElevatedAccess {
        liquidationsPaused = isPaused;
        emit LiquidationsPausedSet(isPaused);
    }

    /**
     * @notice Set the minimum amount of Temple which must be borrowed on each call.
     */
    function setMinBorrowAmount(uint128 amount) external override onlyElevatedAccess {
        minBorrowAmount = amount;
        emit MinBorrowAmountSet(amount);
    }

    /**
     * @notice Update the TLC Strategy contract, and Treasury Reserves Vault (TRV)
     * @dev The TRV is granted access to spend DAI, in order to repay debt.
     */
    function setTlcStrategy(
        address newTlcStrategy
    ) external override onlyElevatedAccess {
        tlcStrategy = ITlcStrategy(newTlcStrategy);

        // Remove allowance from the old TRV
        address previousTrv = address(treasuryReservesVault);
        if (previousTrv != address(0)) {
            daiToken.safeApprove(previousTrv, 0);
        }

        address _trv = address(tlcStrategy.treasuryReservesVault());
        treasuryReservesVault = ITreasuryReservesVault(_trv);

        // Set max allowance on the new TRV
        {
            daiToken.safeApprove(_trv, 0);
            daiToken.safeIncreaseAllowance(_trv, type(uint256).max);
        }

        emit TlcStrategySet(newTlcStrategy, _trv);

        // The new TRV may have a different debt ceiling. Force an update to the interest rates.
        _updateInterestRates(_debtTokenCache());
    }

    /**
     * @notice Update the interest rate model contract for DAI borrows
     * @param interestRateModel The contract address of the new model
     */
    function setInterestRateModel(
        address interestRateModel
    ) external override onlyElevatedAccess {
        emit InterestRateModelSet(interestRateModel);
        DebtTokenCache memory _cache = _debtTokenCache();

        // Update the cache entry and calculate the new interest rate based off this model.
        debtTokenConfig.interestRateModel = _cache.config.interestRateModel = IInterestRateModel(interestRateModel);
        _updateInterestRates(_cache);
    }

    /**
     * @notice Set the maximum Loan To Value Ratio allowed for DAI borrows before the position is liquidated
     * @param maxLtvRatio The max LTV ratio (18 decimal places)
     */
    function setMaxLtvRatio(
        uint256 maxLtvRatio
    ) external override onlyElevatedAccess {
        if (maxLtvRatio > PRECISION) revert CommonEventsAndErrors.InvalidParam();

        emit MaxLtvRatioSet(maxLtvRatio);
        debtTokenConfig.maxLtvRatio = uint96(maxLtvRatio);
    }

    /**
     * @notice New borrows of DAI may be paused, for example if shutting down.
     */
    function setBorrowPaused(bool isPaused) external override onlyElevatedAccess {
        emit BorrowPausedSet(isPaused);
        debtTokenConfig.borrowsPaused = isPaused;
    }

    /**
     * @notice Elevated access can recover tokens accidentally sent to this contract
     * No user Temple collateral can be taken.
     */
    function recoverToken(
        address token, 
        address to, 
        uint256 amount
    ) external override onlyElevatedAccess {
        // Can't pull any of the user collateral.
        if (token == address(templeToken)) {
            uint256 bal = templeToken.balanceOf(address(this));
            if (amount > (bal - totalCollateral)) revert CommonEventsAndErrors.InvalidAmount(token, amount);
        }

        emit CommonEventsAndErrors.TokenRecovered(to, token, amount);
        IERC20(token).safeTransfer(to, amount);
    }

    /**
     * @notice Update and checkpoint the total debt up until now
     * Then recalculate the interest rate based on the updated utilisation ratio.
     */
    function refreshInterestRates(
    ) external override {
        _updateInterestRates(_debtTokenCache());
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                           VIEWS                            */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /**
     * @notice An view of an accounts current and up to date position as of this block
     * @param account The account to get a position for
     */
    function accountPosition(
        address account
    ) external override view returns (
        AccountPosition memory position
    ) {
        AccountData storage _accountData = allAccountsData[account];
        DebtTokenCache memory _cache = _debtTokenCacheRO();

        position.collateral = _accountData.collateral;
        position.currentDebt = _currentAccountDebt(
            _cache, 
            _accountData.debtCheckpoint,
            _accountData.interestAccumulator,
            true
        );

        position.maxBorrow = _maxBorrowLimit(_cache, position.collateral);
        position.healthFactor = _healthFactor(_cache, position.collateral, position.currentDebt);
        position.loanToValueRatio = _loanToValueRatio(_cache, position.collateral, position.currentDebt);
    }

    /**
     * @notice Get the current total DAI debt position across all accounts
     * as of this block.
     */
    function totalDebtPosition() external override view returns (
        TotalDebtPosition memory position
    ) {
        DebtTokenCache memory _cache = _debtTokenCacheRO();
        position.utilizationRatio = _utilizationRatio(_cache);
        position.borrowRate = _cache.interestRate;
        position.totalDebt = _cache.totalDebt;
    }

    /**
     * @notice Compute the liquidity status for a set of accounts.
     * @dev This can be used to verify if accounts can be liquidated or not.
     * @param accounts The accounts to get the status for.
     */
    function computeLiquidity(
        address[] calldata accounts
    ) external override view returns (LiquidationStatus[] memory status) {
        uint256 _numAccounts = accounts.length;
        status = new LiquidationStatus[](_numAccounts);
        DebtTokenCache memory _cache = _debtTokenCacheRO();
        for (uint256 i; i < _numAccounts; ++i) {
            status[i] = _computeLiquidity(
                allAccountsData[accounts[i]], 
                _cache
            );
        }
    }

    /**
     * @notice A view of the last checkpoint of account data (not as of this block)
     */
    function accountData(
        address account
    ) external view override returns (
        AccountData memory
    ) {
        return allAccountsData[account];
    }
    
    /**
     * @notice Configuration and latest data snapshot of the DAI debt token
     */
    function debtTokenDetails() external view returns (
        DebtTokenConfig memory,
        DebtTokenData memory
    ) {
        return (debtTokenConfig, debtTokenData);
    }

    /**
     * @notice A view of the derived/internal cache data.
     */
    function getDebtTokenCache() external view returns (DebtTokenCache memory) {
        return _debtTokenCacheRO();
    }

    /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/
    /*                          INTERNALS                         */
    /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/

    /**
     * @dev An internal struct used to track the latest storage data (and new updates)
     * for a given debt token.
     * This is setup once from storage, and then reads/writes are cheap.
     */
    struct DebtTokenCache {
        /**
         * @notice This debt token's configuration.
         */
        DebtTokenConfig config;

        /**
         * @notice The total amount that has already been borrowed by all accounts.
         * This increases as interest accrues or new borrows. 
         * Decreases on repays or liquidations.
         */
        uint128 totalDebt;

        /**
         * @notice The interest rate as of the last borrow/repay/liquidation.
         * This last rate is used to accrue interest from that last action time
         * until the current block.
         */
        uint96 interestRate;

        /**
         * @notice Internal tracking of the accumulated interest as an index starting from 1.0e27
         * When this accumulator is compunded by the interest rate, the total debt can be calculated as
         * `updatedTotalDebt = prevTotalDebt * latestInterestAccumulator / prevInterestAccumulator
         */
        uint256 interestAccumulator;

        /**
         * @dev The price of this token as of this block. 
         * No external price oracles - only dependant on TPI
         */
        uint256 price;
        
        /**
         * @notice The maximum amount that the TLC Strategy is allowed to borrow from the TRV
         * @dev This puts a ceiling on the total amount allowed to be borrowed
         * by users from TLC. This is used as the denominator in the Utilisation Ratio
         * (the interest rate calcs are dependant on the UR)
         */
        uint256 trvDebtCeiling;
    }
    
    /**
     * @dev Initialize the DebtTokenCache from storage to this block, for a given token.
     */
    function _initDebtTokenCache(DebtTokenCache memory _cache) private view returns (bool dirty) {

        // Copies from storage (once)
        _cache.config = debtTokenConfig;

        _cache.interestAccumulator = debtTokenData.interestAccumulator;
        _cache.totalDebt = debtTokenData.totalDebt;
        _cache.interestRate = debtTokenData.interestRate;

        // Set the debt ceiling and price.
        {
            ITreasuryReservesVault _trv = treasuryReservesVault;
            _cache.trvDebtCeiling = _trv.strategyDebtCeiling(address(tlcStrategy), daiToken);
            _cache.price = _trv.treasuryPriceIndex();
        }
        
        // Only compound if we're on a new block
        uint32 _timeElapsed;
        unchecked {
            _timeElapsed = uint32(block.timestamp) - debtTokenData.interestAccumulatorUpdatedAt;
        }

        if (_timeElapsed > 0) {
            dirty = true;

            // Compound the accumulator
            uint256 newInterestAccumulator = _cache.interestAccumulator.continuouslyCompounded(
                _timeElapsed,
                _cache.interestRate
            );

            // Calculate the latest totalDebt from this
            _cache.totalDebt = mulDiv(
                newInterestAccumulator,
                _cache.totalDebt,
                _cache.interestAccumulator
            ).encodeUInt128();
            _cache.interestAccumulator = newInterestAccumulator;
        }
    }

    /**
     * @dev Setup the DebtTokenCache for a given token
     * Update storage if and only if the timestamp has changed since last time.
     */
    function _debtTokenCache() internal returns (
        DebtTokenCache memory cache
    ) {
        if (_initDebtTokenCache(cache)) {
            debtTokenData.interestAccumulatorUpdatedAt = uint32(block.timestamp);
            debtTokenData.totalDebt = cache.totalDebt;
            debtTokenData.interestAccumulator = cache.interestAccumulator;
        }
    }

    /**
     * @dev Setup the DebtTokenCache for a given token
     * read only -- storage isn't updated.
     */
    function _debtTokenCacheRO() internal view returns (
        DebtTokenCache memory cache
    ) {
        _initDebtTokenCache(cache);
    }

    /**
     * @dev Calculate the borrow interest rate, given the utilization ratio of the token.
     * If the rate has changed, then update storage and emit an event.
     */
    function _updateInterestRates(
        DebtTokenCache memory _cache
    ) internal {
        uint96 newInterestRate = _cache.config.interestRateModel.calculateInterestRate(
            _utilizationRatio(_cache)
        );

        // Update storage if the new rate differs from the old rate.
        if (_cache.interestRate != newInterestRate) {
            emit InterestRateUpdate(newInterestRate);
            debtTokenData.interestRate = _cache.interestRate = newInterestRate;
        }
    }

    /**
     * @dev The implementation of the debt token repayment, used by repay() and repayAll()
     */
    function _repayToken(
        DebtTokenCache memory _cache,
        uint128 _repayAmount,
        address _fromAccount,
        address _onBehalfOf
    ) internal {
        _repayTotalDebt(_cache, _repayAmount);

        emit Repay(_fromAccount, _onBehalfOf, _repayAmount);
        // NB: Liquidity doesn't need to be checked after a repay, as that only improves the health.

        // Pull the stables, and repay the TRV debt on behalf of the strategy.
        {
            daiToken.safeTransferFrom(_fromAccount, address(this), _repayAmount);
            treasuryReservesVault.repay(daiToken, _repayAmount, address(tlcStrategy));
        }
    }

    /**
     * @dev Generate the LiquidationStatus struct with current details 
     * for this account.
     */
    function _computeLiquidity(
        AccountData storage _accountData,
        DebtTokenCache memory _cache
    ) internal view returns (LiquidationStatus memory status) {
        status.collateral = _accountData.collateral;

        status.currentDebt = _currentAccountDebt(
            _cache, 
            _accountData.debtCheckpoint, 
            _accountData.interestAccumulator,
            true // round up for user reported debt
        );

        status.collateralValue = status.collateral * _cache.price / PRECISION;

        status.hasExceededMaxLtv = status.currentDebt > _maxBorrowLimit(
            _cache,
            status.collateral
        );
    }

    /**
     * @dev Check if this account is to be liquidated given the current
     * account, debt token and market conditions.
     * Revert if the account has exceeded the maximum LTV
     */
    function _checkLiquidity(AccountData storage _accountData, DebtTokenCache memory _cache) internal view {
        LiquidationStatus memory _status = _computeLiquidity(
            _accountData,
            _cache
        );
        if (_status.hasExceededMaxLtv) {
            revert ExceededMaxLtv(_status.collateral, _status.collateralValue, _status.currentDebt);
        }
    }

    /**
     * @dev Reduce the total debt in storage by a repayment amount.
     * The sum each users debt may be slightly more than the recorded total debt
     * because users debt is rounded up for dust.
     * The Total debt is floored at 0.
     */
    function _repayTotalDebt(
        DebtTokenCache memory _cache,
        uint128 _repayAmount
    ) internal {
        if (_repayAmount == 0) return;

        unchecked {
            uint128 _newDebt = (_repayAmount > _cache.totalDebt)
                ? 0
                : _cache.totalDebt - _repayAmount;

            debtTokenData.totalDebt = _cache.totalDebt = _newDebt;
        }

        // Update interest rates now the total debt has been updated.
        _updateInterestRates(_cache);
    }

    /**
     * @dev Calculate the Utilization Ratio. 
     * It is only relevant for DAI, where there is a debt ceiling set in the cache.
     * Numerator = The total debt across all users for this token
     * Denominator = The max amount which TLC can borrow from the Treasury Reserves Vault
     */
    function _utilizationRatio(
        DebtTokenCache memory _cache
    ) internal pure returns (uint256) {
        return _cache.trvDebtCeiling == 0
            ? 0
            : mulDiv(_cache.totalDebt, PRECISION, _cache.trvDebtCeiling);
    }
    
    /**
     * @dev mulDiv with an option to round the result up or down to the nearest wei
     */
    function _mulDivRound(uint256 x, uint256 y, uint256 denominator, bool roundUp) internal pure returns (uint256 result) {
        result = mulDiv(x, y, denominator);
        // See OZ Math.sol for the equivalent mulDiv() with rounding.
        if (roundUp && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
    }

    /**
     * @dev Calculate the latest debt for a given account & token.
     * Derived from the prior debt checkpoint, and the interest accumulator.
     */
    function _currentAccountDebt(
        DebtTokenCache memory _cache,
        uint128 _accountDebtCheckpoint,
        uint256 _accountInterestAccumulator,
        bool roundUp
    ) internal pure returns (uint128 result) {
        return (_accountDebtCheckpoint == 0) 
            ? 0
            : _mulDivRound(
                _accountDebtCheckpoint, 
                _cache.interestAccumulator, 
                _accountInterestAccumulator, 
                roundUp
            ).encodeUInt128();
    }

    /**
     * @dev What is the max borrow liit for a given token and 
     * amount of collateral
     */
    function _maxBorrowLimit(
        DebtTokenCache memory _cache,
        uint128 _collateral
    ) internal pure returns (uint128) {
        return mulDiv(
            _collateral * _cache.price,
            _cache.config.maxLtvRatio,
            DOUBLE_PRECISION
        ).encodeUInt128();
    }

    /**
     * @dev What is the health factor, given an amount of 
     * collateral and debt.
     * health = (collateral value / debt value) * max LTV Limit
     */
    function _healthFactor(
        DebtTokenCache memory _cache,
        uint256 _collateral,
        uint256 _debt
    ) internal pure returns (uint256) {
        return _debt == 0
            ? type(uint256).max
            : mulDiv(
                _collateral * _cache.price,
                _cache.config.maxLtvRatio,
                _debt * PRECISION
            );
    }

    /**
     * @dev What is the Loan To Value (LTV), given an amount of 
     * collateral and debt.
     * LTV = debt value / collateral value
     */
    function _loanToValueRatio(
        DebtTokenCache memory _cache,
        uint256 _collateral,
        uint256 _debt
    ) internal pure returns (uint256) {
        return _collateral == 0
            ? type(uint256).max
            : mulDiv(
                _debt,
                DOUBLE_PRECISION,
                _collateral * _cache.price
            );
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";

/**
 * @dev Interface for the optional metadata functions from the ERC20 standard.
 *
 * _Available since v4.1._
 */
interface IERC20Metadata is IERC20 {
    /**
     * @dev Returns the name of the token.
     */
    function name() external view returns (string memory);

    /**
     * @dev Returns the symbol of the token.
     */
    function symbol() external view returns (string memory);

    /**
     * @dev Returns the decimals places of the token.
     */
    function decimals() external view returns (uint8);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the amount of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

    /**
     * @dev Returns the amount of tokens owned by `account`.
     */
    function balanceOf(address account) external view returns (uint256);

    /**
     * @dev Moves `amount` tokens from the caller's account to `to`.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transfer(address to, uint256 amount) external returns (bool);

    /**
     * @dev Returns the remaining number of tokens that `spender` will be
     * allowed to spend on behalf of `owner` through {transferFrom}. This is
     * zero by default.
     *
     * This value changes when {approve} or {transferFrom} are called.
     */
    function allowance(address owner, address spender) external view returns (uint256);

    /**
     * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * IMPORTANT: Beware that changing an allowance with this method brings the risk
     * that someone may use both the old and the new allowance by unfortunate
     * transaction ordering. One possible solution to mitigate this race
     * condition is to first reduce the spender's allowance to 0 and set the
     * desired value afterwards:
     * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
     *
     * Emits an {Approval} event.
     */
    function approve(address spender, uint256 amount) external returns (bool);

    /**
     * @dev Moves `amount` tokens from `from` to `to` using the
     * allowance mechanism. `amount` is then deducted from the caller's
     * allowance.
     *
     * Returns a boolean value indicating whether the operation succeeded.
     *
     * Emits a {Transfer} event.
     */
    function transferFrom(address from, address to, uint256 amount) external returns (bool);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

// Common.sol
//
// Common mathematical functions needed by both SD59x18 and UD60x18. Note that these global functions do not
// always operate with SD59x18 and UD60x18 numbers.

/*//////////////////////////////////////////////////////////////////////////
                                CUSTOM ERRORS
//////////////////////////////////////////////////////////////////////////*/

/// @notice Thrown when the resultant value in {mulDiv} overflows uint256.
error PRBMath_MulDiv_Overflow(uint256 x, uint256 y, uint256 denominator);

/// @notice Thrown when the resultant value in {mulDiv18} overflows uint256.
error PRBMath_MulDiv18_Overflow(uint256 x, uint256 y);

/// @notice Thrown when one of the inputs passed to {mulDivSigned} is `type(int256).min`.
error PRBMath_MulDivSigned_InputTooSmall();

/// @notice Thrown when the resultant value in {mulDivSigned} overflows int256.
error PRBMath_MulDivSigned_Overflow(int256 x, int256 y);

/*//////////////////////////////////////////////////////////////////////////
                                    CONSTANTS
//////////////////////////////////////////////////////////////////////////*/

/// @dev The maximum value a uint128 number can have.
uint128 constant MAX_UINT128 = type(uint128).max;

/// @dev The maximum value a uint40 number can have.
uint40 constant MAX_UINT40 = type(uint40).max;

/// @dev The unit number, which the decimal precision of the fixed-point types.
uint256 constant UNIT = 1e18;

/// @dev The unit number inverted mod 2^256.
uint256 constant UNIT_INVERSE = 78156646155174841979727994598816262306175212592076161876661_508869554232690281;

/// @dev The the largest power of two that divides the decimal value of `UNIT`. The logarithm of this value is the least significant
/// bit in the binary representation of `UNIT`.
uint256 constant UNIT_LPOTD = 262144;

/*//////////////////////////////////////////////////////////////////////////
                                    FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

/// @notice Calculates the binary exponent of x using the binary fraction method.
/// @dev Has to use 192.64-bit fixed-point numbers. See https://ethereum.stackexchange.com/a/96594/24693.
/// @param x The exponent as an unsigned 192.64-bit fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
/// @custom:smtchecker abstract-function-nondet
function exp2(uint256 x) pure returns (uint256 result) {
    unchecked {
        // Start from 0.5 in the 192.64-bit fixed-point format.
        result = 0x800000000000000000000000000000000000000000000000;

        // The following logic multiplies the result by $\sqrt{2^{-i}}$ when the bit at position i is 1. Key points:
        //
        // 1. Intermediate results will not overflow, as the starting point is 2^191 and all magic factors are under 2^65.
        // 2. The rationale for organizing the if statements into groups of 8 is gas savings. If the result of performing
        // a bitwise AND operation between x and any value in the array [0x80; 0x40; 0x20; 0x10; 0x08; 0x04; 0x02; 0x01] is 1,
        // we know that `x & 0xFF` is also 1.
        if (x & 0xFF00000000000000 > 0) {
            if (x & 0x8000000000000000 > 0) {
                result = (result * 0x16A09E667F3BCC909) >> 64;
            }
            if (x & 0x4000000000000000 > 0) {
                result = (result * 0x1306FE0A31B7152DF) >> 64;
            }
            if (x & 0x2000000000000000 > 0) {
                result = (result * 0x1172B83C7D517ADCE) >> 64;
            }
            if (x & 0x1000000000000000 > 0) {
                result = (result * 0x10B5586CF9890F62A) >> 64;
            }
            if (x & 0x800000000000000 > 0) {
                result = (result * 0x1059B0D31585743AE) >> 64;
            }
            if (x & 0x400000000000000 > 0) {
                result = (result * 0x102C9A3E778060EE7) >> 64;
            }
            if (x & 0x200000000000000 > 0) {
                result = (result * 0x10163DA9FB33356D8) >> 64;
            }
            if (x & 0x100000000000000 > 0) {
                result = (result * 0x100B1AFA5ABCBED61) >> 64;
            }
        }

        if (x & 0xFF000000000000 > 0) {
            if (x & 0x80000000000000 > 0) {
                result = (result * 0x10058C86DA1C09EA2) >> 64;
            }
            if (x & 0x40000000000000 > 0) {
                result = (result * 0x1002C605E2E8CEC50) >> 64;
            }
            if (x & 0x20000000000000 > 0) {
                result = (result * 0x100162F3904051FA1) >> 64;
            }
            if (x & 0x10000000000000 > 0) {
                result = (result * 0x1000B175EFFDC76BA) >> 64;
            }
            if (x & 0x8000000000000 > 0) {
                result = (result * 0x100058BA01FB9F96D) >> 64;
            }
            if (x & 0x4000000000000 > 0) {
                result = (result * 0x10002C5CC37DA9492) >> 64;
            }
            if (x & 0x2000000000000 > 0) {
                result = (result * 0x1000162E525EE0547) >> 64;
            }
            if (x & 0x1000000000000 > 0) {
                result = (result * 0x10000B17255775C04) >> 64;
            }
        }

        if (x & 0xFF0000000000 > 0) {
            if (x & 0x800000000000 > 0) {
                result = (result * 0x1000058B91B5BC9AE) >> 64;
            }
            if (x & 0x400000000000 > 0) {
                result = (result * 0x100002C5C89D5EC6D) >> 64;
            }
            if (x & 0x200000000000 > 0) {
                result = (result * 0x10000162E43F4F831) >> 64;
            }
            if (x & 0x100000000000 > 0) {
                result = (result * 0x100000B1721BCFC9A) >> 64;
            }
            if (x & 0x80000000000 > 0) {
                result = (result * 0x10000058B90CF1E6E) >> 64;
            }
            if (x & 0x40000000000 > 0) {
                result = (result * 0x1000002C5C863B73F) >> 64;
            }
            if (x & 0x20000000000 > 0) {
                result = (result * 0x100000162E430E5A2) >> 64;
            }
            if (x & 0x10000000000 > 0) {
                result = (result * 0x1000000B172183551) >> 64;
            }
        }

        if (x & 0xFF00000000 > 0) {
            if (x & 0x8000000000 > 0) {
                result = (result * 0x100000058B90C0B49) >> 64;
            }
            if (x & 0x4000000000 > 0) {
                result = (result * 0x10000002C5C8601CC) >> 64;
            }
            if (x & 0x2000000000 > 0) {
                result = (result * 0x1000000162E42FFF0) >> 64;
            }
            if (x & 0x1000000000 > 0) {
                result = (result * 0x10000000B17217FBB) >> 64;
            }
            if (x & 0x800000000 > 0) {
                result = (result * 0x1000000058B90BFCE) >> 64;
            }
            if (x & 0x400000000 > 0) {
                result = (result * 0x100000002C5C85FE3) >> 64;
            }
            if (x & 0x200000000 > 0) {
                result = (result * 0x10000000162E42FF1) >> 64;
            }
            if (x & 0x100000000 > 0) {
                result = (result * 0x100000000B17217F8) >> 64;
            }
        }

        if (x & 0xFF000000 > 0) {
            if (x & 0x80000000 > 0) {
                result = (result * 0x10000000058B90BFC) >> 64;
            }
            if (x & 0x40000000 > 0) {
                result = (result * 0x1000000002C5C85FE) >> 64;
            }
            if (x & 0x20000000 > 0) {
                result = (result * 0x100000000162E42FF) >> 64;
            }
            if (x & 0x10000000 > 0) {
                result = (result * 0x1000000000B17217F) >> 64;
            }
            if (x & 0x8000000 > 0) {
                result = (result * 0x100000000058B90C0) >> 64;
            }
            if (x & 0x4000000 > 0) {
                result = (result * 0x10000000002C5C860) >> 64;
            }
            if (x & 0x2000000 > 0) {
                result = (result * 0x1000000000162E430) >> 64;
            }
            if (x & 0x1000000 > 0) {
                result = (result * 0x10000000000B17218) >> 64;
            }
        }

        if (x & 0xFF0000 > 0) {
            if (x & 0x800000 > 0) {
                result = (result * 0x1000000000058B90C) >> 64;
            }
            if (x & 0x400000 > 0) {
                result = (result * 0x100000000002C5C86) >> 64;
            }
            if (x & 0x200000 > 0) {
                result = (result * 0x10000000000162E43) >> 64;
            }
            if (x & 0x100000 > 0) {
                result = (result * 0x100000000000B1721) >> 64;
            }
            if (x & 0x80000 > 0) {
                result = (result * 0x10000000000058B91) >> 64;
            }
            if (x & 0x40000 > 0) {
                result = (result * 0x1000000000002C5C8) >> 64;
            }
            if (x & 0x20000 > 0) {
                result = (result * 0x100000000000162E4) >> 64;
            }
            if (x & 0x10000 > 0) {
                result = (result * 0x1000000000000B172) >> 64;
            }
        }

        if (x & 0xFF00 > 0) {
            if (x & 0x8000 > 0) {
                result = (result * 0x100000000000058B9) >> 64;
            }
            if (x & 0x4000 > 0) {
                result = (result * 0x10000000000002C5D) >> 64;
            }
            if (x & 0x2000 > 0) {
                result = (result * 0x1000000000000162E) >> 64;
            }
            if (x & 0x1000 > 0) {
                result = (result * 0x10000000000000B17) >> 64;
            }
            if (x & 0x800 > 0) {
                result = (result * 0x1000000000000058C) >> 64;
            }
            if (x & 0x400 > 0) {
                result = (result * 0x100000000000002C6) >> 64;
            }
            if (x & 0x200 > 0) {
                result = (result * 0x10000000000000163) >> 64;
            }
            if (x & 0x100 > 0) {
                result = (result * 0x100000000000000B1) >> 64;
            }
        }

        if (x & 0xFF > 0) {
            if (x & 0x80 > 0) {
                result = (result * 0x10000000000000059) >> 64;
            }
            if (x & 0x40 > 0) {
                result = (result * 0x1000000000000002C) >> 64;
            }
            if (x & 0x20 > 0) {
                result = (result * 0x10000000000000016) >> 64;
            }
            if (x & 0x10 > 0) {
                result = (result * 0x1000000000000000B) >> 64;
            }
            if (x & 0x8 > 0) {
                result = (result * 0x10000000000000006) >> 64;
            }
            if (x & 0x4 > 0) {
                result = (result * 0x10000000000000003) >> 64;
            }
            if (x & 0x2 > 0) {
                result = (result * 0x10000000000000001) >> 64;
            }
            if (x & 0x1 > 0) {
                result = (result * 0x10000000000000001) >> 64;
            }
        }

        // In the code snippet below, two operations are executed simultaneously:
        //
        // 1. The result is multiplied by $(2^n + 1)$, where $2^n$ represents the integer part, and the additional 1
        // accounts for the initial guess of 0.5. This is achieved by subtracting from 191 instead of 192.
        // 2. The result is then converted to an unsigned 60.18-decimal fixed-point format.
        //
        // The underlying logic is based on the relationship $2^{191-ip} = 2^{ip} / 2^{191}$, where $ip$ denotes the,
        // integer part, $2^n$.
        result *= UNIT;
        result >>= (191 - (x >> 64));
    }
}

/// @notice Finds the zero-based index of the first 1 in the binary representation of x.
///
/// @dev See the note on "msb" in this Wikipedia article: https://en.wikipedia.org/wiki/Find_first_set
///
/// Each step in this implementation is equivalent to this high-level code:
///
/// ```solidity
/// if (x >= 2 ** 128) {
///     x >>= 128;
///     result += 128;
/// }
/// ```
///
/// Where 128 is replaced with each respective power of two factor. See the full high-level implementation here:
/// https://gist.github.com/PaulRBerg/f932f8693f2733e30c4d479e8e980948
///
/// The Yul instructions used below are:
///
/// - "gt" is "greater than"
/// - "or" is the OR bitwise operator
/// - "shl" is "shift left"
/// - "shr" is "shift right"
///
/// @param x The uint256 number for which to find the index of the most significant bit.
/// @return result The index of the most significant bit as a uint256.
/// @custom:smtchecker abstract-function-nondet
function msb(uint256 x) pure returns (uint256 result) {
    // 2^128
    assembly ("memory-safe") {
        let factor := shl(7, gt(x, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF))
        x := shr(factor, x)
        result := or(result, factor)
    }
    // 2^64
    assembly ("memory-safe") {
        let factor := shl(6, gt(x, 0xFFFFFFFFFFFFFFFF))
        x := shr(factor, x)
        result := or(result, factor)
    }
    // 2^32
    assembly ("memory-safe") {
        let factor := shl(5, gt(x, 0xFFFFFFFF))
        x := shr(factor, x)
        result := or(result, factor)
    }
    // 2^16
    assembly ("memory-safe") {
        let factor := shl(4, gt(x, 0xFFFF))
        x := shr(factor, x)
        result := or(result, factor)
    }
    // 2^8
    assembly ("memory-safe") {
        let factor := shl(3, gt(x, 0xFF))
        x := shr(factor, x)
        result := or(result, factor)
    }
    // 2^4
    assembly ("memory-safe") {
        let factor := shl(2, gt(x, 0xF))
        x := shr(factor, x)
        result := or(result, factor)
    }
    // 2^2
    assembly ("memory-safe") {
        let factor := shl(1, gt(x, 0x3))
        x := shr(factor, x)
        result := or(result, factor)
    }
    // 2^1
    // No need to shift x any more.
    assembly ("memory-safe") {
        let factor := gt(x, 0x1)
        result := or(result, factor)
    }
}

/// @notice Calculates x*y÷denominator with 512-bit precision.
///
/// @dev Credits to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv.
///
/// Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - The denominator must not be zero.
/// - The result must fit in uint256.
///
/// @param x The multiplicand as a uint256.
/// @param y The multiplier as a uint256.
/// @param denominator The divisor as a uint256.
/// @return result The result as a uint256.
/// @custom:smtchecker abstract-function-nondet
function mulDiv(uint256 x, uint256 y, uint256 denominator) pure returns (uint256 result) {
    // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
    // use the Chinese Remainder Theorem to reconstruct the 512-bit result. The result is stored in two 256
    // variables such that product = prod1 * 2^256 + prod0.
    uint256 prod0; // Least significant 256 bits of the product
    uint256 prod1; // Most significant 256 bits of the product
    assembly ("memory-safe") {
        let mm := mulmod(x, y, not(0))
        prod0 := mul(x, y)
        prod1 := sub(sub(mm, prod0), lt(mm, prod0))
    }

    // Handle non-overflow cases, 256 by 256 division.
    if (prod1 == 0) {
        unchecked {
            return prod0 / denominator;
        }
    }

    // Make sure the result is less than 2^256. Also prevents denominator == 0.
    if (prod1 >= denominator) {
        revert PRBMath_MulDiv_Overflow(x, y, denominator);
    }

    ////////////////////////////////////////////////////////////////////////////
    // 512 by 256 division
    ////////////////////////////////////////////////////////////////////////////

    // Make division exact by subtracting the remainder from [prod1 prod0].
    uint256 remainder;
    assembly ("memory-safe") {
        // Compute remainder using the mulmod Yul instruction.
        remainder := mulmod(x, y, denominator)

        // Subtract 256 bit number from 512-bit number.
        prod1 := sub(prod1, gt(remainder, prod0))
        prod0 := sub(prod0, remainder)
    }

    unchecked {
        // Calculate the largest power of two divisor of the denominator using the unary operator ~. This operation cannot overflow
        // because the denominator cannot be zero at this point in the function execution. The result is always >= 1.
        // For more detail, see https://cs.stackexchange.com/q/138556/92363.
        uint256 lpotdod = denominator & (~denominator + 1);
        uint256 flippedLpotdod;

        assembly ("memory-safe") {
            // Factor powers of two out of denominator.
            denominator := div(denominator, lpotdod)

            // Divide [prod1 prod0] by lpotdod.
            prod0 := div(prod0, lpotdod)

            // Get the flipped value `2^256 / lpotdod`. If the `lpotdod` is zero, the flipped value is one.
            // `sub(0, lpotdod)` produces the two's complement version of `lpotdod`, which is equivalent to flipping all the bits.
            // However, `div` interprets this value as an unsigned value: https://ethereum.stackexchange.com/q/147168/24693
            flippedLpotdod := add(div(sub(0, lpotdod), lpotdod), 1)
        }

        // Shift in bits from prod1 into prod0.
        prod0 |= prod1 * flippedLpotdod;

        // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
        // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
        // four bits. That is, denominator * inv = 1 mod 2^4.
        uint256 inverse = (3 * denominator) ^ 2;

        // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
        // in modular arithmetic, doubling the correct bits in each step.
        inverse *= 2 - denominator * inverse; // inverse mod 2^8
        inverse *= 2 - denominator * inverse; // inverse mod 2^16
        inverse *= 2 - denominator * inverse; // inverse mod 2^32
        inverse *= 2 - denominator * inverse; // inverse mod 2^64
        inverse *= 2 - denominator * inverse; // inverse mod 2^128
        inverse *= 2 - denominator * inverse; // inverse mod 2^256

        // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
        // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
        // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
        // is no longer required.
        result = prod0 * inverse;
    }
}

/// @notice Calculates x*y÷1e18 with 512-bit precision.
///
/// @dev A variant of {mulDiv} with constant folding, i.e. in which the denominator is hard coded to 1e18.
///
/// Notes:
/// - The body is purposely left uncommented; to understand how this works, see the documentation in {mulDiv}.
/// - The result is rounded toward zero.
/// - We take as an axiom that the result cannot be `MAX_UINT256` when x and y solve the following system of equations:
///
/// $$
/// \begin{cases}
///     x * y = MAX\_UINT256 * UNIT \\
///     (x * y) \% UNIT \geq \frac{UNIT}{2}
/// \end{cases}
/// $$
///
/// Requirements:
/// - Refer to the requirements in {mulDiv}.
/// - The result must fit in uint256.
///
/// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number.
/// @param y The multiplier as an unsigned 60.18-decimal fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
/// @custom:smtchecker abstract-function-nondet
function mulDiv18(uint256 x, uint256 y) pure returns (uint256 result) {
    uint256 prod0;
    uint256 prod1;
    assembly ("memory-safe") {
        let mm := mulmod(x, y, not(0))
        prod0 := mul(x, y)
        prod1 := sub(sub(mm, prod0), lt(mm, prod0))
    }

    if (prod1 == 0) {
        unchecked {
            return prod0 / UNIT;
        }
    }

    if (prod1 >= UNIT) {
        revert PRBMath_MulDiv18_Overflow(x, y);
    }

    uint256 remainder;
    assembly ("memory-safe") {
        remainder := mulmod(x, y, UNIT)
        result :=
            mul(
                or(
                    div(sub(prod0, remainder), UNIT_LPOTD),
                    mul(sub(prod1, gt(remainder, prod0)), add(div(sub(0, UNIT_LPOTD), UNIT_LPOTD), 1))
                ),
                UNIT_INVERSE
            )
    }
}

/// @notice Calculates x*y÷denominator with 512-bit precision.
///
/// @dev This is an extension of {mulDiv} for signed numbers, which works by computing the signs and the absolute values separately.
///
/// Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - Refer to the requirements in {mulDiv}.
/// - None of the inputs can be `type(int256).min`.
/// - The result must fit in int256.
///
/// @param x The multiplicand as an int256.
/// @param y The multiplier as an int256.
/// @param denominator The divisor as an int256.
/// @return result The result as an int256.
/// @custom:smtchecker abstract-function-nondet
function mulDivSigned(int256 x, int256 y, int256 denominator) pure returns (int256 result) {
    if (x == type(int256).min || y == type(int256).min || denominator == type(int256).min) {
        revert PRBMath_MulDivSigned_InputTooSmall();
    }

    // Get hold of the absolute values of x, y and the denominator.
    uint256 xAbs;
    uint256 yAbs;
    uint256 dAbs;
    unchecked {
        xAbs = x < 0 ? uint256(-x) : uint256(x);
        yAbs = y < 0 ? uint256(-y) : uint256(y);
        dAbs = denominator < 0 ? uint256(-denominator) : uint256(denominator);
    }

    // Compute the absolute value of x*y÷denominator. The result must fit in int256.
    uint256 resultAbs = mulDiv(xAbs, yAbs, dAbs);
    if (resultAbs > uint256(type(int256).max)) {
        revert PRBMath_MulDivSigned_Overflow(x, y);
    }

    // Get the signs of x, y and the denominator.
    uint256 sx;
    uint256 sy;
    uint256 sd;
    assembly ("memory-safe") {
        // "sgt" is the "signed greater than" assembly instruction and "sub(0,1)" is -1 in two's complement.
        sx := sgt(x, sub(0, 1))
        sy := sgt(y, sub(0, 1))
        sd := sgt(denominator, sub(0, 1))
    }

    // XOR over sx, sy and sd. What this does is to check whether there are 1 or 3 negative signs in the inputs.
    // If there are, the result should be negative. Otherwise, it should be positive.
    unchecked {
        result = sx ^ sy ^ sd == 0 ? -int256(resultAbs) : int256(resultAbs);
    }
}

/// @notice Calculates the square root of x using the Babylonian method.
///
/// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Notes:
/// - If x is not a perfect square, the result is rounded down.
/// - Credits to OpenZeppelin for the explanations in comments below.
///
/// @param x The uint256 number for which to calculate the square root.
/// @return result The result as a uint256.
/// @custom:smtchecker abstract-function-nondet
function sqrt(uint256 x) pure returns (uint256 result) {
    if (x == 0) {
        return 0;
    }

    // For our first guess, we calculate the biggest power of 2 which is smaller than the square root of x.
    //
    // We know that the "msb" (most significant bit) of x is a power of 2 such that we have:
    //
    // $$
    // msb(x) <= x <= 2*msb(x)$
    // $$
    //
    // We write $msb(x)$ as $2^k$, and we get:
    //
    // $$
    // k = log_2(x)
    // $$
    //
    // Thus, we can write the initial inequality as:
    //
    // $$
    // 2^{log_2(x)} <= x <= 2*2^{log_2(x)+1} \\
    // sqrt(2^k) <= sqrt(x) < sqrt(2^{k+1}) \\
    // 2^{k/2} <= sqrt(x) < 2^{(k+1)/2} <= 2^{(k/2)+1}
    // $$
    //
    // Consequently, $2^{log_2(x) /2} is a good first approximation of sqrt(x) with at least one correct bit.
    uint256 xAux = uint256(x);
    result = 1;
    if (xAux >= 2 ** 128) {
        xAux >>= 128;
        result <<= 64;
    }
    if (xAux >= 2 ** 64) {
        xAux >>= 64;
        result <<= 32;
    }
    if (xAux >= 2 ** 32) {
        xAux >>= 32;
        result <<= 16;
    }
    if (xAux >= 2 ** 16) {
        xAux >>= 16;
        result <<= 8;
    }
    if (xAux >= 2 ** 8) {
        xAux >>= 8;
        result <<= 4;
    }
    if (xAux >= 2 ** 4) {
        xAux >>= 4;
        result <<= 2;
    }
    if (xAux >= 2 ** 2) {
        result <<= 1;
    }

    // At this point, `result` is an estimation with at least one bit of precision. We know the true value has at
    // most 128 bits, since it is the square root of a uint256. Newton's method converges quadratically (precision
    // doubles at every iteration). We thus need at most 7 iteration to turn our partial result with one bit of
    // precision into the expected uint128 result.
    unchecked {
        result = (result + x / result) >> 1;
        result = (result + x / result) >> 1;
        result = (result + x / result) >> 1;
        result = (result + x / result) >> 1;
        result = (result + x / result) >> 1;
        result = (result + x / result) >> 1;
        result = (result + x / result) >> 1;

        // If x is not a perfect square, round the result toward zero.
        uint256 roundedResult = x / result;
        if (result >= roundedResult) {
            result = roundedResult;
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "../Common.sol" as Common;
import "./Errors.sol" as CastingErrors;
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { SD1x18 } from "./ValueType.sol";

/// @notice Casts an SD1x18 number into SD59x18.
/// @dev There is no overflow check because the domain of SD1x18 is a subset of SD59x18.
function intoSD59x18(SD1x18 x) pure returns (SD59x18 result) {
    result = SD59x18.wrap(int256(SD1x18.unwrap(x)));
}

/// @notice Casts an SD1x18 number into UD2x18.
/// - x must be positive.
function intoUD2x18(SD1x18 x) pure returns (UD2x18 result) {
    int64 xInt = SD1x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD1x18_ToUD2x18_Underflow(x);
    }
    result = UD2x18.wrap(uint64(xInt));
}

/// @notice Casts an SD1x18 number into UD60x18.
/// @dev Requirements:
/// - x must be positive.
function intoUD60x18(SD1x18 x) pure returns (UD60x18 result) {
    int64 xInt = SD1x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD1x18_ToUD60x18_Underflow(x);
    }
    result = UD60x18.wrap(uint64(xInt));
}

/// @notice Casts an SD1x18 number into uint256.
/// @dev Requirements:
/// - x must be positive.
function intoUint256(SD1x18 x) pure returns (uint256 result) {
    int64 xInt = SD1x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD1x18_ToUint256_Underflow(x);
    }
    result = uint256(uint64(xInt));
}

/// @notice Casts an SD1x18 number into uint128.
/// @dev Requirements:
/// - x must be positive.
function intoUint128(SD1x18 x) pure returns (uint128 result) {
    int64 xInt = SD1x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD1x18_ToUint128_Underflow(x);
    }
    result = uint128(uint64(xInt));
}

/// @notice Casts an SD1x18 number into uint40.
/// @dev Requirements:
/// - x must be positive.
/// - x must be less than or equal to `MAX_UINT40`.
function intoUint40(SD1x18 x) pure returns (uint40 result) {
    int64 xInt = SD1x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD1x18_ToUint40_Underflow(x);
    }
    if (xInt > int64(uint64(Common.MAX_UINT40))) {
        revert CastingErrors.PRBMath_SD1x18_ToUint40_Overflow(x);
    }
    result = uint40(uint64(xInt));
}

/// @notice Alias for {wrap}.
function sd1x18(int64 x) pure returns (SD1x18 result) {
    result = SD1x18.wrap(x);
}

/// @notice Unwraps an SD1x18 number into int64.
function unwrap(SD1x18 x) pure returns (int64 result) {
    result = SD1x18.unwrap(x);
}

/// @notice Wraps an int64 number into SD1x18.
function wrap(int64 x) pure returns (SD1x18 result) {
    result = SD1x18.wrap(x);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { SD1x18 } from "./ValueType.sol";

/// @dev Euler's number as an SD1x18 number.
SD1x18 constant E = SD1x18.wrap(2_718281828459045235);

/// @dev The maximum value an SD1x18 number can have.
int64 constant uMAX_SD1x18 = 9_223372036854775807;
SD1x18 constant MAX_SD1x18 = SD1x18.wrap(uMAX_SD1x18);

/// @dev The maximum value an SD1x18 number can have.
int64 constant uMIN_SD1x18 = -9_223372036854775808;
SD1x18 constant MIN_SD1x18 = SD1x18.wrap(uMIN_SD1x18);

/// @dev PI as an SD1x18 number.
SD1x18 constant PI = SD1x18.wrap(3_141592653589793238);

/// @dev The unit number, which gives the decimal precision of SD1x18.
SD1x18 constant UNIT = SD1x18.wrap(1e18);
int256 constant uUNIT = 1e18;

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { SD1x18 } from "./ValueType.sol";

/// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in UD2x18.
error PRBMath_SD1x18_ToUD2x18_Underflow(SD1x18 x);

/// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in UD60x18.
error PRBMath_SD1x18_ToUD60x18_Underflow(SD1x18 x);

/// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint128.
error PRBMath_SD1x18_ToUint128_Underflow(SD1x18 x);

/// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint256.
error PRBMath_SD1x18_ToUint256_Underflow(SD1x18 x);

/// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint40.
error PRBMath_SD1x18_ToUint40_Overflow(SD1x18 x);

/// @notice Thrown when trying to cast a SD1x18 number that doesn't fit in uint40.
error PRBMath_SD1x18_ToUint40_Underflow(SD1x18 x);

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "./Casting.sol" as Casting;

/// @notice The signed 1.18-decimal fixed-point number representation, which can have up to 1 digit and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type int64. This is useful when end users want to use int64 to save gas, e.g. with tight variable packing in contract
/// storage.
type SD1x18 is int64;

/*//////////////////////////////////////////////////////////////////////////
                                    CASTING
//////////////////////////////////////////////////////////////////////////*/

using {
    Casting.intoSD59x18,
    Casting.intoUD2x18,
    Casting.intoUD60x18,
    Casting.intoUint256,
    Casting.intoUint128,
    Casting.intoUint40,
    Casting.unwrap
} for SD1x18 global;

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "./Errors.sol" as CastingErrors;
import { MAX_UINT128, MAX_UINT40 } from "../Common.sol";
import { uMAX_SD1x18, uMIN_SD1x18 } from "../sd1x18/Constants.sol";
import { SD1x18 } from "../sd1x18/ValueType.sol";
import { uMAX_UD2x18 } from "../ud2x18/Constants.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { SD59x18 } from "./ValueType.sol";

/// @notice Casts an SD59x18 number into int256.
/// @dev This is basically a functional alias for {unwrap}.
function intoInt256(SD59x18 x) pure returns (int256 result) {
    result = SD59x18.unwrap(x);
}

/// @notice Casts an SD59x18 number into SD1x18.
/// @dev Requirements:
/// - x must be greater than or equal to `uMIN_SD1x18`.
/// - x must be less than or equal to `uMAX_SD1x18`.
function intoSD1x18(SD59x18 x) pure returns (SD1x18 result) {
    int256 xInt = SD59x18.unwrap(x);
    if (xInt < uMIN_SD1x18) {
        revert CastingErrors.PRBMath_SD59x18_IntoSD1x18_Underflow(x);
    }
    if (xInt > uMAX_SD1x18) {
        revert CastingErrors.PRBMath_SD59x18_IntoSD1x18_Overflow(x);
    }
    result = SD1x18.wrap(int64(xInt));
}

/// @notice Casts an SD59x18 number into UD2x18.
/// @dev Requirements:
/// - x must be positive.
/// - x must be less than or equal to `uMAX_UD2x18`.
function intoUD2x18(SD59x18 x) pure returns (UD2x18 result) {
    int256 xInt = SD59x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD59x18_IntoUD2x18_Underflow(x);
    }
    if (xInt > int256(uint256(uMAX_UD2x18))) {
        revert CastingErrors.PRBMath_SD59x18_IntoUD2x18_Overflow(x);
    }
    result = UD2x18.wrap(uint64(uint256(xInt)));
}

/// @notice Casts an SD59x18 number into UD60x18.
/// @dev Requirements:
/// - x must be positive.
function intoUD60x18(SD59x18 x) pure returns (UD60x18 result) {
    int256 xInt = SD59x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD59x18_IntoUD60x18_Underflow(x);
    }
    result = UD60x18.wrap(uint256(xInt));
}

/// @notice Casts an SD59x18 number into uint256.
/// @dev Requirements:
/// - x must be positive.
function intoUint256(SD59x18 x) pure returns (uint256 result) {
    int256 xInt = SD59x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD59x18_IntoUint256_Underflow(x);
    }
    result = uint256(xInt);
}

/// @notice Casts an SD59x18 number into uint128.
/// @dev Requirements:
/// - x must be positive.
/// - x must be less than or equal to `uMAX_UINT128`.
function intoUint128(SD59x18 x) pure returns (uint128 result) {
    int256 xInt = SD59x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD59x18_IntoUint128_Underflow(x);
    }
    if (xInt > int256(uint256(MAX_UINT128))) {
        revert CastingErrors.PRBMath_SD59x18_IntoUint128_Overflow(x);
    }
    result = uint128(uint256(xInt));
}

/// @notice Casts an SD59x18 number into uint40.
/// @dev Requirements:
/// - x must be positive.
/// - x must be less than or equal to `MAX_UINT40`.
function intoUint40(SD59x18 x) pure returns (uint40 result) {
    int256 xInt = SD59x18.unwrap(x);
    if (xInt < 0) {
        revert CastingErrors.PRBMath_SD59x18_IntoUint40_Underflow(x);
    }
    if (xInt > int256(uint256(MAX_UINT40))) {
        revert CastingErrors.PRBMath_SD59x18_IntoUint40_Overflow(x);
    }
    result = uint40(uint256(xInt));
}

/// @notice Alias for {wrap}.
function sd(int256 x) pure returns (SD59x18 result) {
    result = SD59x18.wrap(x);
}

/// @notice Alias for {wrap}.
function sd59x18(int256 x) pure returns (SD59x18 result) {
    result = SD59x18.wrap(x);
}

/// @notice Unwraps an SD59x18 number into int256.
function unwrap(SD59x18 x) pure returns (int256 result) {
    result = SD59x18.unwrap(x);
}

/// @notice Wraps an int256 number into SD59x18.
function wrap(int256 x) pure returns (SD59x18 result) {
    result = SD59x18.wrap(x);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { SD59x18 } from "./ValueType.sol";

// NOTICE: the "u" prefix stands for "unwrapped".

/// @dev Euler's number as an SD59x18 number.
SD59x18 constant E = SD59x18.wrap(2_718281828459045235);

/// @dev The maximum input permitted in {exp}.
int256 constant uEXP_MAX_INPUT = 133_084258667509499440;
SD59x18 constant EXP_MAX_INPUT = SD59x18.wrap(uEXP_MAX_INPUT);

/// @dev The maximum input permitted in {exp2}.
int256 constant uEXP2_MAX_INPUT = 192e18 - 1;
SD59x18 constant EXP2_MAX_INPUT = SD59x18.wrap(uEXP2_MAX_INPUT);

/// @dev Half the UNIT number.
int256 constant uHALF_UNIT = 0.5e18;
SD59x18 constant HALF_UNIT = SD59x18.wrap(uHALF_UNIT);

/// @dev $log_2(10)$ as an SD59x18 number.
int256 constant uLOG2_10 = 3_321928094887362347;
SD59x18 constant LOG2_10 = SD59x18.wrap(uLOG2_10);

/// @dev $log_2(e)$ as an SD59x18 number.
int256 constant uLOG2_E = 1_442695040888963407;
SD59x18 constant LOG2_E = SD59x18.wrap(uLOG2_E);

/// @dev The maximum value an SD59x18 number can have.
int256 constant uMAX_SD59x18 = 57896044618658097711785492504343953926634992332820282019728_792003956564819967;
SD59x18 constant MAX_SD59x18 = SD59x18.wrap(uMAX_SD59x18);

/// @dev The maximum whole value an SD59x18 number can have.
int256 constant uMAX_WHOLE_SD59x18 = 57896044618658097711785492504343953926634992332820282019728_000000000000000000;
SD59x18 constant MAX_WHOLE_SD59x18 = SD59x18.wrap(uMAX_WHOLE_SD59x18);

/// @dev The minimum value an SD59x18 number can have.
int256 constant uMIN_SD59x18 = -57896044618658097711785492504343953926634992332820282019728_792003956564819968;
SD59x18 constant MIN_SD59x18 = SD59x18.wrap(uMIN_SD59x18);

/// @dev The minimum whole value an SD59x18 number can have.
int256 constant uMIN_WHOLE_SD59x18 = -57896044618658097711785492504343953926634992332820282019728_000000000000000000;
SD59x18 constant MIN_WHOLE_SD59x18 = SD59x18.wrap(uMIN_WHOLE_SD59x18);

/// @dev PI as an SD59x18 number.
SD59x18 constant PI = SD59x18.wrap(3_141592653589793238);

/// @dev The unit number, which gives the decimal precision of SD59x18.
int256 constant uUNIT = 1e18;
SD59x18 constant UNIT = SD59x18.wrap(1e18);

/// @dev The unit number squared.
int256 constant uUNIT_SQUARED = 1e36;
SD59x18 constant UNIT_SQUARED = SD59x18.wrap(uUNIT_SQUARED);

/// @dev Zero as an SD59x18 number.
SD59x18 constant ZERO = SD59x18.wrap(0);

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { SD59x18 } from "./ValueType.sol";

/// @notice Thrown when taking the absolute value of `MIN_SD59x18`.
error PRBMath_SD59x18_Abs_MinSD59x18();

/// @notice Thrown when ceiling a number overflows SD59x18.
error PRBMath_SD59x18_Ceil_Overflow(SD59x18 x);

/// @notice Thrown when converting a basic integer to the fixed-point format overflows SD59x18.
error PRBMath_SD59x18_Convert_Overflow(int256 x);

/// @notice Thrown when converting a basic integer to the fixed-point format underflows SD59x18.
error PRBMath_SD59x18_Convert_Underflow(int256 x);

/// @notice Thrown when dividing two numbers and one of them is `MIN_SD59x18`.
error PRBMath_SD59x18_Div_InputTooSmall();

/// @notice Thrown when dividing two numbers and one of the intermediary unsigned results overflows SD59x18.
error PRBMath_SD59x18_Div_Overflow(SD59x18 x, SD59x18 y);

/// @notice Thrown when taking the natural exponent of a base greater than 133_084258667509499441.
error PRBMath_SD59x18_Exp_InputTooBig(SD59x18 x);

/// @notice Thrown when taking the binary exponent of a base greater than 192e18.
error PRBMath_SD59x18_Exp2_InputTooBig(SD59x18 x);

/// @notice Thrown when flooring a number underflows SD59x18.
error PRBMath_SD59x18_Floor_Underflow(SD59x18 x);

/// @notice Thrown when taking the geometric mean of two numbers and their product is negative.
error PRBMath_SD59x18_Gm_NegativeProduct(SD59x18 x, SD59x18 y);

/// @notice Thrown when taking the geometric mean of two numbers and multiplying them overflows SD59x18.
error PRBMath_SD59x18_Gm_Overflow(SD59x18 x, SD59x18 y);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD1x18.
error PRBMath_SD59x18_IntoSD1x18_Overflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD1x18.
error PRBMath_SD59x18_IntoSD1x18_Underflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD2x18.
error PRBMath_SD59x18_IntoUD2x18_Overflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD2x18.
error PRBMath_SD59x18_IntoUD2x18_Underflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD60x18.
error PRBMath_SD59x18_IntoUD60x18_Underflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint128.
error PRBMath_SD59x18_IntoUint128_Overflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint128.
error PRBMath_SD59x18_IntoUint128_Underflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint256.
error PRBMath_SD59x18_IntoUint256_Underflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint40.
error PRBMath_SD59x18_IntoUint40_Overflow(SD59x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint40.
error PRBMath_SD59x18_IntoUint40_Underflow(SD59x18 x);

/// @notice Thrown when taking the logarithm of a number less than or equal to zero.
error PRBMath_SD59x18_Log_InputTooSmall(SD59x18 x);

/// @notice Thrown when multiplying two numbers and one of the inputs is `MIN_SD59x18`.
error PRBMath_SD59x18_Mul_InputTooSmall();

/// @notice Thrown when multiplying two numbers and the intermediary absolute result overflows SD59x18.
error PRBMath_SD59x18_Mul_Overflow(SD59x18 x, SD59x18 y);

/// @notice Thrown when raising a number to a power and hte intermediary absolute result overflows SD59x18.
error PRBMath_SD59x18_Powu_Overflow(SD59x18 x, uint256 y);

/// @notice Thrown when taking the square root of a negative number.
error PRBMath_SD59x18_Sqrt_NegativeInput(SD59x18 x);

/// @notice Thrown when the calculating the square root overflows SD59x18.
error PRBMath_SD59x18_Sqrt_Overflow(SD59x18 x);

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { wrap } from "./Casting.sol";
import { SD59x18 } from "./ValueType.sol";

/// @notice Implements the checked addition operation (+) in the SD59x18 type.
function add(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    return wrap(x.unwrap() + y.unwrap());
}

/// @notice Implements the AND (&) bitwise operation in the SD59x18 type.
function and(SD59x18 x, int256 bits) pure returns (SD59x18 result) {
    return wrap(x.unwrap() & bits);
}

/// @notice Implements the AND (&) bitwise operation in the SD59x18 type.
function and2(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    return wrap(x.unwrap() & y.unwrap());
}

/// @notice Implements the equal (=) operation in the SD59x18 type.
function eq(SD59x18 x, SD59x18 y) pure returns (bool result) {
    result = x.unwrap() == y.unwrap();
}

/// @notice Implements the greater than operation (>) in the SD59x18 type.
function gt(SD59x18 x, SD59x18 y) pure returns (bool result) {
    result = x.unwrap() > y.unwrap();
}

/// @notice Implements the greater than or equal to operation (>=) in the SD59x18 type.
function gte(SD59x18 x, SD59x18 y) pure returns (bool result) {
    result = x.unwrap() >= y.unwrap();
}

/// @notice Implements a zero comparison check function in the SD59x18 type.
function isZero(SD59x18 x) pure returns (bool result) {
    result = x.unwrap() == 0;
}

/// @notice Implements the left shift operation (<<) in the SD59x18 type.
function lshift(SD59x18 x, uint256 bits) pure returns (SD59x18 result) {
    result = wrap(x.unwrap() << bits);
}

/// @notice Implements the lower than operation (<) in the SD59x18 type.
function lt(SD59x18 x, SD59x18 y) pure returns (bool result) {
    result = x.unwrap() < y.unwrap();
}

/// @notice Implements the lower than or equal to operation (<=) in the SD59x18 type.
function lte(SD59x18 x, SD59x18 y) pure returns (bool result) {
    result = x.unwrap() <= y.unwrap();
}

/// @notice Implements the unchecked modulo operation (%) in the SD59x18 type.
function mod(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    result = wrap(x.unwrap() % y.unwrap());
}

/// @notice Implements the not equal operation (!=) in the SD59x18 type.
function neq(SD59x18 x, SD59x18 y) pure returns (bool result) {
    result = x.unwrap() != y.unwrap();
}

/// @notice Implements the NOT (~) bitwise operation in the SD59x18 type.
function not(SD59x18 x) pure returns (SD59x18 result) {
    result = wrap(~x.unwrap());
}

/// @notice Implements the OR (|) bitwise operation in the SD59x18 type.
function or(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    result = wrap(x.unwrap() | y.unwrap());
}

/// @notice Implements the right shift operation (>>) in the SD59x18 type.
function rshift(SD59x18 x, uint256 bits) pure returns (SD59x18 result) {
    result = wrap(x.unwrap() >> bits);
}

/// @notice Implements the checked subtraction operation (-) in the SD59x18 type.
function sub(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    result = wrap(x.unwrap() - y.unwrap());
}

/// @notice Implements the checked unary minus operation (-) in the SD59x18 type.
function unary(SD59x18 x) pure returns (SD59x18 result) {
    result = wrap(-x.unwrap());
}

/// @notice Implements the unchecked addition operation (+) in the SD59x18 type.
function uncheckedAdd(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    unchecked {
        result = wrap(x.unwrap() + y.unwrap());
    }
}

/// @notice Implements the unchecked subtraction operation (-) in the SD59x18 type.
function uncheckedSub(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    unchecked {
        result = wrap(x.unwrap() - y.unwrap());
    }
}

/// @notice Implements the unchecked unary minus operation (-) in the SD59x18 type.
function uncheckedUnary(SD59x18 x) pure returns (SD59x18 result) {
    unchecked {
        result = wrap(-x.unwrap());
    }
}

/// @notice Implements the XOR (^) bitwise operation in the SD59x18 type.
function xor(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    result = wrap(x.unwrap() ^ y.unwrap());
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "../Common.sol" as Common;
import "./Errors.sol" as Errors;
import {
    uEXP_MAX_INPUT,
    uEXP2_MAX_INPUT,
    uHALF_UNIT,
    uLOG2_10,
    uLOG2_E,
    uMAX_SD59x18,
    uMAX_WHOLE_SD59x18,
    uMIN_SD59x18,
    uMIN_WHOLE_SD59x18,
    UNIT,
    uUNIT,
    uUNIT_SQUARED,
    ZERO
} from "./Constants.sol";
import { wrap } from "./Helpers.sol";
import { SD59x18 } from "./ValueType.sol";

/// @notice Calculates the absolute value of x.
///
/// @dev Requirements:
/// - x must be greater than `MIN_SD59x18`.
///
/// @param x The SD59x18 number for which to calculate the absolute value.
/// @param result The absolute value of x as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function abs(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    if (xInt == uMIN_SD59x18) {
        revert Errors.PRBMath_SD59x18_Abs_MinSD59x18();
    }
    result = xInt < 0 ? wrap(-xInt) : x;
}

/// @notice Calculates the arithmetic average of x and y.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// @param x The first operand as an SD59x18 number.
/// @param y The second operand as an SD59x18 number.
/// @return result The arithmetic average as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function avg(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    int256 yInt = y.unwrap();

    unchecked {
        // This operation is equivalent to `x / 2 +  y / 2`, and it can never overflow.
        int256 sum = (xInt >> 1) + (yInt >> 1);

        if (sum < 0) {
            // If at least one of x and y is odd, add 1 to the result, because shifting negative numbers to the right
            // rounds toward negative infinity. The right part is equivalent to `sum + (x % 2 == 1 || y % 2 == 1)`.
            assembly ("memory-safe") {
                result := add(sum, and(or(xInt, yInt), 1))
            }
        } else {
            // Add 1 if both x and y are odd to account for the double 0.5 remainder truncated after shifting.
            result = wrap(sum + (xInt & yInt & 1));
        }
    }
}

/// @notice Yields the smallest whole number greater than or equal to x.
///
/// @dev Optimized for fractional value inputs, because every whole value has (1e18 - 1) fractional counterparts.
/// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
///
/// Requirements:
/// - x must be less than or equal to `MAX_WHOLE_SD59x18`.
///
/// @param x The SD59x18 number to ceil.
/// @param result The smallest whole number greater than or equal to x, as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function ceil(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    if (xInt > uMAX_WHOLE_SD59x18) {
        revert Errors.PRBMath_SD59x18_Ceil_Overflow(x);
    }

    int256 remainder = xInt % uUNIT;
    if (remainder == 0) {
        result = x;
    } else {
        unchecked {
            // Solidity uses C fmod style, which returns a modulus with the same sign as x.
            int256 resultInt = xInt - remainder;
            if (xInt > 0) {
                resultInt += uUNIT;
            }
            result = wrap(resultInt);
        }
    }
}

/// @notice Divides two SD59x18 numbers, returning a new SD59x18 number.
///
/// @dev This is an extension of {Common.mulDiv} for signed numbers, which works by computing the signs and the absolute
/// values separately.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv}.
/// - The result is rounded toward zero.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv}.
/// - None of the inputs can be `MIN_SD59x18`.
/// - The denominator must not be zero.
/// - The result must fit in SD59x18.
///
/// @param x The numerator as an SD59x18 number.
/// @param y The denominator as an SD59x18 number.
/// @param result The quotient as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function div(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    int256 yInt = y.unwrap();
    if (xInt == uMIN_SD59x18 || yInt == uMIN_SD59x18) {
        revert Errors.PRBMath_SD59x18_Div_InputTooSmall();
    }

    // Get hold of the absolute values of x and y.
    uint256 xAbs;
    uint256 yAbs;
    unchecked {
        xAbs = xInt < 0 ? uint256(-xInt) : uint256(xInt);
        yAbs = yInt < 0 ? uint256(-yInt) : uint256(yInt);
    }

    // Compute the absolute value (x*UNIT÷y). The resulting value must fit in SD59x18.
    uint256 resultAbs = Common.mulDiv(xAbs, uint256(uUNIT), yAbs);
    if (resultAbs > uint256(uMAX_SD59x18)) {
        revert Errors.PRBMath_SD59x18_Div_Overflow(x, y);
    }

    // Check if x and y have the same sign using two's complement representation. The left-most bit represents the sign (1 for
    // negative, 0 for positive or zero).
    bool sameSign = (xInt ^ yInt) > -1;

    // If the inputs have the same sign, the result should be positive. Otherwise, it should be negative.
    unchecked {
        result = wrap(sameSign ? int256(resultAbs) : -int256(resultAbs));
    }
}

/// @notice Calculates the natural exponent of x using the following formula:
///
/// $$
/// e^x = 2^{x * log_2{e}}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {exp2}.
///
/// Requirements:
/// - Refer to the requirements in {exp2}.
/// - x must be less than 133_084258667509499441.
///
/// @param x The exponent as an SD59x18 number.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();

    // This check prevents values greater than 192e18 from being passed to {exp2}.
    if (xInt > uEXP_MAX_INPUT) {
        revert Errors.PRBMath_SD59x18_Exp_InputTooBig(x);
    }

    unchecked {
        // Inline the fixed-point multiplication to save gas.
        int256 doubleUnitProduct = xInt * uLOG2_E;
        result = exp2(wrap(doubleUnitProduct / uUNIT));
    }
}

/// @notice Calculates the binary exponent of x using the binary fraction method using the following formula:
///
/// $$
/// 2^{-x} = \frac{1}{2^x}
/// $$
///
/// @dev See https://ethereum.stackexchange.com/q/79903/24693.
///
/// Notes:
/// - If x is less than -59_794705707972522261, the result is zero.
///
/// Requirements:
/// - x must be less than 192e18.
/// - The result must fit in SD59x18.
///
/// @param x The exponent as an SD59x18 number.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp2(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    if (xInt < 0) {
        // The inverse of any number less than this is truncated to zero.
        if (xInt < -59_794705707972522261) {
            return ZERO;
        }

        unchecked {
            // Inline the fixed-point inversion to save gas.
            result = wrap(uUNIT_SQUARED / exp2(wrap(-xInt)).unwrap());
        }
    } else {
        // Numbers greater than or equal to 192e18 don't fit in the 192.64-bit format.
        if (xInt > uEXP2_MAX_INPUT) {
            revert Errors.PRBMath_SD59x18_Exp2_InputTooBig(x);
        }

        unchecked {
            // Convert x to the 192.64-bit fixed-point format.
            uint256 x_192x64 = uint256((xInt << 64) / uUNIT);

            // It is safe to cast the result to int256 due to the checks above.
            result = wrap(int256(Common.exp2(x_192x64)));
        }
    }
}

/// @notice Yields the greatest whole number less than or equal to x.
///
/// @dev Optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional
/// counterparts. See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
///
/// Requirements:
/// - x must be greater than or equal to `MIN_WHOLE_SD59x18`.
///
/// @param x The SD59x18 number to floor.
/// @param result The greatest whole number less than or equal to x, as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function floor(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    if (xInt < uMIN_WHOLE_SD59x18) {
        revert Errors.PRBMath_SD59x18_Floor_Underflow(x);
    }

    int256 remainder = xInt % uUNIT;
    if (remainder == 0) {
        result = x;
    } else {
        unchecked {
            // Solidity uses C fmod style, which returns a modulus with the same sign as x.
            int256 resultInt = xInt - remainder;
            if (xInt < 0) {
                resultInt -= uUNIT;
            }
            result = wrap(resultInt);
        }
    }
}

/// @notice Yields the excess beyond the floor of x for positive numbers and the part of the number to the right.
/// of the radix point for negative numbers.
/// @dev Based on the odd function definition. https://en.wikipedia.org/wiki/Fractional_part
/// @param x The SD59x18 number to get the fractional part of.
/// @param result The fractional part of x as an SD59x18 number.
function frac(SD59x18 x) pure returns (SD59x18 result) {
    result = wrap(x.unwrap() % uUNIT);
}

/// @notice Calculates the geometric mean of x and y, i.e. $\sqrt{x * y}$.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x * y must fit in SD59x18.
/// - x * y must not be negative, since complex numbers are not supported.
///
/// @param x The first operand as an SD59x18 number.
/// @param y The second operand as an SD59x18 number.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function gm(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    int256 yInt = y.unwrap();
    if (xInt == 0 || yInt == 0) {
        return ZERO;
    }

    unchecked {
        // Equivalent to `xy / x != y`. Checking for overflow this way is faster than letting Solidity do it.
        int256 xyInt = xInt * yInt;
        if (xyInt / xInt != yInt) {
            revert Errors.PRBMath_SD59x18_Gm_Overflow(x, y);
        }

        // The product must not be negative, since complex numbers are not supported.
        if (xyInt < 0) {
            revert Errors.PRBMath_SD59x18_Gm_NegativeProduct(x, y);
        }

        // We don't need to multiply the result by `UNIT` here because the x*y product picked up a factor of `UNIT`
        // during multiplication. See the comments in {Common.sqrt}.
        uint256 resultUint = Common.sqrt(uint256(xyInt));
        result = wrap(int256(resultUint));
    }
}

/// @notice Calculates the inverse of x.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x must not be zero.
///
/// @param x The SD59x18 number for which to calculate the inverse.
/// @return result The inverse as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function inv(SD59x18 x) pure returns (SD59x18 result) {
    result = wrap(uUNIT_SQUARED / x.unwrap());
}

/// @notice Calculates the natural logarithm of x using the following formula:
///
/// $$
/// ln{x} = log_2{x} / log_2{e}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
/// - The precision isn't sufficiently fine-grained to return exactly `UNIT` when the input is `E`.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The SD59x18 number for which to calculate the natural logarithm.
/// @return result The natural logarithm as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function ln(SD59x18 x) pure returns (SD59x18 result) {
    // Inline the fixed-point multiplication to save gas. This is overflow-safe because the maximum value that
    // {log2} can return is ~195_205294292027477728.
    result = wrap(log2(x).unwrap() * uUNIT / uLOG2_E);
}

/// @notice Calculates the common logarithm of x using the following formula:
///
/// $$
/// log_{10}{x} = log_2{x} / log_2{10}
/// $$
///
/// However, if x is an exact power of ten, a hard coded value is returned.
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The SD59x18 number for which to calculate the common logarithm.
/// @return result The common logarithm as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function log10(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    if (xInt < 0) {
        revert Errors.PRBMath_SD59x18_Log_InputTooSmall(x);
    }

    // Note that the `mul` in this block is the standard multiplication operation, not {SD59x18.mul}.
    // prettier-ignore
    assembly ("memory-safe") {
        switch x
        case 1 { result := mul(uUNIT, sub(0, 18)) }
        case 10 { result := mul(uUNIT, sub(1, 18)) }
        case 100 { result := mul(uUNIT, sub(2, 18)) }
        case 1000 { result := mul(uUNIT, sub(3, 18)) }
        case 10000 { result := mul(uUNIT, sub(4, 18)) }
        case 100000 { result := mul(uUNIT, sub(5, 18)) }
        case 1000000 { result := mul(uUNIT, sub(6, 18)) }
        case 10000000 { result := mul(uUNIT, sub(7, 18)) }
        case 100000000 { result := mul(uUNIT, sub(8, 18)) }
        case 1000000000 { result := mul(uUNIT, sub(9, 18)) }
        case 10000000000 { result := mul(uUNIT, sub(10, 18)) }
        case 100000000000 { result := mul(uUNIT, sub(11, 18)) }
        case 1000000000000 { result := mul(uUNIT, sub(12, 18)) }
        case 10000000000000 { result := mul(uUNIT, sub(13, 18)) }
        case 100000000000000 { result := mul(uUNIT, sub(14, 18)) }
        case 1000000000000000 { result := mul(uUNIT, sub(15, 18)) }
        case 10000000000000000 { result := mul(uUNIT, sub(16, 18)) }
        case 100000000000000000 { result := mul(uUNIT, sub(17, 18)) }
        case 1000000000000000000 { result := 0 }
        case 10000000000000000000 { result := uUNIT }
        case 100000000000000000000 { result := mul(uUNIT, 2) }
        case 1000000000000000000000 { result := mul(uUNIT, 3) }
        case 10000000000000000000000 { result := mul(uUNIT, 4) }
        case 100000000000000000000000 { result := mul(uUNIT, 5) }
        case 1000000000000000000000000 { result := mul(uUNIT, 6) }
        case 10000000000000000000000000 { result := mul(uUNIT, 7) }
        case 100000000000000000000000000 { result := mul(uUNIT, 8) }
        case 1000000000000000000000000000 { result := mul(uUNIT, 9) }
        case 10000000000000000000000000000 { result := mul(uUNIT, 10) }
        case 100000000000000000000000000000 { result := mul(uUNIT, 11) }
        case 1000000000000000000000000000000 { result := mul(uUNIT, 12) }
        case 10000000000000000000000000000000 { result := mul(uUNIT, 13) }
        case 100000000000000000000000000000000 { result := mul(uUNIT, 14) }
        case 1000000000000000000000000000000000 { result := mul(uUNIT, 15) }
        case 10000000000000000000000000000000000 { result := mul(uUNIT, 16) }
        case 100000000000000000000000000000000000 { result := mul(uUNIT, 17) }
        case 1000000000000000000000000000000000000 { result := mul(uUNIT, 18) }
        case 10000000000000000000000000000000000000 { result := mul(uUNIT, 19) }
        case 100000000000000000000000000000000000000 { result := mul(uUNIT, 20) }
        case 1000000000000000000000000000000000000000 { result := mul(uUNIT, 21) }
        case 10000000000000000000000000000000000000000 { result := mul(uUNIT, 22) }
        case 100000000000000000000000000000000000000000 { result := mul(uUNIT, 23) }
        case 1000000000000000000000000000000000000000000 { result := mul(uUNIT, 24) }
        case 10000000000000000000000000000000000000000000 { result := mul(uUNIT, 25) }
        case 100000000000000000000000000000000000000000000 { result := mul(uUNIT, 26) }
        case 1000000000000000000000000000000000000000000000 { result := mul(uUNIT, 27) }
        case 10000000000000000000000000000000000000000000000 { result := mul(uUNIT, 28) }
        case 100000000000000000000000000000000000000000000000 { result := mul(uUNIT, 29) }
        case 1000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 30) }
        case 10000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 31) }
        case 100000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 32) }
        case 1000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 33) }
        case 10000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 34) }
        case 100000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 35) }
        case 1000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 36) }
        case 10000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 37) }
        case 100000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 38) }
        case 1000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 39) }
        case 10000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 40) }
        case 100000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 41) }
        case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 42) }
        case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 43) }
        case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 44) }
        case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 45) }
        case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 46) }
        case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 47) }
        case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 48) }
        case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 49) }
        case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 50) }
        case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 51) }
        case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 52) }
        case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 53) }
        case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 54) }
        case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 55) }
        case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 56) }
        case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 57) }
        case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 58) }
        default { result := uMAX_SD59x18 }
    }

    if (result.unwrap() == uMAX_SD59x18) {
        unchecked {
            // Inline the fixed-point division to save gas.
            result = wrap(log2(x).unwrap() * uUNIT / uLOG2_10);
        }
    }
}

/// @notice Calculates the binary logarithm of x using the iterative approximation algorithm:
///
/// $$
/// log_2{x} = n + log_2{y}, \text{ where } y = x*2^{-n}, \ y \in [1, 2)
/// $$
///
/// For $0 \leq x \lt 1$, the input is inverted:
///
/// $$
/// log_2{x} = -log_2{\frac{1}{x}}
/// $$
///
/// @dev See https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation.
///
/// Notes:
/// - Due to the lossy precision of the iterative approximation, the results are not perfectly accurate to the last decimal.
///
/// Requirements:
/// - x must be greater than zero.
///
/// @param x The SD59x18 number for which to calculate the binary logarithm.
/// @return result The binary logarithm as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function log2(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    if (xInt <= 0) {
        revert Errors.PRBMath_SD59x18_Log_InputTooSmall(x);
    }

    unchecked {
        int256 sign;
        if (xInt >= uUNIT) {
            sign = 1;
        } else {
            sign = -1;
            // Inline the fixed-point inversion to save gas.
            xInt = uUNIT_SQUARED / xInt;
        }

        // Calculate the integer part of the logarithm.
        uint256 n = Common.msb(uint256(xInt / uUNIT));

        // This is the integer part of the logarithm as an SD59x18 number. The operation can't overflow
        // because n is at most 255, `UNIT` is 1e18, and the sign is either 1 or -1.
        int256 resultInt = int256(n) * uUNIT;

        // Calculate $y = x * 2^{-n}$.
        int256 y = xInt >> n;

        // If y is the unit number, the fractional part is zero.
        if (y == uUNIT) {
            return wrap(resultInt * sign);
        }

        // Calculate the fractional part via the iterative approximation.
        // The `delta >>= 1` part is equivalent to `delta /= 2`, but shifting bits is more gas efficient.
        int256 DOUBLE_UNIT = 2e18;
        for (int256 delta = uHALF_UNIT; delta > 0; delta >>= 1) {
            y = (y * y) / uUNIT;

            // Is y^2 >= 2e18 and so in the range [2e18, 4e18)?
            if (y >= DOUBLE_UNIT) {
                // Add the 2^{-m} factor to the logarithm.
                resultInt = resultInt + delta;

                // Halve y, which corresponds to z/2 in the Wikipedia article.
                y >>= 1;
            }
        }
        resultInt *= sign;
        result = wrap(resultInt);
    }
}

/// @notice Multiplies two SD59x18 numbers together, returning a new SD59x18 number.
///
/// @dev Notes:
/// - Refer to the notes in {Common.mulDiv18}.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv18}.
/// - None of the inputs can be `MIN_SD59x18`.
/// - The result must fit in SD59x18.
///
/// @param x The multiplicand as an SD59x18 number.
/// @param y The multiplier as an SD59x18 number.
/// @return result The product as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function mul(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    int256 yInt = y.unwrap();
    if (xInt == uMIN_SD59x18 || yInt == uMIN_SD59x18) {
        revert Errors.PRBMath_SD59x18_Mul_InputTooSmall();
    }

    // Get hold of the absolute values of x and y.
    uint256 xAbs;
    uint256 yAbs;
    unchecked {
        xAbs = xInt < 0 ? uint256(-xInt) : uint256(xInt);
        yAbs = yInt < 0 ? uint256(-yInt) : uint256(yInt);
    }

    // Compute the absolute value (x*y÷UNIT). The resulting value must fit in SD59x18.
    uint256 resultAbs = Common.mulDiv18(xAbs, yAbs);
    if (resultAbs > uint256(uMAX_SD59x18)) {
        revert Errors.PRBMath_SD59x18_Mul_Overflow(x, y);
    }

    // Check if x and y have the same sign using two's complement representation. The left-most bit represents the sign (1 for
    // negative, 0 for positive or zero).
    bool sameSign = (xInt ^ yInt) > -1;

    // If the inputs have the same sign, the result should be positive. Otherwise, it should be negative.
    unchecked {
        result = wrap(sameSign ? int256(resultAbs) : -int256(resultAbs));
    }
}

/// @notice Raises x to the power of y using the following formula:
///
/// $$
/// x^y = 2^{log_2{x} * y}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {exp2}, {log2}, and {mul}.
/// - Returns `UNIT` for 0^0.
///
/// Requirements:
/// - Refer to the requirements in {exp2}, {log2}, and {mul}.
///
/// @param x The base as an SD59x18 number.
/// @param y Exponent to raise x to, as an SD59x18 number
/// @return result x raised to power y, as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function pow(SD59x18 x, SD59x18 y) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    int256 yInt = y.unwrap();

    // If both x and y are zero, the result is `UNIT`. If just x is zero, the result is always zero.
    if (xInt == 0) {
        return yInt == 0 ? UNIT : ZERO;
    }
    // If x is `UNIT`, the result is always `UNIT`.
    else if (xInt == uUNIT) {
        return UNIT;
    }

    // If y is zero, the result is always `UNIT`.
    if (yInt == 0) {
        return UNIT;
    }
    // If y is `UNIT`, the result is always x.
    else if (yInt == uUNIT) {
        return x;
    }

    // Calculate the result using the formula.
    result = exp2(mul(log2(x), y));
}

/// @notice Raises x (an SD59x18 number) to the power y (an unsigned basic integer) using the well-known
/// algorithm "exponentiation by squaring".
///
/// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv18}.
/// - Returns `UNIT` for 0^0.
///
/// Requirements:
/// - Refer to the requirements in {abs} and {Common.mulDiv18}.
/// - The result must fit in SD59x18.
///
/// @param x The base as an SD59x18 number.
/// @param y The exponent as a uint256.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function powu(SD59x18 x, uint256 y) pure returns (SD59x18 result) {
    uint256 xAbs = uint256(abs(x).unwrap());

    // Calculate the first iteration of the loop in advance.
    uint256 resultAbs = y & 1 > 0 ? xAbs : uint256(uUNIT);

    // Equivalent to `for(y /= 2; y > 0; y /= 2)`.
    uint256 yAux = y;
    for (yAux >>= 1; yAux > 0; yAux >>= 1) {
        xAbs = Common.mulDiv18(xAbs, xAbs);

        // Equivalent to `y % 2 == 1`.
        if (yAux & 1 > 0) {
            resultAbs = Common.mulDiv18(resultAbs, xAbs);
        }
    }

    // The result must fit in SD59x18.
    if (resultAbs > uint256(uMAX_SD59x18)) {
        revert Errors.PRBMath_SD59x18_Powu_Overflow(x, y);
    }

    unchecked {
        // Is the base negative and the exponent odd? If yes, the result should be negative.
        int256 resultInt = int256(resultAbs);
        bool isNegative = x.unwrap() < 0 && y & 1 == 1;
        if (isNegative) {
            resultInt = -resultInt;
        }
        result = wrap(resultInt);
    }
}

/// @notice Calculates the square root of x using the Babylonian method.
///
/// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Notes:
/// - Only the positive root is returned.
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x cannot be negative, since complex numbers are not supported.
/// - x must be less than `MAX_SD59x18 / UNIT`.
///
/// @param x The SD59x18 number for which to calculate the square root.
/// @return result The result as an SD59x18 number.
/// @custom:smtchecker abstract-function-nondet
function sqrt(SD59x18 x) pure returns (SD59x18 result) {
    int256 xInt = x.unwrap();
    if (xInt < 0) {
        revert Errors.PRBMath_SD59x18_Sqrt_NegativeInput(x);
    }
    if (xInt > uMAX_SD59x18 / uUNIT) {
        revert Errors.PRBMath_SD59x18_Sqrt_Overflow(x);
    }

    unchecked {
        // Multiply x by `UNIT` to account for the factor of `UNIT` picked up when multiplying two SD59x18 numbers.
        // In this case, the two numbers are both the square root.
        uint256 resultUint = Common.sqrt(uint256(xInt * uUNIT));
        result = wrap(int256(resultUint));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "./Casting.sol" as Casting;
import "./Helpers.sol" as Helpers;
import "./Math.sol" as Math;

/// @notice The signed 59.18-decimal fixed-point number representation, which can have up to 59 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type int256.
type SD59x18 is int256;

/*//////////////////////////////////////////////////////////////////////////
                                    CASTING
//////////////////////////////////////////////////////////////////////////*/

using {
    Casting.intoInt256,
    Casting.intoSD1x18,
    Casting.intoUD2x18,
    Casting.intoUD60x18,
    Casting.intoUint256,
    Casting.intoUint128,
    Casting.intoUint40,
    Casting.unwrap
} for SD59x18 global;

/*//////////////////////////////////////////////////////////////////////////
                            MATHEMATICAL FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

using {
    Math.abs,
    Math.avg,
    Math.ceil,
    Math.div,
    Math.exp,
    Math.exp2,
    Math.floor,
    Math.frac,
    Math.gm,
    Math.inv,
    Math.log10,
    Math.log2,
    Math.ln,
    Math.mul,
    Math.pow,
    Math.powu,
    Math.sqrt
} for SD59x18 global;

/*//////////////////////////////////////////////////////////////////////////
                                HELPER FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

using {
    Helpers.add,
    Helpers.and,
    Helpers.eq,
    Helpers.gt,
    Helpers.gte,
    Helpers.isZero,
    Helpers.lshift,
    Helpers.lt,
    Helpers.lte,
    Helpers.mod,
    Helpers.neq,
    Helpers.not,
    Helpers.or,
    Helpers.rshift,
    Helpers.sub,
    Helpers.uncheckedAdd,
    Helpers.uncheckedSub,
    Helpers.uncheckedUnary,
    Helpers.xor
} for SD59x18 global;

/*//////////////////////////////////////////////////////////////////////////
                                    OPERATORS
//////////////////////////////////////////////////////////////////////////*/

// The global "using for" directive makes it possible to use these operators on the SD59x18 type.
using {
    Helpers.add as +,
    Helpers.and2 as &,
    Math.div as /,
    Helpers.eq as ==,
    Helpers.gt as >,
    Helpers.gte as >=,
    Helpers.lt as <,
    Helpers.lte as <=,
    Helpers.mod as %,
    Math.mul as *,
    Helpers.neq as !=,
    Helpers.not as ~,
    Helpers.or as |,
    Helpers.sub as -,
    Helpers.unary as -,
    Helpers.xor as ^
} for SD59x18 global;

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "../Common.sol" as Common;
import "./Errors.sol" as Errors;
import { uMAX_SD1x18 } from "../sd1x18/Constants.sol";
import { SD1x18 } from "../sd1x18/ValueType.sol";
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { UD60x18 } from "../ud60x18/ValueType.sol";
import { UD2x18 } from "./ValueType.sol";

/// @notice Casts a UD2x18 number into SD1x18.
/// - x must be less than or equal to `uMAX_SD1x18`.
function intoSD1x18(UD2x18 x) pure returns (SD1x18 result) {
    uint64 xUint = UD2x18.unwrap(x);
    if (xUint > uint64(uMAX_SD1x18)) {
        revert Errors.PRBMath_UD2x18_IntoSD1x18_Overflow(x);
    }
    result = SD1x18.wrap(int64(xUint));
}

/// @notice Casts a UD2x18 number into SD59x18.
/// @dev There is no overflow check because the domain of UD2x18 is a subset of SD59x18.
function intoSD59x18(UD2x18 x) pure returns (SD59x18 result) {
    result = SD59x18.wrap(int256(uint256(UD2x18.unwrap(x))));
}

/// @notice Casts a UD2x18 number into UD60x18.
/// @dev There is no overflow check because the domain of UD2x18 is a subset of UD60x18.
function intoUD60x18(UD2x18 x) pure returns (UD60x18 result) {
    result = UD60x18.wrap(UD2x18.unwrap(x));
}

/// @notice Casts a UD2x18 number into uint128.
/// @dev There is no overflow check because the domain of UD2x18 is a subset of uint128.
function intoUint128(UD2x18 x) pure returns (uint128 result) {
    result = uint128(UD2x18.unwrap(x));
}

/// @notice Casts a UD2x18 number into uint256.
/// @dev There is no overflow check because the domain of UD2x18 is a subset of uint256.
function intoUint256(UD2x18 x) pure returns (uint256 result) {
    result = uint256(UD2x18.unwrap(x));
}

/// @notice Casts a UD2x18 number into uint40.
/// @dev Requirements:
/// - x must be less than or equal to `MAX_UINT40`.
function intoUint40(UD2x18 x) pure returns (uint40 result) {
    uint64 xUint = UD2x18.unwrap(x);
    if (xUint > uint64(Common.MAX_UINT40)) {
        revert Errors.PRBMath_UD2x18_IntoUint40_Overflow(x);
    }
    result = uint40(xUint);
}

/// @notice Alias for {wrap}.
function ud2x18(uint64 x) pure returns (UD2x18 result) {
    result = UD2x18.wrap(x);
}

/// @notice Unwrap a UD2x18 number into uint64.
function unwrap(UD2x18 x) pure returns (uint64 result) {
    result = UD2x18.unwrap(x);
}

/// @notice Wraps a uint64 number into UD2x18.
function wrap(uint64 x) pure returns (UD2x18 result) {
    result = UD2x18.wrap(x);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { UD2x18 } from "./ValueType.sol";

/// @dev Euler's number as a UD2x18 number.
UD2x18 constant E = UD2x18.wrap(2_718281828459045235);

/// @dev The maximum value a UD2x18 number can have.
uint64 constant uMAX_UD2x18 = 18_446744073709551615;
UD2x18 constant MAX_UD2x18 = UD2x18.wrap(uMAX_UD2x18);

/// @dev PI as a UD2x18 number.
UD2x18 constant PI = UD2x18.wrap(3_141592653589793238);

/// @dev The unit number, which gives the decimal precision of UD2x18.
uint256 constant uUNIT = 1e18;
UD2x18 constant UNIT = UD2x18.wrap(1e18);

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { UD2x18 } from "./ValueType.sol";

/// @notice Thrown when trying to cast a UD2x18 number that doesn't fit in SD1x18.
error PRBMath_UD2x18_IntoSD1x18_Overflow(UD2x18 x);

/// @notice Thrown when trying to cast a UD2x18 number that doesn't fit in uint40.
error PRBMath_UD2x18_IntoUint40_Overflow(UD2x18 x);

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "./Casting.sol" as Casting;

/// @notice The unsigned 2.18-decimal fixed-point number representation, which can have up to 2 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the underlying Solidity
/// type uint64. This is useful when end users want to use uint64 to save gas, e.g. with tight variable packing in contract
/// storage.
type UD2x18 is uint64;

/*//////////////////////////////////////////////////////////////////////////
                                    CASTING
//////////////////////////////////////////////////////////////////////////*/

using {
    Casting.intoSD1x18,
    Casting.intoSD59x18,
    Casting.intoUD60x18,
    Casting.intoUint256,
    Casting.intoUint128,
    Casting.intoUint40,
    Casting.unwrap
} for UD2x18 global;

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

/*

██████╗ ██████╗ ██████╗ ███╗   ███╗ █████╗ ████████╗██╗  ██╗
██╔══██╗██╔══██╗██╔══██╗████╗ ████║██╔══██╗╚══██╔══╝██║  ██║
██████╔╝██████╔╝██████╔╝██╔████╔██║███████║   ██║   ███████║
██╔═══╝ ██╔══██╗██╔══██╗██║╚██╔╝██║██╔══██║   ██║   ██╔══██║
██║     ██║  ██║██████╔╝██║ ╚═╝ ██║██║  ██║   ██║   ██║  ██║
╚═╝     ╚═╝  ╚═╝╚═════╝ ╚═╝     ╚═╝╚═╝  ╚═╝   ╚═╝   ╚═╝  ╚═╝

██╗   ██╗██████╗  ██████╗  ██████╗ ██╗  ██╗ ██╗ █████╗
██║   ██║██╔══██╗██╔════╝ ██╔═████╗╚██╗██╔╝███║██╔══██╗
██║   ██║██║  ██║███████╗ ██║██╔██║ ╚███╔╝ ╚██║╚█████╔╝
██║   ██║██║  ██║██╔═══██╗████╔╝██║ ██╔██╗  ██║██╔══██╗
╚██████╔╝██████╔╝╚██████╔╝╚██████╔╝██╔╝ ██╗ ██║╚█████╔╝
 ╚═════╝ ╚═════╝  ╚═════╝  ╚═════╝ ╚═╝  ╚═╝ ╚═╝ ╚════╝

*/

import "./ud60x18/Casting.sol";
import "./ud60x18/Constants.sol";
import "./ud60x18/Conversions.sol";
import "./ud60x18/Errors.sol";
import "./ud60x18/Helpers.sol";
import "./ud60x18/Math.sol";
import "./ud60x18/ValueType.sol";

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "./Errors.sol" as CastingErrors;
import { MAX_UINT128, MAX_UINT40 } from "../Common.sol";
import { uMAX_SD1x18 } from "../sd1x18/Constants.sol";
import { SD1x18 } from "../sd1x18/ValueType.sol";
import { uMAX_SD59x18 } from "../sd59x18/Constants.sol";
import { SD59x18 } from "../sd59x18/ValueType.sol";
import { uMAX_UD2x18 } from "../ud2x18/Constants.sol";
import { UD2x18 } from "../ud2x18/ValueType.sol";
import { UD60x18 } from "./ValueType.sol";

/// @notice Casts a UD60x18 number into SD1x18.
/// @dev Requirements:
/// - x must be less than or equal to `uMAX_SD1x18`.
function intoSD1x18(UD60x18 x) pure returns (SD1x18 result) {
    uint256 xUint = UD60x18.unwrap(x);
    if (xUint > uint256(int256(uMAX_SD1x18))) {
        revert CastingErrors.PRBMath_UD60x18_IntoSD1x18_Overflow(x);
    }
    result = SD1x18.wrap(int64(uint64(xUint)));
}

/// @notice Casts a UD60x18 number into UD2x18.
/// @dev Requirements:
/// - x must be less than or equal to `uMAX_UD2x18`.
function intoUD2x18(UD60x18 x) pure returns (UD2x18 result) {
    uint256 xUint = UD60x18.unwrap(x);
    if (xUint > uMAX_UD2x18) {
        revert CastingErrors.PRBMath_UD60x18_IntoUD2x18_Overflow(x);
    }
    result = UD2x18.wrap(uint64(xUint));
}

/// @notice Casts a UD60x18 number into SD59x18.
/// @dev Requirements:
/// - x must be less than or equal to `uMAX_SD59x18`.
function intoSD59x18(UD60x18 x) pure returns (SD59x18 result) {
    uint256 xUint = UD60x18.unwrap(x);
    if (xUint > uint256(uMAX_SD59x18)) {
        revert CastingErrors.PRBMath_UD60x18_IntoSD59x18_Overflow(x);
    }
    result = SD59x18.wrap(int256(xUint));
}

/// @notice Casts a UD60x18 number into uint128.
/// @dev This is basically an alias for {unwrap}.
function intoUint256(UD60x18 x) pure returns (uint256 result) {
    result = UD60x18.unwrap(x);
}

/// @notice Casts a UD60x18 number into uint128.
/// @dev Requirements:
/// - x must be less than or equal to `MAX_UINT128`.
function intoUint128(UD60x18 x) pure returns (uint128 result) {
    uint256 xUint = UD60x18.unwrap(x);
    if (xUint > MAX_UINT128) {
        revert CastingErrors.PRBMath_UD60x18_IntoUint128_Overflow(x);
    }
    result = uint128(xUint);
}

/// @notice Casts a UD60x18 number into uint40.
/// @dev Requirements:
/// - x must be less than or equal to `MAX_UINT40`.
function intoUint40(UD60x18 x) pure returns (uint40 result) {
    uint256 xUint = UD60x18.unwrap(x);
    if (xUint > MAX_UINT40) {
        revert CastingErrors.PRBMath_UD60x18_IntoUint40_Overflow(x);
    }
    result = uint40(xUint);
}

/// @notice Alias for {wrap}.
function ud(uint256 x) pure returns (UD60x18 result) {
    result = UD60x18.wrap(x);
}

/// @notice Alias for {wrap}.
function ud60x18(uint256 x) pure returns (UD60x18 result) {
    result = UD60x18.wrap(x);
}

/// @notice Unwraps a UD60x18 number into uint256.
function unwrap(UD60x18 x) pure returns (uint256 result) {
    result = UD60x18.unwrap(x);
}

/// @notice Wraps a uint256 number into the UD60x18 value type.
function wrap(uint256 x) pure returns (UD60x18 result) {
    result = UD60x18.wrap(x);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { UD60x18 } from "./ValueType.sol";

// NOTICE: the "u" prefix stands for "unwrapped".

/// @dev Euler's number as a UD60x18 number.
UD60x18 constant E = UD60x18.wrap(2_718281828459045235);

/// @dev The maximum input permitted in {exp}.
uint256 constant uEXP_MAX_INPUT = 133_084258667509499440;
UD60x18 constant EXP_MAX_INPUT = UD60x18.wrap(uEXP_MAX_INPUT);

/// @dev The maximum input permitted in {exp2}.
uint256 constant uEXP2_MAX_INPUT = 192e18 - 1;
UD60x18 constant EXP2_MAX_INPUT = UD60x18.wrap(uEXP2_MAX_INPUT);

/// @dev Half the UNIT number.
uint256 constant uHALF_UNIT = 0.5e18;
UD60x18 constant HALF_UNIT = UD60x18.wrap(uHALF_UNIT);

/// @dev $log_2(10)$ as a UD60x18 number.
uint256 constant uLOG2_10 = 3_321928094887362347;
UD60x18 constant LOG2_10 = UD60x18.wrap(uLOG2_10);

/// @dev $log_2(e)$ as a UD60x18 number.
uint256 constant uLOG2_E = 1_442695040888963407;
UD60x18 constant LOG2_E = UD60x18.wrap(uLOG2_E);

/// @dev The maximum value a UD60x18 number can have.
uint256 constant uMAX_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_584007913129639935;
UD60x18 constant MAX_UD60x18 = UD60x18.wrap(uMAX_UD60x18);

/// @dev The maximum whole value a UD60x18 number can have.
uint256 constant uMAX_WHOLE_UD60x18 = 115792089237316195423570985008687907853269984665640564039457_000000000000000000;
UD60x18 constant MAX_WHOLE_UD60x18 = UD60x18.wrap(uMAX_WHOLE_UD60x18);

/// @dev PI as a UD60x18 number.
UD60x18 constant PI = UD60x18.wrap(3_141592653589793238);

/// @dev The unit number, which gives the decimal precision of UD60x18.
uint256 constant uUNIT = 1e18;
UD60x18 constant UNIT = UD60x18.wrap(uUNIT);

/// @dev The unit number squared.
uint256 constant uUNIT_SQUARED = 1e36;
UD60x18 constant UNIT_SQUARED = UD60x18.wrap(uUNIT_SQUARED);

/// @dev Zero as a UD60x18 number.
UD60x18 constant ZERO = UD60x18.wrap(0);

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { uMAX_UD60x18, uUNIT } from "./Constants.sol";
import { PRBMath_UD60x18_Convert_Overflow } from "./Errors.sol";
import { UD60x18 } from "./ValueType.sol";

/// @notice Converts a UD60x18 number to a simple integer by dividing it by `UNIT`.
/// @dev The result is rounded toward zero.
/// @param x The UD60x18 number to convert.
/// @return result The same number in basic integer form.
function convert(UD60x18 x) pure returns (uint256 result) {
    result = UD60x18.unwrap(x) / uUNIT;
}

/// @notice Converts a simple integer to UD60x18 by multiplying it by `UNIT`.
///
/// @dev Requirements:
/// - x must be less than or equal to `MAX_UD60x18 / UNIT`.
///
/// @param x The basic integer to convert.
/// @param result The same number converted to UD60x18.
function convert(uint256 x) pure returns (UD60x18 result) {
    if (x > uMAX_UD60x18 / uUNIT) {
        revert PRBMath_UD60x18_Convert_Overflow(x);
    }
    unchecked {
        result = UD60x18.wrap(x * uUNIT);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { UD60x18 } from "./ValueType.sol";

/// @notice Thrown when ceiling a number overflows UD60x18.
error PRBMath_UD60x18_Ceil_Overflow(UD60x18 x);

/// @notice Thrown when converting a basic integer to the fixed-point format overflows UD60x18.
error PRBMath_UD60x18_Convert_Overflow(uint256 x);

/// @notice Thrown when taking the natural exponent of a base greater than 133_084258667509499441.
error PRBMath_UD60x18_Exp_InputTooBig(UD60x18 x);

/// @notice Thrown when taking the binary exponent of a base greater than 192e18.
error PRBMath_UD60x18_Exp2_InputTooBig(UD60x18 x);

/// @notice Thrown when taking the geometric mean of two numbers and multiplying them overflows UD60x18.
error PRBMath_UD60x18_Gm_Overflow(UD60x18 x, UD60x18 y);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD1x18.
error PRBMath_UD60x18_IntoSD1x18_Overflow(UD60x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in SD59x18.
error PRBMath_UD60x18_IntoSD59x18_Overflow(UD60x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in UD2x18.
error PRBMath_UD60x18_IntoUD2x18_Overflow(UD60x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint128.
error PRBMath_UD60x18_IntoUint128_Overflow(UD60x18 x);

/// @notice Thrown when trying to cast a UD60x18 number that doesn't fit in uint40.
error PRBMath_UD60x18_IntoUint40_Overflow(UD60x18 x);

/// @notice Thrown when taking the logarithm of a number less than 1.
error PRBMath_UD60x18_Log_InputTooSmall(UD60x18 x);

/// @notice Thrown when calculating the square root overflows UD60x18.
error PRBMath_UD60x18_Sqrt_Overflow(UD60x18 x);

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import { wrap } from "./Casting.sol";
import { UD60x18 } from "./ValueType.sol";

/// @notice Implements the checked addition operation (+) in the UD60x18 type.
function add(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() + y.unwrap());
}

/// @notice Implements the AND (&) bitwise operation in the UD60x18 type.
function and(UD60x18 x, uint256 bits) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() & bits);
}

/// @notice Implements the AND (&) bitwise operation in the UD60x18 type.
function and2(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() & y.unwrap());
}

/// @notice Implements the equal operation (==) in the UD60x18 type.
function eq(UD60x18 x, UD60x18 y) pure returns (bool result) {
    result = x.unwrap() == y.unwrap();
}

/// @notice Implements the greater than operation (>) in the UD60x18 type.
function gt(UD60x18 x, UD60x18 y) pure returns (bool result) {
    result = x.unwrap() > y.unwrap();
}

/// @notice Implements the greater than or equal to operation (>=) in the UD60x18 type.
function gte(UD60x18 x, UD60x18 y) pure returns (bool result) {
    result = x.unwrap() >= y.unwrap();
}

/// @notice Implements a zero comparison check function in the UD60x18 type.
function isZero(UD60x18 x) pure returns (bool result) {
    // This wouldn't work if x could be negative.
    result = x.unwrap() == 0;
}

/// @notice Implements the left shift operation (<<) in the UD60x18 type.
function lshift(UD60x18 x, uint256 bits) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() << bits);
}

/// @notice Implements the lower than operation (<) in the UD60x18 type.
function lt(UD60x18 x, UD60x18 y) pure returns (bool result) {
    result = x.unwrap() < y.unwrap();
}

/// @notice Implements the lower than or equal to operation (<=) in the UD60x18 type.
function lte(UD60x18 x, UD60x18 y) pure returns (bool result) {
    result = x.unwrap() <= y.unwrap();
}

/// @notice Implements the checked modulo operation (%) in the UD60x18 type.
function mod(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() % y.unwrap());
}

/// @notice Implements the not equal operation (!=) in the UD60x18 type.
function neq(UD60x18 x, UD60x18 y) pure returns (bool result) {
    result = x.unwrap() != y.unwrap();
}

/// @notice Implements the NOT (~) bitwise operation in the UD60x18 type.
function not(UD60x18 x) pure returns (UD60x18 result) {
    result = wrap(~x.unwrap());
}

/// @notice Implements the OR (|) bitwise operation in the UD60x18 type.
function or(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() | y.unwrap());
}

/// @notice Implements the right shift operation (>>) in the UD60x18 type.
function rshift(UD60x18 x, uint256 bits) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() >> bits);
}

/// @notice Implements the checked subtraction operation (-) in the UD60x18 type.
function sub(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() - y.unwrap());
}

/// @notice Implements the unchecked addition operation (+) in the UD60x18 type.
function uncheckedAdd(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    unchecked {
        result = wrap(x.unwrap() + y.unwrap());
    }
}

/// @notice Implements the unchecked subtraction operation (-) in the UD60x18 type.
function uncheckedSub(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    unchecked {
        result = wrap(x.unwrap() - y.unwrap());
    }
}

/// @notice Implements the XOR (^) bitwise operation in the UD60x18 type.
function xor(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(x.unwrap() ^ y.unwrap());
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "../Common.sol" as Common;
import "./Errors.sol" as Errors;
import { wrap } from "./Casting.sol";
import {
    uEXP_MAX_INPUT,
    uEXP2_MAX_INPUT,
    uHALF_UNIT,
    uLOG2_10,
    uLOG2_E,
    uMAX_UD60x18,
    uMAX_WHOLE_UD60x18,
    UNIT,
    uUNIT,
    uUNIT_SQUARED,
    ZERO
} from "./Constants.sol";
import { UD60x18 } from "./ValueType.sol";

/*//////////////////////////////////////////////////////////////////////////
                            MATHEMATICAL FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

/// @notice Calculates the arithmetic average of x and y using the following formula:
///
/// $$
/// avg(x, y) = (x & y) + ((xUint ^ yUint) / 2)
/// $$
//
/// In English, this is what this formula does:
///
/// 1. AND x and y.
/// 2. Calculate half of XOR x and y.
/// 3. Add the two results together.
///
/// This technique is known as SWAR, which stands for "SIMD within a register". You can read more about it here:
/// https://devblogs.microsoft.com/oldnewthing/20220207-00/?p=106223
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// @param x The first operand as a UD60x18 number.
/// @param y The second operand as a UD60x18 number.
/// @return result The arithmetic average as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function avg(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();
    uint256 yUint = y.unwrap();
    unchecked {
        result = wrap((xUint & yUint) + ((xUint ^ yUint) >> 1));
    }
}

/// @notice Yields the smallest whole number greater than or equal to x.
///
/// @dev This is optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional
/// counterparts. See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
///
/// Requirements:
/// - x must be less than or equal to `MAX_WHOLE_UD60x18`.
///
/// @param x The UD60x18 number to ceil.
/// @param result The smallest whole number greater than or equal to x, as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function ceil(UD60x18 x) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();
    if (xUint > uMAX_WHOLE_UD60x18) {
        revert Errors.PRBMath_UD60x18_Ceil_Overflow(x);
    }

    assembly ("memory-safe") {
        // Equivalent to `x % UNIT`.
        let remainder := mod(x, uUNIT)

        // Equivalent to `UNIT - remainder`.
        let delta := sub(uUNIT, remainder)

        // Equivalent to `x + remainder > 0 ? delta : 0`.
        result := add(x, mul(delta, gt(remainder, 0)))
    }
}

/// @notice Divides two UD60x18 numbers, returning a new UD60x18 number.
///
/// @dev Uses {Common.mulDiv} to enable overflow-safe multiplication and division.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv}.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv}.
///
/// @param x The numerator as a UD60x18 number.
/// @param y The denominator as a UD60x18 number.
/// @param result The quotient as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function div(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(Common.mulDiv(x.unwrap(), uUNIT, y.unwrap()));
}

/// @notice Calculates the natural exponent of x using the following formula:
///
/// $$
/// e^x = 2^{x * log_2{e}}
/// $$
///
/// @dev Requirements:
/// - x must be less than 133_084258667509499441.
///
/// @param x The exponent as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp(UD60x18 x) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();

    // This check prevents values greater than 192e18 from being passed to {exp2}.
    if (xUint > uEXP_MAX_INPUT) {
        revert Errors.PRBMath_UD60x18_Exp_InputTooBig(x);
    }

    unchecked {
        // Inline the fixed-point multiplication to save gas.
        uint256 doubleUnitProduct = xUint * uLOG2_E;
        result = exp2(wrap(doubleUnitProduct / uUNIT));
    }
}

/// @notice Calculates the binary exponent of x using the binary fraction method.
///
/// @dev See https://ethereum.stackexchange.com/q/79903/24693
///
/// Requirements:
/// - x must be less than 192e18.
/// - The result must fit in UD60x18.
///
/// @param x The exponent as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function exp2(UD60x18 x) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();

    // Numbers greater than or equal to 192e18 don't fit in the 192.64-bit format.
    if (xUint > uEXP2_MAX_INPUT) {
        revert Errors.PRBMath_UD60x18_Exp2_InputTooBig(x);
    }

    // Convert x to the 192.64-bit fixed-point format.
    uint256 x_192x64 = (xUint << 64) / uUNIT;

    // Pass x to the {Common.exp2} function, which uses the 192.64-bit fixed-point number representation.
    result = wrap(Common.exp2(x_192x64));
}

/// @notice Yields the greatest whole number less than or equal to x.
/// @dev Optimized for fractional value inputs, because every whole value has (1e18 - 1) fractional counterparts.
/// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
/// @param x The UD60x18 number to floor.
/// @param result The greatest whole number less than or equal to x, as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function floor(UD60x18 x) pure returns (UD60x18 result) {
    assembly ("memory-safe") {
        // Equivalent to `x % UNIT`.
        let remainder := mod(x, uUNIT)

        // Equivalent to `x - remainder > 0 ? remainder : 0)`.
        result := sub(x, mul(remainder, gt(remainder, 0)))
    }
}

/// @notice Yields the excess beyond the floor of x using the odd function definition.
/// @dev See https://en.wikipedia.org/wiki/Fractional_part.
/// @param x The UD60x18 number to get the fractional part of.
/// @param result The fractional part of x as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function frac(UD60x18 x) pure returns (UD60x18 result) {
    assembly ("memory-safe") {
        result := mod(x, uUNIT)
    }
}

/// @notice Calculates the geometric mean of x and y, i.e. $\sqrt{x * y}$, rounding down.
///
/// @dev Requirements:
/// - x * y must fit in UD60x18.
///
/// @param x The first operand as a UD60x18 number.
/// @param y The second operand as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function gm(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();
    uint256 yUint = y.unwrap();
    if (xUint == 0 || yUint == 0) {
        return ZERO;
    }

    unchecked {
        // Checking for overflow this way is faster than letting Solidity do it.
        uint256 xyUint = xUint * yUint;
        if (xyUint / xUint != yUint) {
            revert Errors.PRBMath_UD60x18_Gm_Overflow(x, y);
        }

        // We don't need to multiply the result by `UNIT` here because the x*y product picked up a factor of `UNIT`
        // during multiplication. See the comments in {Common.sqrt}.
        result = wrap(Common.sqrt(xyUint));
    }
}

/// @notice Calculates the inverse of x.
///
/// @dev Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x must not be zero.
///
/// @param x The UD60x18 number for which to calculate the inverse.
/// @return result The inverse as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function inv(UD60x18 x) pure returns (UD60x18 result) {
    unchecked {
        result = wrap(uUNIT_SQUARED / x.unwrap());
    }
}

/// @notice Calculates the natural logarithm of x using the following formula:
///
/// $$
/// ln{x} = log_2{x} / log_2{e}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
/// - The precision isn't sufficiently fine-grained to return exactly `UNIT` when the input is `E`.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The UD60x18 number for which to calculate the natural logarithm.
/// @return result The natural logarithm as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function ln(UD60x18 x) pure returns (UD60x18 result) {
    unchecked {
        // Inline the fixed-point multiplication to save gas. This is overflow-safe because the maximum value that
        // {log2} can return is ~196_205294292027477728.
        result = wrap(log2(x).unwrap() * uUNIT / uLOG2_E);
    }
}

/// @notice Calculates the common logarithm of x using the following formula:
///
/// $$
/// log_{10}{x} = log_2{x} / log_2{10}
/// $$
///
/// However, if x is an exact power of ten, a hard coded value is returned.
///
/// @dev Notes:
/// - Refer to the notes in {log2}.
///
/// Requirements:
/// - Refer to the requirements in {log2}.
///
/// @param x The UD60x18 number for which to calculate the common logarithm.
/// @return result The common logarithm as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function log10(UD60x18 x) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();
    if (xUint < uUNIT) {
        revert Errors.PRBMath_UD60x18_Log_InputTooSmall(x);
    }

    // Note that the `mul` in this assembly block is the standard multiplication operation, not {UD60x18.mul}.
    // prettier-ignore
    assembly ("memory-safe") {
        switch x
        case 1 { result := mul(uUNIT, sub(0, 18)) }
        case 10 { result := mul(uUNIT, sub(1, 18)) }
        case 100 { result := mul(uUNIT, sub(2, 18)) }
        case 1000 { result := mul(uUNIT, sub(3, 18)) }
        case 10000 { result := mul(uUNIT, sub(4, 18)) }
        case 100000 { result := mul(uUNIT, sub(5, 18)) }
        case 1000000 { result := mul(uUNIT, sub(6, 18)) }
        case 10000000 { result := mul(uUNIT, sub(7, 18)) }
        case 100000000 { result := mul(uUNIT, sub(8, 18)) }
        case 1000000000 { result := mul(uUNIT, sub(9, 18)) }
        case 10000000000 { result := mul(uUNIT, sub(10, 18)) }
        case 100000000000 { result := mul(uUNIT, sub(11, 18)) }
        case 1000000000000 { result := mul(uUNIT, sub(12, 18)) }
        case 10000000000000 { result := mul(uUNIT, sub(13, 18)) }
        case 100000000000000 { result := mul(uUNIT, sub(14, 18)) }
        case 1000000000000000 { result := mul(uUNIT, sub(15, 18)) }
        case 10000000000000000 { result := mul(uUNIT, sub(16, 18)) }
        case 100000000000000000 { result := mul(uUNIT, sub(17, 18)) }
        case 1000000000000000000 { result := 0 }
        case 10000000000000000000 { result := uUNIT }
        case 100000000000000000000 { result := mul(uUNIT, 2) }
        case 1000000000000000000000 { result := mul(uUNIT, 3) }
        case 10000000000000000000000 { result := mul(uUNIT, 4) }
        case 100000000000000000000000 { result := mul(uUNIT, 5) }
        case 1000000000000000000000000 { result := mul(uUNIT, 6) }
        case 10000000000000000000000000 { result := mul(uUNIT, 7) }
        case 100000000000000000000000000 { result := mul(uUNIT, 8) }
        case 1000000000000000000000000000 { result := mul(uUNIT, 9) }
        case 10000000000000000000000000000 { result := mul(uUNIT, 10) }
        case 100000000000000000000000000000 { result := mul(uUNIT, 11) }
        case 1000000000000000000000000000000 { result := mul(uUNIT, 12) }
        case 10000000000000000000000000000000 { result := mul(uUNIT, 13) }
        case 100000000000000000000000000000000 { result := mul(uUNIT, 14) }
        case 1000000000000000000000000000000000 { result := mul(uUNIT, 15) }
        case 10000000000000000000000000000000000 { result := mul(uUNIT, 16) }
        case 100000000000000000000000000000000000 { result := mul(uUNIT, 17) }
        case 1000000000000000000000000000000000000 { result := mul(uUNIT, 18) }
        case 10000000000000000000000000000000000000 { result := mul(uUNIT, 19) }
        case 100000000000000000000000000000000000000 { result := mul(uUNIT, 20) }
        case 1000000000000000000000000000000000000000 { result := mul(uUNIT, 21) }
        case 10000000000000000000000000000000000000000 { result := mul(uUNIT, 22) }
        case 100000000000000000000000000000000000000000 { result := mul(uUNIT, 23) }
        case 1000000000000000000000000000000000000000000 { result := mul(uUNIT, 24) }
        case 10000000000000000000000000000000000000000000 { result := mul(uUNIT, 25) }
        case 100000000000000000000000000000000000000000000 { result := mul(uUNIT, 26) }
        case 1000000000000000000000000000000000000000000000 { result := mul(uUNIT, 27) }
        case 10000000000000000000000000000000000000000000000 { result := mul(uUNIT, 28) }
        case 100000000000000000000000000000000000000000000000 { result := mul(uUNIT, 29) }
        case 1000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 30) }
        case 10000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 31) }
        case 100000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 32) }
        case 1000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 33) }
        case 10000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 34) }
        case 100000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 35) }
        case 1000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 36) }
        case 10000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 37) }
        case 100000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 38) }
        case 1000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 39) }
        case 10000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 40) }
        case 100000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 41) }
        case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 42) }
        case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 43) }
        case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 44) }
        case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 45) }
        case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 46) }
        case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 47) }
        case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 48) }
        case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 49) }
        case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 50) }
        case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 51) }
        case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 52) }
        case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 53) }
        case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 54) }
        case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 55) }
        case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 56) }
        case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 57) }
        case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 58) }
        case 100000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(uUNIT, 59) }
        default { result := uMAX_UD60x18 }
    }

    if (result.unwrap() == uMAX_UD60x18) {
        unchecked {
            // Inline the fixed-point division to save gas.
            result = wrap(log2(x).unwrap() * uUNIT / uLOG2_10);
        }
    }
}

/// @notice Calculates the binary logarithm of x using the iterative approximation algorithm:
///
/// $$
/// log_2{x} = n + log_2{y}, \text{ where } y = x*2^{-n}, \ y \in [1, 2)
/// $$
///
/// For $0 \leq x \lt 1$, the input is inverted:
///
/// $$
/// log_2{x} = -log_2{\frac{1}{x}}
/// $$
///
/// @dev See https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation
///
/// Notes:
/// - Due to the lossy precision of the iterative approximation, the results are not perfectly accurate to the last decimal.
///
/// Requirements:
/// - x must be greater than zero.
///
/// @param x The UD60x18 number for which to calculate the binary logarithm.
/// @return result The binary logarithm as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function log2(UD60x18 x) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();

    if (xUint < uUNIT) {
        revert Errors.PRBMath_UD60x18_Log_InputTooSmall(x);
    }

    unchecked {
        // Calculate the integer part of the logarithm.
        uint256 n = Common.msb(xUint / uUNIT);

        // This is the integer part of the logarithm as a UD60x18 number. The operation can't overflow because n
        // n is at most 255 and UNIT is 1e18.
        uint256 resultUint = n * uUNIT;

        // Calculate $y = x * 2^{-n}$.
        uint256 y = xUint >> n;

        // If y is the unit number, the fractional part is zero.
        if (y == uUNIT) {
            return wrap(resultUint);
        }

        // Calculate the fractional part via the iterative approximation.
        // The `delta >>= 1` part is equivalent to `delta /= 2`, but shifting bits is more gas efficient.
        uint256 DOUBLE_UNIT = 2e18;
        for (uint256 delta = uHALF_UNIT; delta > 0; delta >>= 1) {
            y = (y * y) / uUNIT;

            // Is y^2 >= 2e18 and so in the range [2e18, 4e18)?
            if (y >= DOUBLE_UNIT) {
                // Add the 2^{-m} factor to the logarithm.
                resultUint += delta;

                // Halve y, which corresponds to z/2 in the Wikipedia article.
                y >>= 1;
            }
        }
        result = wrap(resultUint);
    }
}

/// @notice Multiplies two UD60x18 numbers together, returning a new UD60x18 number.
///
/// @dev Uses {Common.mulDiv} to enable overflow-safe multiplication and division.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv}.
///
/// Requirements:
/// - Refer to the requirements in {Common.mulDiv}.
///
/// @dev See the documentation in {Common.mulDiv18}.
/// @param x The multiplicand as a UD60x18 number.
/// @param y The multiplier as a UD60x18 number.
/// @return result The product as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function mul(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    result = wrap(Common.mulDiv18(x.unwrap(), y.unwrap()));
}

/// @notice Raises x to the power of y.
///
/// For $1 \leq x \leq \infty$, the following standard formula is used:
///
/// $$
/// x^y = 2^{log_2{x} * y}
/// $$
///
/// For $0 \leq x \lt 1$, since the unsigned {log2} is undefined, an equivalent formula is used:
///
/// $$
/// i = \frac{1}{x}
/// w = 2^{log_2{i} * y}
/// x^y = \frac{1}{w}
/// $$
///
/// @dev Notes:
/// - Refer to the notes in {log2} and {mul}.
/// - Returns `UNIT` for 0^0.
/// - It may not perform well with very small values of x. Consider using SD59x18 as an alternative.
///
/// Requirements:
/// - Refer to the requirements in {exp2}, {log2}, and {mul}.
///
/// @param x The base as a UD60x18 number.
/// @param y The exponent as a UD60x18 number.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function pow(UD60x18 x, UD60x18 y) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();
    uint256 yUint = y.unwrap();

    // If both x and y are zero, the result is `UNIT`. If just x is zero, the result is always zero.
    if (xUint == 0) {
        return yUint == 0 ? UNIT : ZERO;
    }
    // If x is `UNIT`, the result is always `UNIT`.
    else if (xUint == uUNIT) {
        return UNIT;
    }

    // If y is zero, the result is always `UNIT`.
    if (yUint == 0) {
        return UNIT;
    }
    // If y is `UNIT`, the result is always x.
    else if (yUint == uUNIT) {
        return x;
    }

    // If x is greater than `UNIT`, use the standard formula.
    if (xUint > uUNIT) {
        result = exp2(mul(log2(x), y));
    }
    // Conversely, if x is less than `UNIT`, use the equivalent formula.
    else {
        UD60x18 i = wrap(uUNIT_SQUARED / xUint);
        UD60x18 w = exp2(mul(log2(i), y));
        result = wrap(uUNIT_SQUARED / w.unwrap());
    }
}

/// @notice Raises x (a UD60x18 number) to the power y (an unsigned basic integer) using the well-known
/// algorithm "exponentiation by squaring".
///
/// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring.
///
/// Notes:
/// - Refer to the notes in {Common.mulDiv18}.
/// - Returns `UNIT` for 0^0.
///
/// Requirements:
/// - The result must fit in UD60x18.
///
/// @param x The base as a UD60x18 number.
/// @param y The exponent as a uint256.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function powu(UD60x18 x, uint256 y) pure returns (UD60x18 result) {
    // Calculate the first iteration of the loop in advance.
    uint256 xUint = x.unwrap();
    uint256 resultUint = y & 1 > 0 ? xUint : uUNIT;

    // Equivalent to `for(y /= 2; y > 0; y /= 2)`.
    for (y >>= 1; y > 0; y >>= 1) {
        xUint = Common.mulDiv18(xUint, xUint);

        // Equivalent to `y % 2 == 1`.
        if (y & 1 > 0) {
            resultUint = Common.mulDiv18(resultUint, xUint);
        }
    }
    result = wrap(resultUint);
}

/// @notice Calculates the square root of x using the Babylonian method.
///
/// @dev See https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Notes:
/// - The result is rounded toward zero.
///
/// Requirements:
/// - x must be less than `MAX_UD60x18 / UNIT`.
///
/// @param x The UD60x18 number for which to calculate the square root.
/// @return result The result as a UD60x18 number.
/// @custom:smtchecker abstract-function-nondet
function sqrt(UD60x18 x) pure returns (UD60x18 result) {
    uint256 xUint = x.unwrap();

    unchecked {
        if (xUint > uMAX_UD60x18 / uUNIT) {
            revert Errors.PRBMath_UD60x18_Sqrt_Overflow(x);
        }
        // Multiply x by `UNIT` to account for the factor of `UNIT` picked up when multiplying two UD60x18 numbers.
        // In this case, the two numbers are both the square root.
        result = wrap(Common.sqrt(xUint * uUNIT));
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.19;

import "./Casting.sol" as Casting;
import "./Helpers.sol" as Helpers;
import "./Math.sol" as Math;

/// @notice The unsigned 60.18-decimal fixed-point number representation, which can have up to 60 digits and up to 18
/// decimals. The values of this are bound by the minimum and the maximum values permitted by the Solidity type uint256.
/// @dev The value type is defined here so it can be imported in all other files.
type UD60x18 is uint256;

/*//////////////////////////////////////////////////////////////////////////
                                    CASTING
//////////////////////////////////////////////////////////////////////////*/

using {
    Casting.intoSD1x18,
    Casting.intoUD2x18,
    Casting.intoSD59x18,
    Casting.intoUint128,
    Casting.intoUint256,
    Casting.intoUint40,
    Casting.unwrap
} for UD60x18 global;

/*//////////////////////////////////////////////////////////////////////////
                            MATHEMATICAL FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

// The global "using for" directive makes the functions in this library callable on the UD60x18 type.
using {
    Math.avg,
    Math.ceil,
    Math.div,
    Math.exp,
    Math.exp2,
    Math.floor,
    Math.frac,
    Math.gm,
    Math.inv,
    Math.ln,
    Math.log10,
    Math.log2,
    Math.mul,
    Math.pow,
    Math.powu,
    Math.sqrt
} for UD60x18 global;

/*//////////////////////////////////////////////////////////////////////////
                                HELPER FUNCTIONS
//////////////////////////////////////////////////////////////////////////*/

// The global "using for" directive makes the functions in this library callable on the UD60x18 type.
using {
    Helpers.add,
    Helpers.and,
    Helpers.eq,
    Helpers.gt,
    Helpers.gte,
    Helpers.isZero,
    Helpers.lshift,
    Helpers.lt,
    Helpers.lte,
    Helpers.mod,
    Helpers.neq,
    Helpers.not,
    Helpers.or,
    Helpers.rshift,
    Helpers.sub,
    Helpers.uncheckedAdd,
    Helpers.uncheckedSub,
    Helpers.xor
} for UD60x18 global;

/*//////////////////////////////////////////////////////////////////////////
                                    OPERATORS
//////////////////////////////////////////////////////////////////////////*/

// The global "using for" directive makes it possible to use these operators on the UD60x18 type.
using {
    Helpers.add as +,
    Helpers.and2 as &,
    Math.div as /,
    Helpers.eq as ==,
    Helpers.gt as >,
    Helpers.gte as >=,
    Helpers.lt as <,
    Helpers.lte as <=,
    Helpers.or as |,
    Helpers.mod as %,
    Math.mul as *,
    Helpers.neq as !=,
    Helpers.not as ~,
    Helpers.sub as -,
    Helpers.xor as ^
} for UD60x18 global;

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (common/CommonEventsAndErrors.sol)

/// @notice A collection of common errors thrown within the Temple contracts
library CommonEventsAndErrors {
    error InsufficientBalance(address token, uint256 required, uint256 balance);
    error InvalidParam();
    error InvalidAddress();
    error InvalidAccess();
    error InvalidAmount(address token, uint256 amount);
    error ExpectedNonZero();
    error Unimplemented();
    event TokenRecovered(address indexed to, address indexed token, uint256 amount);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (common/SafeCast.sol)

library SafeCast {
    error Overflow(uint256 amount);

    function encodeUInt128(uint256 amount) internal pure returns (uint128) {
        if (amount > type(uint128).max) {
            revert Overflow(amount);
        }
        return uint128(amount);
    }
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/access/ITempleElevatedAccess.sol)

/**
 * @notice Inherit to add Executor and Rescuer roles for DAO elevated access.
 */ 
interface ITempleElevatedAccess {
    event ExplicitAccessSet(address indexed account, bytes4 indexed fnSelector, bool indexed value);
    event RescueModeSet(bool indexed value);

    event NewRescuerProposed(address indexed oldRescuer, address indexed oldProposedRescuer, address indexed newProposedRescuer);
    event NewRescuerAccepted(address indexed oldRescuer, address indexed newRescuer);

    event NewExecutorProposed(address indexed oldExecutor, address indexed oldProposedExecutor, address indexed newProposedExecutor);
    event NewExecutorAccepted(address indexed oldExecutor, address indexed newExecutor);

    struct ExplicitAccess {
        bytes4 fnSelector;
        bool allowed;
    }

    /**
     * @notice A set of addresses which are approved to execute emergency operations.
     */ 
    function rescuer() external returns (address);

    /**
     * @notice A set of addresses which are approved to execute normal operations on behalf of the DAO.
     */ 
    function executor() external returns (address);

    /**
     * @notice Explicit approval for an address to execute a function.
     * allowedCaller => function selector => true/false
     */
    function explicitFunctionAccess(address contractAddr, bytes4 functionSelector) external returns (bool);

    /**
     * @notice Under normal circumstances, rescuers don't have access to admin/operational functions.
     * However when rescue mode is enabled (by rescuers or executors), they claim the access rights.
     */
    function inRescueMode() external returns (bool);
    
    /**
     * @notice Set the contract into or out of rescue mode.
     * Only the rescuers or executors are allowed to set.
     */
    function setRescueMode(bool value) external;

    /**
     * @notice Proposes a new Rescuer.
     * Can only be called by the current rescuer.
     */
    function proposeNewRescuer(address account) external;

    /**
     * @notice Caller accepts the role as new Rescuer.
     * Can only be called by the proposed rescuer
     */
    function acceptRescuer() external;

    /**
     * @notice Proposes a new Executor.
     * Can only be called by the current executor or resucer (if in resuce mode)
     */
    function proposeNewExecutor(address account) external;

    /**
     * @notice Caller accepts the role as new Executor.
     * Can only be called by the proposed executor
     */
    function acceptExecutor() external;

    /**
     * @notice Grant `allowedCaller` the rights to call the function selectors in the access list.
     * @dev fnSelector == bytes4(keccak256("fn(argType1,argType2,...)"))
     */
    function setExplicitAccess(address allowedCaller, ExplicitAccess[] calldata access) external;
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/circuitBreaker/ITempleCircuitBreaker.sol)

import { ITempleElevatedAccess } from "contracts/interfaces/v2/access/ITempleElevatedAccess.sol";

/**
 * @title Temple Circuit Breaker
 * 
 * @notice A circuit breaker can perform checks and record state for transactions which have
 * already happened cumulative totals, totals within a rolling period window,
 * sender specific totals, etc.
 */
interface ITempleCircuitBreaker is ITempleElevatedAccess {

    /**
     * @notice Verify the new amount requested for the sender does not breach the
     * cap in this rolling period.
     */
    function preCheck(address onBehalfOf, uint256 amount) external;
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/circuitBreaker/ITempleCircuitBreakerProxy.sol)

import { ITempleElevatedAccess } from "contracts/interfaces/v2/access/ITempleElevatedAccess.sol";
import { ITempleCircuitBreaker } from "contracts/interfaces/v2/circuitBreaker/ITempleCircuitBreaker.sol";

/**
 * @title Temple Circuit Breaker Proxy
 * 
 * @notice Direct circuit breaker requests to the correct underlying implementation,
 * based on a pre-defined bytes32 identifier, and a token.
 */
interface ITempleCircuitBreakerProxy is ITempleElevatedAccess {
    event CircuitBreakerSet(bytes32 indexed identifier, address indexed token, address circuitBreaker);
    event IdentifierForCallerSet(address indexed caller, string identifierString, bytes32 identifier);

    /**
     * @notice A calling contract of the circuit breaker (eg TLC) is mapped to an identifier
     * which means circuit breaker caps can be shared across multiple callers.
     */
    function callerToIdentifier(address) external view returns (bytes32);

    /**
     * @notice The mapping of a (identifier, tokenAddress) tuple to the underlying circuit breaker contract
     */
    function circuitBreakers(
        bytes32 identifier, 
        address token
    ) external view returns (ITempleCircuitBreaker);

    /**
     * @notice Set the identifier for a given caller of the circuit breaker. These identifiers
     * can be shared, such that multiple contracts share the same cap limits for a given token.
     */
    function setIdentifierForCaller(
        address caller, 
        string memory identifierString
    ) external;

    /**
     * @notice Set the address of the circuit breaker for a particular identifier and token
     */
    function setCircuitBreaker(
        bytes32 identifier,
        address token,
        address circuitBreaker
    ) external;

    /**
     * @notice For a given identifier & token, verify the new amount requested for the sender does not breach the
     * cap in this rolling period.
     */
    function preCheck(
        address token,
        address onBehalfOf,
        uint256 amount
    ) external;

    /**
     * @notice The set of all identifiers registered
     */
    function identifiers() external view returns (bytes32[] memory);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/interestRate/IInterestRateModel.sol)

interface IInterestRateModel {
    /**
     * @notice Calculates the current interest rate based on a utilization ratio
     * @param utilizationRatio The utilization ratio scaled to `PRECISION`
     * @return interestRate The interest rate (scaled by PRECISION). 0.05e18 == 5%
     */
    function calculateInterestRate(
        uint256 utilizationRatio
    ) external view returns (uint96 interestRate);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/ITempleDebtToken.sol)

import { IERC20, IERC20Metadata } from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol";
import { ITempleElevatedAccess } from "contracts/interfaces/v2/access/ITempleElevatedAccess.sol";

interface ITempleDebtToken is IERC20, IERC20Metadata, ITempleElevatedAccess {
    error NonTransferrable();
    error CannotMintOrBurn(address caller);

    event BaseInterestRateSet(uint96 rate);
    event RiskPremiumInterestRateSet(address indexed debtor, uint96 rate);
    event AddedMinter(address indexed account);
    event RemovedMinter(address indexed account);
    event DebtorBalance(address indexed debtor, uint128 principal, uint128 baseInterest, uint128 riskPremiumInterest);

    /**
     * @notice Track the deployed version of this contract. 
     */
    function version() external view returns (string memory);

    /**
     * @notice The current (base rate) interest common for all users. This can be updated by governance
     * @dev 1e18 format, where 0.01e18 = 1%
     */
    function baseRate() external view returns (uint96);

    /**
     * @notice The last checkpoint time of the (base rate) principal and interest checkpoint
     */
    function baseCheckpointTime() external view returns (uint32);

    /**
     * @notice The (base rate) total principal and interest owed across all debtors as of the latest checkpoint
     */
    function baseCheckpoint() external view returns (uint128);

    /**
     * @notice The (base rate) total number of shares allocated out to users for internal book keeping
     */
    function baseShares() external view returns (uint128);

    /**
     * @notice The net amount of principal amount of debt minted across all users.
     */
    function totalPrincipal() external view returns (uint128);

    /**
     * @notice The latest estimate of the (risk premium) interest (no principal) owed.
     * @dev Indicative only. This total is only updated on a per strategy basis when that strategy gets 
     * checkpointed (on borrow/repay rate change).
     * So it is generally always going to be out of date as each strategy will accrue interest independently 
     * on different rates.
     */
    function estimatedTotalRiskPremiumInterest() external view returns (uint128);

    /// @dev byte packed into two slots.
    struct Debtor {
        /// @notice The current principal owed by this debtor
        uint128 principal;

        /// @notice The number of this shares this debtor is allocated of the base interest.
        uint128 baseShares;

        /// @notice The current (risk premium) interest rate specific to this debtor. This can be updated by governance
        /// @dev 1e18 format, where 0.01e18 = 1%
        uint96 rate;

        /// @notice The debtor's (risk premium only) interest (no principal or base interest) owed as of the last checkpoint
        uint128 checkpoint;

        /// @notice The last checkpoint time of this debtor's (risk premium) interest
        /// @dev uint32 => max time of Feb 7 2106
        uint32 checkpointTime;
    }

    /**
     * @notice Per address status of debt
     */
    function debtors(address account) external view returns (
        /// @notice The current principal owed by this debtor
        uint128 principal,

        /// @notice The number of this shares this debtor is allocated of the base interest.
        uint128 baseShares,

        /// @notice The current (risk premium) interest rate specific to this debtor. This can be updated by governance
        /// @dev 1e18 format, where 0.01e18 = 1%
        uint96 rate,

        /// @notice The debtor's (risk premium only) interest (no principal or base interest) owed as of the last checkpoint
        uint128 checkpoint,

        /// @notice The last checkpoint time of this debtor's (risk premium) interest
        uint32 checkpointTime
    );

    /// @notice A set of addresses which are approved to mint/burn
    function minters(address account) external view returns (bool);

    /**
     * @notice Governance can add an address which is able to mint or burn debt
     * positions on behalf of users.
     */
    function addMinter(address account) external;

    /**
     * @notice Governance can remove an address which is able to mint or burn debt
     * positions on behalf of users.
     */
    function removeMinter(address account) external;

    /**
     * @notice Governance can update the continuously compounding (base) interest rate of all debtors, from this block onwards.
     */
    function setBaseInterestRate(uint96 _rate) external;

    /**
     * @notice Governance can update the continuously compounding (risk premium) interest rate for a given debtor, from this block onwards
     */
    function setRiskPremiumInterestRate(address _debtor, uint96 _rate) external;

    /**
     * @notice Approved Minters can add a new debt position on behalf of a user.
     * @param _debtor The address of the debtor who is issued new debt
     * @param _mintAmount The notional amount of debt tokens to issue.
     */
    function mint(address _debtor, uint256 _mintAmount) external;

    /**
     * @notice Approved Minters can burn debt on behalf of a user.
     * @dev Interest is repaid in preference:
     *   1/ Firstly to the higher interest rate of (baseRate, debtor risk premium rate)
     *   2/ Any remaining of the repayment is then paid of the other interest amount.
     *   3/ Finally if there is still some repayment amount unallocated, 
     *      then the principal will be paid down. This is like a new debt is issued for the lower balance,
     *      where interest accrual starts fresh.
     * More debt than the user has cannot be burned - it is capped. The actual amount burned is returned
     * @param _debtor The address of the debtor
     * @param _burnAmount The notional amount of debt tokens to repay.
     */
    function burn(address _debtor, uint256 _burnAmount) external returns (uint256 burnedAmount);

    /**
     * @notice Approved Minters can burn the entire debt on behalf of a user.
     * @param _debtor The address of the debtor
     */
    function burnAll(address _debtor) external returns (uint256 burnedAmount);

    /**
     * @notice Checkpoint the base interest owed by all debtors up to this block.
     */
    function checkpointBaseInterest() external returns (uint256);

    /**
     * @notice Checkpoint a debtor's (risk premium) interest (no principal) owed up to this block.
     */
    function checkpointDebtorInterest(address debtor) external returns (uint256);

    /**
     * @notice Checkpoint multiple accounts (risk premium) interest (no principal) owed up to this block.
     * @dev Provided in case there needs to be block synchronisation on the total debt.
     */
    function checkpointDebtorsInterest(address[] calldata _debtors) external;

    struct DebtOwed {
        uint256 principal;
        uint256 baseInterest;
        uint256 riskPremiumInterest;
    }

    /**
     * @notice The current debt for a given user split out by
     * principal, base interest, risk premium (per debtor) interest
     */
    function currentDebtOf(address _debtor) external view returns (
        DebtOwed memory debtOwed
    );

    /**
     * @notice The current debt for a given set of users split out by
     * principal, base interest, risk premium (per debtor) interest
     */
    function currentDebtsOf(address[] calldata _debtors) external view returns (
        DebtOwed[] memory debtsOwed
    );

    /**
      * @notice The current total principal + total base interest, total (estimate) debtor specific risk premium interest owed by all debtors.
      * @dev Note the (total principal + total base interest) portion is up to date.
      * However the (debtor specific risk premium interest) portion is likely stale.
      * The `estimatedTotalDebtorInterest` is only updated when each debtor checkpoints, so it's going to be out of date.
      * For more up to date current totals, off-chain aggregation of balanceOf() will be required - eg via subgraph.
      */
    function currentTotalDebt() external view returns (
        DebtOwed memory debtOwed
    );

    /**
     * @notice Convert a (base interest) debt amount into proportional amount of shares
     */
    function baseDebtToShares(uint128 debt) external view returns (uint128);

    /**
     * @notice Convert a number of (base interest) shares into proportional amount of debt
     */
    function baseSharesToDebt(uint128 shares) external view returns (uint128);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/ITreasuryPriceIndexOracle.sol)

import { ITempleElevatedAccess } from "contracts/interfaces/v2/access/ITempleElevatedAccess.sol";

/**
 * @title Treasury Price Index Oracle
 * @notice The custom oracle (not dependant on external markets/AMMs/dependencies) to give the
 * Treasury Price Index, representing the target Treasury Value per token.
 * This rate is updated manually with elevated permissions. The new TPI doesn't take effect until after a cooldown.
 */
interface ITreasuryPriceIndexOracle is ITempleElevatedAccess {
    event TreasuryPriceIndexSet(uint96 oldTpi, uint96 newTpi);
    event TpiCooldownSet(uint32 cooldownSecs);
    event MaxTreasuryPriceIndexDeltaSet(uint256 maxDelta);

    error BreachedMaxTpiDelta(uint96 oldTpi, uint96 newTpi, uint256 maxDelta);

    /**
     * @notice The current Treasury Price Index (TPI) value
     * @dev If the TPI has just been updated, the old TPI will be used until `cooldownSecs` has elapsed
     */
    function treasuryPriceIndex() external view returns (uint96);

    /**
     * @notice The maximum allowed TPI change on any single `setTreasuryPriceIndex()`, in absolute terms.
     * @dev Used as a bound to avoid unintended/fat fingering when updating TPI
     */
    function maxTreasuryPriceIndexDelta() external view returns (uint256);

    /**
     * @notice The current internal TPI data along with when it was last reset, and the prior value
     */
    function tpiData() external view returns (
        uint96 currentTpi,
        uint96 previousTpi,
        uint32 lastUpdatedAt,
        uint32 cooldownSecs
    );

    /**
     * @notice Set the Treasury Price Index (TPI)
     */
    function setTreasuryPriceIndex(uint96 value) external;

    /**
     * @notice Set the number of seconds to elapse before a new TPI will take effect.
     */
    function setTpiCooldown(uint32 cooldownSecs) external;

    /**
     * @notice Set the maximum allowed TPI change on any single `setTreasuryPriceIndex()`, in absolute terms.
     * @dev 18 decimal places, 0.20e18 == $0.20
     */
    function setMaxTreasuryPriceIndexDelta(uint256 maxDelta) external;

    /**
     * @notice The decimal precision of Temple Price Index (TPI)
     * @dev 18 decimals, so 1.02e18 == $1.02
     */
    // solhint-disable-next-line func-name-mixedcase
    function TPI_DECIMALS() external view returns (uint256);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/ITreasuryReservesVault.sol)

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import { ITempleDebtToken } from "contracts/interfaces/v2/ITempleDebtToken.sol";
import { ITempleStrategy } from "contracts/interfaces/v2/strategies/ITempleStrategy.sol";
import { ITempleBaseStrategy } from "contracts/interfaces/v2/strategies/ITempleBaseStrategy.sol";
import { ITempleElevatedAccess } from "contracts/interfaces/v2/access/ITempleElevatedAccess.sol";
import { ITreasuryPriceIndexOracle } from "contracts/interfaces/v2/ITreasuryPriceIndexOracle.sol";

/**
 * @title Treasury Reserves Vault (TRV)
 *
 * @notice Temple has various strategies which utilise the treasury funds to generate 
 * gains for token holders.
 * 
 * The maximum amount of funds allocated to each strategy is determined by governance, 
 * and then each strategy can borrow/repay as required (up to the cap).
 * 
 * When strategies borrow funds, they are issued `dToken`, an accruing debt token representing
 * the debt to the temple treasury. This is used to compare strategies performance, where
 * we can determine an equity value (assets - debt).
 *
 *    Strategies can borrow different types of tokens from the TRV, and are minted equivalent internal debt tokens eg:
 *      DAI => minted dUSD
 *      TEMPLE => minted dTEMPLE
 *      ETH => minted dETH
 *   
 *   Each of the dTokens are compounding at different risk free rates, eg:
 *      dUSD: At DAIs Savings Rate (DSR)
 *      dTEMPLE: 0% interest (no opportunity cost)
 *      dETH: ~avg LST rate
 *   
 *   And so each token which can be borrowed has separate config on how to pull/deposit idle funds.
 *   For example, this may be:
 *      DAI => DSR base strategy
 *      TEMPLE => direct Temple mint/burn 
 *      ETH => just hold in a vault
 */
interface ITreasuryReservesVault is ITempleElevatedAccess {
    event GlobalPausedSet(bool borrow, bool repay);
    event StrategyPausedSet(address indexed strategy, bool borrow, bool repay);

    event StrategyAdded(address indexed strategy, int256 underperformingEquityThreshold);
    event StrategyRemoved(address indexed strategy);
    event DebtCeilingUpdated(address indexed strategy, address indexed token, uint256 oldDebtCeiling, uint256 newDebtCeiling);
    event UnderperformingEquityThresholdUpdated(address indexed strategy, int256 oldThreshold, int256 newThreshold);
    event StrategyIsShuttingDownSet(address indexed strategy, bool isShuttingDown);
    event StrategyShutdownCreditAndDebt(address indexed strategy, address indexed token, uint256 outstandingCredit, uint256 outstandingDebt);
    event StrategyCreditAndDebtBalance(address indexed strategy, address indexed token, uint256 credit, uint256 debt);

    event BorrowTokenSet(address indexed token, address baseStrategy, uint256 baseStrategyWithdrawalBuffer, uint256 baseStrategyDepositThreshold, address dToken);
    event BorrowTokenRemoved(address indexed token);

    event Borrow(address indexed strategy, address indexed token, address indexed recipient, uint256 amount);
    event Repay(address indexed strategy, address indexed token, address indexed from, uint256 amount);

    event TpiOracleSet(address indexed tpiOracle);

    error BorrowTokenNotEnabled();
    error StrategyNotEnabled();

    error AlreadyEnabled();
    error BorrowPaused();
    error RepaysPaused();
    error StrategyIsShutdown();
    error DebtCeilingBreached(uint256 available, uint256 borrowAmount);
    error NotShuttingDown();

    struct BorrowTokenConfig {
        /**
         * @notice The base strategy used to hold idle treasury funds
         */
        ITempleBaseStrategy baseStrategy;

        /**
         * @notice A buffer of tokens are maintained in the TRV such that it doesn't have to churn through small base strategy
         * deposits/withdrawals. 
         * On a borrow if tokens need to be pulled from the base strategy, more than the requested amount is withdrawn such that
         * this extra buffer of tokens ends up in the TRV
         */
        uint256 baseStrategyWithdrawalBuffer;

        /**
         * @notice When repayments are made to the TRV, tokens are only deposited into the base strategy once this threshold is met.
         * The amount deposited will ensure that the `baseStrategyWithdrawalBuffer` amount remains in the TRV
         */
        uint256 baseStrategyDepositThreshold;

        /**
         * @notice The address of the internal debt token for this borrow token
         * @dev eg Temple => dTEMPLE, DAI => dUSD
         */
        ITempleDebtToken dToken;
    }
    
    struct StrategyConfig {
        /**
         * @notice Pause borrows
         */
        bool borrowPaused;

        /**
         * @notice Pause repayments
         */
        bool repaysPaused;

        /**
         * @notice Governance nominates this strategy to be shutdown.
         * The strategy executor then needs to unwind (may be manual) 
         * and the strategy needs to then call shutdown() when ready.
         */
        bool isShuttingDown;

        /**
         * @notice Each strategy will have a different threshold of expected performance.
         * This underperforming threshold is used for reporting to determine if the strategy is underperforming.
         */
        int256 underperformingEquityThreshold;

        /**
         * @notice The strategy can borrow up to this limit of accrued debt for each token.
         * The `dToken` is minted on any borrows 1:1 (which then accrues interest)
         * When a strategy repays, the `dToken` is burned 1:1
         */
        mapping(IERC20 => uint256) debtCeiling;

        /**
         * @notice The tokens that this strategy is allowed to borrow from TRV
         * @dev This must be one of the configured Borrow Tokens
         */
        mapping(IERC20 => bool) enabledBorrowTokens;
    }

    /**
     * @notice True if all borrows are paused for all strategies.
     */
    function globalBorrowPaused() external view returns (bool);

    /**
     * @notice True if all repayments are paused for all strategies.
     */
    function globalRepaysPaused() external view returns (bool);

    /**
     * @notice The configuration for a given strategy
     */
    function strategies(address strategy) external view returns (
        bool borrowPaused,
        bool repaysPaused,
        bool isShuttingDown,
        int256 underperformingEquityThreshold
    );

    /**
     * @notice The list of all strategies currently added to the TRV
     */
    function strategiesList() external view returns (address[] memory);

    /**
     * @notice The configuration for a given token which can be borrowed by strategies
     */
    function borrowTokens(IERC20 token) external view returns (
        ITempleBaseStrategy baseStrategy,
        uint256 baseStrategyWithdrawalBuffer,
        uint256 baseStrategyDepositThreshold,
        ITempleDebtToken dToken
    );

    /**
     * @notice The list of all tokens which can be borrowed by the TRV
     */
    function borrowTokensList() external view returns (address[] memory);

    /**
     * @notice When strategies repay a token which covers more than their dToken debt for the token
     * They receive credits. When they next need to borrow tokens this credit is used prior to
     * issuing more dTokens
     */
    function strategyTokenCredits(address strategy, IERC20 token) external view returns (uint256);

    /**
     * @notice The Treasury Price Index Oracle
     */
    function tpiOracle() external view returns (ITreasuryPriceIndexOracle);

    /**
     * @notice Set the Treasury Price Index (TPI) Oracle
     */
    function setTpiOracle(address tpiOracleAddress) external;

    /**
     * @notice The Treasury Price Index - the target price of the Treasury, in `stableToken` terms.
     */
    function treasuryPriceIndex() external view returns (uint96);

    /**
     * @notice API version to help with future integrations/migrations
     */
    function apiVersion() external pure returns (string memory);

    /**
     * @notice Set the borrow token configuration. 
     * @dev This can either add a new token or update an existing token.
     */
    function setBorrowToken(
        IERC20 token, 
        address baseStrategy,
        uint256 baseStrategyWithdrawalBuffer,
        uint256 baseStrategyDepositThreshold,
        address dToken
    ) external;

    /**
     * @notice Enable and/or disable tokens which a strategy can borrow from the (configured) TRV borrow tokens
     */
    function updateStrategyEnabledBorrowTokens(
        address strategy, 
        IERC20[] calldata enableBorrowTokens, 
        IERC20[] calldata disableBorrowTokens
    ) external;

    /**
     * @notice Remove the borrow token configuration. 
     */
    function removeBorrowToken(
        IERC20 token
    ) external;

    /**
     * @notice A helper to collate information about a given strategy for reporting purposes.
     * @dev Note the current assets may not be 100% up to date, as some strategies may need to checkpoint based
     * on the underlying strategy protocols (eg DSR for DAI would need to checkpoint to get the latest valuation).
     */
    function strategyDetails(address strategy) external view returns (
        string memory name,
        string memory version,
        bool borrowPaused,
        bool repaysPaused,
        bool isShuttingDown,
        int256 underperformingEquityThreshold,
        ITempleStrategy.AssetBalance[] memory debtCeiling
    );

    /**
     * @notice A strategy's current asset balances, any manual adjustments and the current debt
     * of the strategy.
     * 
     * This will be used to report equity performance: `sum($assetValue +- $manualAdj) - debt`
     * The conversion of each asset price into the stable token (eg DAI) will be done off-chain
     * along with formulating the union of asset balances and manual adjustments
     */
    function strategyBalanceSheet(address strategyAddr) external view returns (
        ITempleStrategy.AssetBalance[] memory assetBalances,
        ITempleStrategy.AssetBalanceDelta[] memory manualAdjustments, 
        ITempleStrategy.AssetBalance[] memory dTokenBalances,
        ITempleStrategy.AssetBalance[] memory dTokenCreditBalances
    );

    /**
     * @notice The current max debt ceiling that a strategy is allowed to borrow up to.
     */
    function strategyDebtCeiling(address strategy, IERC20 token) external view returns (uint256);
    
    /**
     * @notice Whether a token is enabled to be borrowed for a given strategy
     */
    function strategyEnabledBorrowTokens(address strategy, IERC20 token) external view returns (bool);

    /**
     * @notice The total available stables, both as a balance in this contract and
     * any available to withdraw from the baseStrategy
     */
    function totalAvailable(IERC20 token) external view returns (uint256);

    /**
     * @notice The amount remaining that a strategy can borrow for a given token
     * taking into account: the approved debt ceiling, current dToken debt, and any credits
     * @dev available == min(ceiling - debt + credit, 0)
     */
    function availableForStrategyToBorrow(
        address strategy, 
        IERC20 token
    ) external view returns (uint256);

    /**
     * @notice Pause all strategy borrow and repays
     */
    function setGlobalPaused(bool borrow, bool repays) external;

    /**
     * @notice Set whether borrows and repayments are paused for a given strategy.
     */
    function setStrategyPaused(address strategy, bool borrow, bool repays) external;

    /**
     * @notice Register a new strategy which can borrow tokens from Treasury Reserves
     */
    function addStrategy(
        address strategy, 
        int256 underperformingEquityThreshold,
        ITempleStrategy.AssetBalance[] calldata debtCeiling
    ) external;

    /**
     * @notice Update the debt ceiling for a given strategy
     */
    function setStrategyDebtCeiling(address strategy, IERC20 token, uint256 newDebtCeiling) external;

    /**
     * @notice Update the underperforming equity threshold.
     */
    function setStrategyUnderperformingThreshold(address strategy, int256 underperformingEquityThreshold) external;

    /**
     * @notice The first step in a two-phase shutdown. Executor first sets whether a strategy is slated for shutdown.
     * The strategy then needs to call shutdown as a separate call once ready.
     */
    function setStrategyIsShuttingDown(address strategy, bool isShuttingDown) external;

    /**
     * @notice The second step in a two-phase shutdown. A strategy (automated) or executor (manual) calls
     * to effect the shutdown. isShuttingDown must be true for the strategy first.
     * The strategy executor is responsible for unwinding all it's positions first and repaying the debt to the TRV.
     * All outstanding dToken debt is burned, leaving a net gain/loss of equity for the shutdown strategy.
     */
    function shutdown(address strategy) external;   

    /**
     * @notice A strategy calls to request more funding.
     * @dev This will revert if the strategy requests more stables than it's able to borrow.
     * `dToken` will be minted 1:1 for the amount of stables borrowed
     */
    function borrow(IERC20 token, uint256 borrowAmount, address recipient) external;

    /**
     * @notice A strategy calls to request the most funding it can.
     * @dev This will revert if the strategy requests more stables than it's able to borrow.
     * `dToken` will be minted 1:1 for the amount of stables borrowed
     */
    function borrowMax(IERC20 token, address recipient) external returns (uint256);

    /**
     * @notice A strategy calls to paydown it's debt
     * This will pull the stables, and will burn the equivalent amount of dToken from the strategy.
     */
    function repay(IERC20 token, uint256 repayAmount, address strategy) external;

    /**
     * @notice A strategy calls to paydown all of it's debt
     * This will pull the stables for the entire dToken balance of the strategy, and burn the dToken.
     */
    function repayAll(IERC20 token, address strategy) external returns (uint256 amountRepaid);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/strategies/ITempleBaseStrategy.sol)

import { ITempleStrategy } from "contracts/interfaces/v2/strategies/ITempleStrategy.sol";

/**
 * @title Temple Base Strategy
 * @notice A special Temple Strategy which is eligable to transiently apply capital
 * into a very safe yield bearing protocol (eg DAI Savings Rate).
 * 
 * The Treasury Reserves Vault will have permission to pull back funds from this strategy
 * at any time, for example when another strategy wants to borrow funds.
 */
interface ITempleBaseStrategy {
    /**
     * @notice The latest checkpoint of each asset balance this strategy holds.
     *
     * @dev The asset value may be stale at any point in time, depending on the strategy. 
     * It may optionally implement `checkpointAssetBalances()` in order to update those balances.
     */
    function latestAssetBalances() external view returns (ITempleStrategy.AssetBalance[] memory assetBalances);

    /**
     * @notice The same as `borrowMax()` but for a pre-determined amount to borrow,
     * such that something upstream/off-chain can determine the amount.
     */
    function borrowAndDeposit(uint256 amount) external;

    /**
     * @notice When the TRV has a surplus of funds (over the configured buffer threshold)
     * it will transfer tokens to the base strategy, and call this function to apply
     * the new captial.
     */
    function trvDeposit(uint256 amount) external;

    /**
     * @notice The TRV is able to withdraw on demand in order to fund other strategies which 
     * wish to borrow from the TRV.
     * @dev It may withdraw less than requested if there isn't enough balance in the DSR.
     */
    function trvWithdraw(uint256 requestedAmount) external returns (uint256 amountWithdrawn);

}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/strategies/ITempleStrategy.sol)

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import { ITreasuryReservesVault } from "contracts/interfaces/v2/ITreasuryReservesVault.sol";
import { ITempleElevatedAccess } from "contracts/interfaces/v2/access/ITempleElevatedAccess.sol";

/**
 * @title Temple Strategy
 * @notice The Temple Strategy is responsible for borrowing funds from the Treasury Reserve Vault
 * and generating positive equity from that capital.
 * 
 * When it borrows funds it is issued systematic debt (`dToken`) which accrues interest at a common base rate
 * plus a risk premium rate specific to this strategy, agreed and set by governance.
 *
 * The strategy reports it's assets (total available funds in investments)
 * in order to report the equity of the strategy -- ie a comparable performance metric across all strategy's.
 *
 * The Strategy Executor role is responsible for applying the capital within the strategy, and can borrow funds from
 * the TRV up to a cap (set by governance). Similarly the Executor is responsible for operations - borrow/repay/liquidate/etc.
 *
 * The strategy can be shutdown - first by Executors giving the go-ahead by setting it to `isShuttingDown` in the TRV
 * and then the Executor can either:
 *   a/ Graceful shutdown, where any liquidation can happen automatically
 *   b/ Force shutdown, where the Executor needs to handle any liquidations manually and send funds back to Treasury first.
 */
interface ITempleStrategy is ITempleElevatedAccess {
    struct AssetBalance {
        address asset;
        uint256 balance;
    }

    struct AssetBalanceDelta {
        address asset;
        int256 delta;
    }

    event TreasuryReservesVaultSet(address indexed trv);
    event Shutdown();
    event AssetBalancesCheckpoint(AssetBalance[] assetBalances);
    event ManualAdjustmentsSet(AssetBalanceDelta[] adjustments);
    event TokenAllowanceSet(address token, address spender, uint256 amount);
    
    error InvalidVersion(string expected, string actual);
    error OnlyTreasuryReserveVault(address caller);

    /**
     * @notice API version to help with future integrations/migrations
     */
    function apiVersion() external view returns (string memory);

    /**
     * @notice A human readable name of the strategy
     */
    function strategyName() external view returns (string memory);

    /**
     * @notice The version of this particular strategy
     */
    function strategyVersion() external view returns (string memory);

    /**
     * @notice The address of the treasury reserves vault.
     */
    function treasuryReservesVault() external view returns (ITreasuryReservesVault);

    /**
     * @notice Executors can set the address of the treasury reserves vault.
     */
    function setTreasuryReservesVault(address _trv) external;

    /**
     * @notice The Strategy Executor may set manual adjustments to asset balances
     * if they cannot be reported automatically - eg a staked position with no receipt token.
     */
    function setManualAdjustments(AssetBalanceDelta[] calldata adjustments) external;

    /**
     * @notice Get the set of manual asset balance deltas, set by the Strategy Executor.
     */
    function manualAdjustments() external view returns (AssetBalanceDelta[] memory adjustments);

    /**
     * @notice The latest checkpoint of each asset balance this strategy holds.
     *
     * @dev The asset value may be stale at any point in time, depending on the strategy. 
     * It may optionally implement `checkpointAssetBalances()` in order to update those balances.
     */
    function latestAssetBalances() external view returns (AssetBalance[] memory assetBalances);

    /**
     * @notice By default, we assume there is no checkpoint required for a strategy
     * In which case it would be identical to just calling `latestAssetBalances()`
     *
     * A strategy can override this if on-chain functions are required to run to force balance
     * updates first - eg checkpoint DSR
     */
    function checkpointAssetBalances() external returns (AssetBalance[] memory assetBalances);

    /**
     * @notice populate data required for shutdown - for example quote data.
     * This may/may not be required in order to do a shutdown. For example to avoid frontrunning/MEV
     * quotes to exit an LP position may need to be obtained off-chain prior to the actual shutdown.
     * Each strategy can abi encode params that it requires.
     * @dev Intentionally not a view - as some quotes require a non-view (eg Balancer)
     * The intention is for clients to call as 'static', like a view
     */
    function populateShutdownData(bytes calldata populateParamsData) external returns (bytes memory shutdownParamsData);

    /**
     * @notice The strategy executor can shutdown this strategy, only after Executors have
     * marked the strategy as `isShuttingDown` in the TRV.
     * This should handle all liquidations and send all funds back to the TRV, and will then call `TRV.shutdown()`
     * to apply the shutdown.
     * @dev Each strategy may require a different set of params to do the shutdown. It can abi encode/decode
     * that data off chain, or by first calling populateShutdownData()
     */
    function automatedShutdown(bytes calldata shutdownParamsData) external;

    /**
     * @notice Executors can recover any token from the strategy.
     */
    function recoverToken(address token, address to, uint256 amount) external;

    /**
     * @notice Executors can set the allowance of any token spend from the strategy
     */
    function setTokenAllowance(IERC20 token, address spender, uint256 amount) external;

    /**
     * @notice A hook which is called by the Treasury Reserves Vault when the debt ceiling
     * for this strategy is updated
     * @dev by default it's a no-op unless the strategy implements `_debtCeilingUpdated()`
     */
    function debtCeilingUpdated(IERC20 token, uint256 newDebtCeiling) external;
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/strategies/ITlcStrategy.sol)

import { ITempleStrategy } from "contracts/interfaces/v2/strategies/ITempleStrategy.sol";

/**
 * @title Temple Line of Credit Strategy
 * @notice A simple wrapper strategy over TLC, where
 * the assets is the current total user debt.
 */
interface ITlcStrategy is ITempleStrategy {
    /**
     * @notice TLC (only) will call on this to fund user borrows of DAI
     */
    function fundFromTrv(uint256 amount, address recipient) external;
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/templeLineOfCredit/ITempleLineOfCredit.sol)

import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import { ITlcEventsAndErrors } from "contracts/interfaces/v2/templeLineOfCredit/ITlcEventsAndErrors.sol";
import { ITlcDataTypes } from "contracts/interfaces/v2/templeLineOfCredit/ITlcDataTypes.sol";
import { ITreasuryReservesVault } from "contracts/interfaces/v2/ITreasuryReservesVault.sol";
import { ITlcStrategy } from "contracts/interfaces/v2/strategies/ITlcStrategy.sol";
import { ITempleCircuitBreakerProxy } from "contracts/interfaces/v2/circuitBreaker/ITempleCircuitBreakerProxy.sol";

/**
 * @title Temple Line of Credit (TLC)
 * @notice Users supply Temple as collateral, and can then borrow DAI.
 * 
 * Temple is valued at the Temple Treasury Price Index (TPI)
 * User debt increases at a continuously compounding rate.
 * Liquidations occur when users LTV exceeds the maximum allowed.
 */
interface ITempleLineOfCredit is ITlcDataTypes, ITlcEventsAndErrors {
    /**
     * @notice Deposit Temple as collateral
     * @param collateralAmount The amount to deposit
     * @param onBehalfOf An account can add collateral on behalf of another address.
     */
    function addCollateral(uint128 collateralAmount, address onBehalfOf) external;

    /**
     * @notice Remove Temple collateral. (active borrow positions are not allowed to go above the max LTV)
     * @param amount The amount of collateral to remove
     * @param recipient Send the Temple collateral to a specified recipient address.
     */
    function removeCollateral(uint128 amount, address recipient) external;

    /**
     * @notice Borrow DAI (not allowed to borrow over the max LTV)
     * @param amount The amount to borrow
     * @param recipient Send the borrowed token to a specified recipient address.
     */
    function borrow(uint128 amount, address recipient) external;

    /**
     * @notice An account repays some of its DAI debt
     * @param repayAmount The amount to repay. Cannot be more than the current debt.
     * @param onBehalfOf Another address can repay the debt on behalf of someone else
     */
    function repay(uint128 repayAmount, address onBehalfOf) external;
    
    /**
     * @notice An account repays all of its DAI debt
     * @dev The amount of debt is calculated as of this block.
     * @param onBehalfOf Another address can repay the debt on behalf of someone else
     */
    function repayAll(address onBehalfOf) external;

    /**
     * @notice Liquidate one or more accounts which have exceeded the 
     * maximum allowed LTV.
     * The Temple collateral is seized, and the accounts debt wiped.
     * @dev If one of the accounts in the batch hasn't exceeded the max LTV
     * then no action is performed for that account.
     */
    function batchLiquidate(
        address[] calldata accounts
    ) external returns (
        uint128 totalCollateralClaimed,
        uint128 totalDaiDebtWiped
    );

    /**
     * @notice New borrows of DAI may be paused in an emergency to protect user funds
     */
    function setBorrowPaused(bool isPaused) external;

    /**
     * @notice Liquidations may be paused in order for users to recover/repay debt after emergency
     * actions
     */
    function setLiquidationsPaused(bool isPaused) external;

    /**
     * @notice Set the minimum amount of Temple which must be borrowed on each call.
     */
    function setMinBorrowAmount(uint128 amount) external;

    /**
     * @notice Update the TLC Strategy contract, and Treasury Reserves Vault (TRV)
     * @dev The TRV is granted access to spend DAI, in order to repay debt.
     */
    function setTlcStrategy(address _tlcStrategy) external;
    
    /**
     * @notice Update the interest rate model contract for DAI borrows
     * @param interestRateModel The contract address of the new model
     */
    function setInterestRateModel(address interestRateModel) external;
    
    /**
     * @notice Set the maximum Loan To Value Ratio allowed for DAI borrows before the position is liquidated
     * @param maxLtvRatio The max LTV ratio (18 decimal places)
     */
    function setMaxLtvRatio(uint256 maxLtvRatio) external;
    
    /**
     * @notice Elevated access can recover tokens accidentally sent to this contract
     * No user Temple collateral can be taken.
     */
    function recoverToken(address token, address to, uint256 amount) external;

    /**
     * @notice Update and checkpoint the total debt up until now
     * Then recalculate the interest rate based on the updated utilisation ratio.
     */
    function refreshInterestRates() external;
    
    /**
     * @notice The collateral token supplied by users/accounts
     */
    function templeToken() external view returns (IERC20);
    
    /**
     * @notice DAI token -- the debt token which can be borrowed
     */
    function daiToken() external view returns (IERC20);

    /**
     * @notice The Treasury Reserve Vault (TRV) which funds the DAI borrows to users/accounts.
     * - When users borrow, the DAI is pulled from the TRV
     *      (via the TlcStrategy, increasing the dUSD debt)
     * - When users repay, the DAI is repaid to the TRV 
     *      (reducing the dUSD debt of the TlcStrategy)
     * - When there is a liquidation, the seized Temple collateral is paid to the TRV
     *      (reducing the dTEMPLE debt of the TlcStrategy)
     */
    function treasuryReservesVault() external view returns (ITreasuryReservesVault);

    /**
     * @notice The Strategy contract managing the TRV borrows and equity positions of TLC.
     */
    function tlcStrategy() external view returns (ITlcStrategy);

    /**
     * @notice A record of the total amount of collateral deposited by users/accounts.
     */
    function totalCollateral() external view returns (uint256);

    /**
     * @notice Liquidations may be paused in order for users to recover/repay debt after emergency
     * actions
     */
    function liquidationsPaused() external view returns (bool);

    /**
     * @notice The minimum borrow amount per transaction
     * @dev It costs gas to liquidate users, so we don't want dust amounts.
     */
    function minBorrowAmount() external view returns (uint128);

    /**
     * @notice An view of an accounts current and up to date position as of this block
     * @param account The account to get a position for
     */
    function accountPosition(
        address account
    ) external view returns (
        AccountPosition memory position
    );

    /**
     * @notice Get the current total DAI debt position across all accounts
     * as of this block.
     */
    function totalDebtPosition() external view returns (
        TotalDebtPosition memory daiPosition
    );

    /**
     * @notice Compute the liquidity status for a set of accounts.
     * @dev This can be used to verify if accounts can be liquidated or not.
     * @param accounts The accounts to get the status for.
     */
    function computeLiquidity(
        address[] calldata accounts
    ) external view returns (LiquidationStatus[] memory status);

    /**
     * @notice A view of the last checkpoint of account data (not as of this block)
     */
    function accountData(
        address account
    ) external view returns (AccountData memory data);

    /**
     * @notice Configuration and latest data snapshot of the DAI debt token
     */
    function debtTokenDetails() external view returns (
        DebtTokenConfig memory config, 
        DebtTokenData memory data
    );

    /**
     * @notice New borrows and collateral withdrawals are checked against a circuit breaker
     * to ensure no more than a cap is withdrawn in a given period
     */
    function circuitBreakerProxy() external view returns (ITempleCircuitBreakerProxy);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/templeLineOfCredit/ITlcDataTypes.sol)

import { IInterestRateModel } from "contracts/interfaces/v2/interestRate/IInterestRateModel.sol";

interface ITlcDataTypes {
    /// @notice Configuration of the DAI Debt Token
    struct DebtTokenConfig {
        /// @notice Maximum Loan To Value (LTV) ratio an account can have before being liquidated
        uint96 maxLtvRatio;

        /// @notice The borrow interest rate model contract
        IInterestRateModel interestRateModel;

        /// @notice Pause new borrows
        bool borrowsPaused;
    }

    /// @notice The latest checkpoint of Debt Token data
    /// @dev Packed slot: 32 + 128 + 96 = 256
    struct DebtTokenData {
        /// @notice The last time the debt was updated for this token
        uint32 interestAccumulatorUpdatedAt;

        /// @notice Total amount of debt which has been borrowed across all users
        uint128 totalDebt;

        /// @notice The last calculated borrow interest rate
        uint96 interestRate;

        /// @notice The accumulator index used to track the compounding of debt.
        uint256 interestAccumulator;
    }

    /// @notice The record of an account's collateral, requests
    /// and DAI debt data
    /// @dev Packed slots: (128 + 128), (128 + 128), (128 +  64 + 64)
    struct AccountData {
        /// @notice The amount of collateral the account has posted
        uint128 collateral;
        
        /** 
         * @notice A checkpoint of user debt, updated after a borrow/repay/liquidation
         * @dev Debt as of now =  (
         *    `account.debtCheckpoint` *
         *    `debtTokenData.interestAccumulator` / 
         *    `account.interestAccumulator`
         * )
         */
        uint128 debtCheckpoint;

        /// @notice The account's last interest accumulator checkpoint
        uint256 interestAccumulator;
    }

    /// @notice The status for whether an account can be liquidated or not
    struct LiquidationStatus {
        /// @notice True if the DAI borrow position has exceeded the max LTV
        /// in which case it can be liquidated
        bool hasExceededMaxLtv;

        /// @notice The amount of collateral which has been provided by the user
        uint128 collateral;

        /// @notice The value of collateral (amount * TPI) which has been provided by the user
        uint256 collateralValue;

        /// @notice The amount of DAI debt as of this block
        uint128 currentDebt;
    }
    
    /// @notice An account's collateral and DAI debt position
    struct AccountPosition {
        /// @notice The amount (not the value) of collateral which has been provided by the user
        uint128 collateral;

        /// @notice The amount of DAI debt as of this block
        uint128 currentDebt;

        /// @notice The maximum amount this account can borrow given the collateral posted.
        /// @dev Note if this max is actually borrowed then it will immediately be liquidated as 1 block
        /// of interest will tip it over the max allowed LTV
        uint128 maxBorrow;

        /// @notice The health factor of this accounts position. Anything less than 1 can be liquidated.
        uint256 healthFactor;

        /// @notice The current LTV ratio of this account
        uint256 loanToValueRatio;
    }

    /// @notice The total DAI debt position metrics across all accounts
    struct TotalDebtPosition {
        /// @notice The utilization rate as of the last checkpoint
        uint256 utilizationRatio;

        // @notice The borrow interest rate as of the last checkpoint
        uint256 borrowRate;

        // @notice The total debt across all accounts as of this block
        uint256 totalDebt;
    }
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (interfaces/v2/templeLineOfCredit/ITlcEventsAndErrors.sol)

interface ITlcEventsAndErrors {
    error ExceededMaxLtv(uint256 collateralAmount, uint256 collateralValue, uint256 currentDaiDebt);
    error ExceededBorrowedAmount(uint256 totalDebtAmount, uint256 repayAmount);
    error InsufficientAmount(uint256 required, uint256 provided);
    error Paused();

    event TlcStrategySet(address indexed strategy, address indexed treasuryReservesVault);
    event InterestRateModelSet(address indexed interestRateModel);
    event MaxLtvRatioSet(uint256 maxLtvRatio);
    event CollateralAdded(address indexed fundedBy, address indexed onBehalfOf, uint128 collateralAmount);
    event CollateralRemoved(address indexed account, address indexed recipient, uint128 collateralAmount);
    event Borrow(address indexed account, address indexed recipient, uint128 amount);
    event Repay(address indexed fundedBy, address indexed onBehalfOf, uint128 repayAmount);
    event Liquidated(address indexed account, uint128 collateralSeized, uint256 collateralValue, uint128 daiDebtWiped);
    event InterestRateUpdate(uint96 newInterestRate);
    event BorrowPausedSet(bool isPaused);
    event LiquidationsPausedSet(bool isPaused);
    event MinBorrowAmountSet(uint128 amount);
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (v2/access/TempleElevatedAccess.sol)

import { ITempleElevatedAccess } from "contracts/interfaces/v2/access/ITempleElevatedAccess.sol";
import { CommonEventsAndErrors } from "contracts/common/CommonEventsAndErrors.sol";

/**
 * @notice Inherit to add Executor and Rescuer roles for DAO elevated access.
 */ 
abstract contract TempleElevatedAccess is ITempleElevatedAccess {
    /**
     * @notice The address which is approved to execute emergency operations.
     */ 
    address public override rescuer;

    /**
     * @notice The address which is approved to execute normal operations on behalf of the DAO.
     */ 
    address public override executor;

    /**
     * @notice Explicit approval for an address to execute a function.
     * allowedCaller => function selector => true/false
     */
    mapping(address => mapping(bytes4 => bool)) public override explicitFunctionAccess;

    /**
     * @notice Under normal circumstances, rescuers don't have access to admin/operational functions.
     * However when rescue mode is enabled (by rescuers or executors), they claim the access rights.
     */
    bool public override inRescueMode;

    /// @dev Track proposed rescuer/executor
    address private _proposedNewRescuer;
    address private _proposedNewExecutor;

    constructor(address initialRescuer, address initialExecutor) {
        if (initialRescuer == address(0)) revert CommonEventsAndErrors.InvalidAddress();
        if (initialExecutor == address(0)) revert CommonEventsAndErrors.InvalidAddress();
        if (initialExecutor == initialRescuer) revert CommonEventsAndErrors.InvalidAddress();

        rescuer = initialRescuer;
        executor = initialExecutor;
    }

    /**
     * @notice Set the contract into or out of rescue mode.
     * Only the rescuers are allowed to set.
     */
    function setRescueMode(bool value) external override {
        if (msg.sender != rescuer) revert CommonEventsAndErrors.InvalidAccess();
        emit RescueModeSet(value);
        inRescueMode = value;
    }

    /**
     * @notice Proposes a new Rescuer.
     * Can only be called by the current rescuer.
     */
    function proposeNewRescuer(address account) external override {
        if (msg.sender != rescuer) revert CommonEventsAndErrors.InvalidAccess();
        if (account == address(0)) revert CommonEventsAndErrors.InvalidAddress();
        emit NewRescuerProposed(msg.sender, _proposedNewRescuer, account);
        _proposedNewRescuer = account;
    }

    /**
     * @notice Caller accepts the role as new Rescuer.
     * Can only be called by the proposed rescuer
     */
    function acceptRescuer() external override {
        if (msg.sender != _proposedNewRescuer) revert CommonEventsAndErrors.InvalidAccess();
        if (msg.sender == executor) revert CommonEventsAndErrors.InvalidAddress();

        emit NewRescuerAccepted(rescuer, msg.sender);
        rescuer = msg.sender;
        delete _proposedNewRescuer;
    }

    /**
     * @notice Proposes a new Executor.
     * Can only be called by the current executor or rescuer (if in resuce mode)
     */
    function proposeNewExecutor(address account) external override onlyElevatedAccess {
        if (account == address(0)) revert CommonEventsAndErrors.InvalidAddress();
        emit NewExecutorProposed(executor, _proposedNewExecutor, account);
        _proposedNewExecutor = account;
    }

    /**
     * @notice Caller accepts the role as new Executor.
     * Can only be called by the proposed executor
     */
    function acceptExecutor() external override {
        if (msg.sender != _proposedNewExecutor) revert CommonEventsAndErrors.InvalidAccess();
        if (msg.sender == rescuer) revert CommonEventsAndErrors.InvalidAddress();

        emit NewExecutorAccepted(executor, msg.sender);
        executor = msg.sender;
        delete _proposedNewExecutor;
    }

    /**
     * @notice Grant `allowedCaller` the rights to call the function selectors in the access list.
     * @dev fnSelector == bytes4(keccak256("fn(argType1,argType2,...)"))
     */
    function setExplicitAccess(address allowedCaller, ExplicitAccess[] calldata access) external override onlyElevatedAccess {
        if (allowedCaller == address(0)) revert CommonEventsAndErrors.InvalidAddress();
        uint256 _length = access.length;
        ExplicitAccess memory _access;
        for (uint256 i; i < _length; ++i) {
            _access = access[i];
            emit ExplicitAccessSet(allowedCaller, _access.fnSelector, _access.allowed);
            explicitFunctionAccess[allowedCaller][_access.fnSelector] = _access.allowed;
        }
    }

    function isElevatedAccess(address caller, bytes4 fnSelector) internal view returns (bool) {
        if (inRescueMode) {
            // If we're in rescue mode, then only the rescuers can call
            return caller == rescuer;
        } else if (caller == executor || explicitFunctionAccess[caller][fnSelector]) {
            // If we're not in rescue mode, the executor can call all functions
            // or the caller has been given explicit access on this function
            return true;
        }
        return false;
    }

    /**
     * @notice Under normal operations, only the executors are allowed to call.
     * If 'rescue mode' has been enabled, then only the rescuers are allowed to call.
     * @dev Important: Only for use when called from an *external* contract. 
     * If a function with this modifier is called internally then the `msg.sig` 
     * will still refer to the top level externally called function.
     */
    modifier onlyElevatedAccess() {
        if (!isElevatedAccess(msg.sender, msg.sig)) revert CommonEventsAndErrors.InvalidAccess();
        _;
    }

    /**
     * @notice Only the executors or rescuers can call.
     */
    modifier onlyInRescueMode() {
        if (!(inRescueMode && msg.sender == rescuer)) revert CommonEventsAndErrors.InvalidAccess();
        _;
    }

    modifier notInRescueMode() {
        if (inRescueMode) revert CommonEventsAndErrors.InvalidAccess();
        _;
    }
}

pragma solidity 0.8.19;
// SPDX-License-Identifier: AGPL-3.0-or-later
// Temple (v2/interestRate/CompoundedInterest.sol)

import { ud } from "@prb/math/src/UD60x18.sol";

/**
 * @notice A maths library to calculate compounded interest
 */
library CompoundedInterest {
    uint256 public constant ONE_YEAR = 365 days;

    /// @notice FV = P*e^(r*t)
    /// @param principal Initial principal amount, 1e18 precision
    /// @param elapsed Number of seconds elapsed
    /// @param interestRate The interest rate per annum, 1e18 precision. eg 5% = 0.05e18
    function continuouslyCompounded(
        uint256 principal, 
        uint256 elapsed, 
        uint96 interestRate
    ) internal pure returns (uint256) {
        uint256 exponent = elapsed * interestRate / ONE_YEAR;
        return ud(principal).mul(
            ud(exponent).exp()
        ).unwrap();
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 999999
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

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dexed":true,"internalType":"address","name":"newExecutor","type":"address"}],"name":"NewExecutorAccepted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldExecutor","type":"address"},{"indexed":true,"internalType":"address","name":"oldProposedExecutor","type":"address"},{"indexed":true,"internalType":"address","name":"newProposedExecutor","type":"address"}],"name":"NewExecutorProposed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldRescuer","type":"address"},{"indexed":true,"internalType":"address","name":"newRescuer","type":"address"}],"name":"NewRescuerAccepted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"oldRescuer","type":"address"},{"indexed":true,"internalType":"address","name":"oldProposedRescuer","type":"address"},{"indexed":true,"internalType":"address","name":"newProposedRescuer","type":"address"}],"name":"NewRescuerProposed","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"fundedBy","type":"address"},{"indexed":true,"internalType":"address","name":"onBehalfOf","type":"address"},{"indexed":false,"internalType":"uint128","name":"repayAmount","type":"uint128"}],"name":"Repay","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bool","name":"value","type":"bool"}],"name":"RescueModeSet","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"strategy","type":"address"},{"indexed":true,"internalType":"address","name":"treasuryReservesVault","type":"address"}],"name":"TlcStrategySet","type":"event"},{"inputs":[],"name":"acceptExecutor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"acceptRescuer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"accountData","outputs":[{"components":[{"internalType":"uint128","name":"collateral","type":"uint128"},{"internalType":"uint128","name":"debtCheckpoint","type":"uint128"},{"internalType":"uint256","name":"interestAccumulator","type":"uint256"}],"internalType":"struct ITlcDataTypes.AccountData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"accountPosition","outputs":[{"components":[{"internalType":"uint128","name":"collateral","type":"uint128"},{"internalType":"uint128","name":"currentDebt","type":"uint128"},{"internalType":"uint128","name":"maxBorrow","type":"uint128"},{"internalType":"uint256","name":"healthFactor","type":"uint256"},{"internalType":"uint256","name":"loanToValueRatio","type":"uint256"}],"internalType":"struct ITlcDataTypes.AccountPosition","name":"position","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint128","name":"collateralAmount","type":"uint128"},{"internalType":"address","name":"onBehalfOf","type":"address"}],"name":"addCollateral","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"}],"name":"batchLiquidate","outputs":[{"internalType":"uint128","name":"totalCollateralClaimed","type":"uint128"},{"internalType":"uint128","name":"totalDebtWiped","type":"uint128"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"address","name":"recipient","type":"address"}],"name":"borrow","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"circuitBreakerProxy","outputs":[{"internalType":"contract ITempleCircuitBreakerProxy","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"accounts","type":"address[]"}],"name":"computeLiquidity","outputs":[{"components":[{"internalType":"bool","name":"hasExceededMaxLtv","type":"bool"},{"internalType":"uint128","name":"collateral","type":"uint128"},{"internalType":"uint256","name":"collateralValue","type":"uint256"},{"internalType":"uint128","name":"currentDebt","type":"uint128"}],"internalType":"struct ITlcDataTypes.LiquidationStatus[]","name":"status","type":"tuple[]"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"daiToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"debtTokenDetails","outputs":[{"components":[{"internalType":"uint96","name":"maxLtvRatio","type":"uint96"},{"internalType":"contract IInterestRateModel","name":"interestRateModel","type":"address"},{"internalType":"bool","name":"borrowsPaused","type":"bool"}],"internalType":"struct ITlcDataTypes.DebtTokenConfig","name":"","type":"tuple"},{"components":[{"internalType":"uint32","name":"interestAccumulatorUpdatedAt","type":"uint32"},{"internalType":"uint128","name":"totalDebt","type":"uint128"},{"internalType":"uint96","name":"interestRate","type":"uint96"},{"internalType":"uint256","name":"interestAccumulator","type":"uint256"}],"internalType":"struct ITlcDataTypes.DebtTokenData","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"executor","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"bytes4","name":"","type":"bytes4"}],"name":"explicitFunctionAccess","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"getDebtTokenCache","outputs":[{"components":[{"components":[{"internalType":"uint96","name":"maxLtvRatio","type":"uint96"},{"internalType":"contract IInterestRateModel","name":"interestRateModel","type":"address"},{"internalType":"bool","name":"borrowsPaused","type":"bool"}],"internalType":"struct ITlcDataTypes.DebtTokenConfig","name":"config","type":"tuple"},{"internalType":"uint128","name":"totalDebt","type":"uint128"},{"internalType":"uint96","name":"interestRate","type":"uint96"},{"internalType":"uint256","name":"interestAccumulator","type":"uint256"},{"internalType":"uint256","name":"price","type":"uint256"},{"internalType":"uint256","name":"trvDebtCeiling","type":"uint256"}],"internalType":"struct TempleLineOfCredit.DebtTokenCache","name":"","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"inRescueMode","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"liquidationsPaused","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"minBorrowAmount","outputs":[{"internalType":"uint128","name":"","type":"uint128"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"proposeNewExecutor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"proposeNewRescuer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"token","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"recoverToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"refreshInterestRates","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"amount","type":"uint128"},{"internalType":"address","name":"recipient","type":"address"}],"name":"removeCollateral","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"repayAmount","type":"uint128"},{"internalType":"address","name":"onBehalfOf","type":"address"}],"name":"repay","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"onBehalfOf","type":"address"}],"name":"repayAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"rescuer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bool","name":"isPaused","type":"bool"}],"name":"setBorrowPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"allowedCaller","type":"address"},{"components":[{"internalType":"bytes4","name":"fnSelector","type":"bytes4"},{"internalType":"bool","name":"allowed","type":"bool"}],"internalType":"struct ITempleElevatedAccess.ExplicitAccess[]","name":"access","type":"tuple[]"}],"name":"setExplicitAccess","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"interestRateModel","type":"address"}],"name":"setInterestRateModel","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"isPaused","type":"bool"}],"name":"setLiquidationsPaused","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"maxLtvRatio","type":"uint256"}],"name":"setMaxLtvRatio","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint128","name":"amount","type":"uint128"}],"name":"setMinBorrowAmount","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bool","name":"value","type":"bool"}],"name":"setRescueMode","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newTlcStrategy","type":"address"}],"name":"setTlcStrategy","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"templeToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"tlcStrategy","outputs":[{"internalType":"contract ITlcStrategy","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalCollateral","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalDebtPosition","outputs":[{"components":[{"internalType":"uint256","name":"utilizationRatio","type":"uint256"},{"internalType":"uint256","name":"borrowRate","type":"uint256"},{"internalType":"uint256","name":"totalDebt","type":"uint256"}],"internalType":"struct ITlcDataTypes.TotalDebtPosition","name":"position","type":"tuple"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"treasuryReservesVault","outputs":[{"internalType":"contract ITreasuryReservesVault","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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0000000000000000000000009f90430179d9b67341bfa50559bc7b8e35629f1b000000000000000000000000b1e8ab0a81aadf632a653e46caeda1593d71d14300000000000000000000000087b8d213177fb132e508b5d7018f7b590e00a480000000000000000000000000470ebf5f030ed85fc1ed4c2d36b9dd02e77cf1b70000000000000000000000006b175474e89094c44da98b954eedeac495271d0f0000000000000000000000000000000000000000000000000b1a2bc2ec5000000000000000000000000000009498ab765beed8292938937079ac56080b8a179d

-----Decoded View---------------
Arg [0] : _initialRescuer (address): 0x9f90430179D9b67341BFa50559bc7B8E35629f1b
Arg [1] : _initialExecutor (address): 0xb1E8AB0a81AaDf632a653E46Caeda1593d71d143
Arg [2] : _circuitBreakerProxy (address): 0x87B8D213177FB132e508b5d7018f7b590e00a480
Arg [3] : _templeToken (address): 0x470EBf5f030Ed85Fc1ed4C2d36B9DD02e77CF1b7
Arg [4] : _daiToken (address): 0x6B175474E89094C44Da98b954EedeAC495271d0F
Arg [5] : _maxLtvRatio (uint256): 800000000000000000
Arg [6] : _interestRateModel (address): 0x9498ab765BeeD8292938937079Ac56080B8a179d

-----Encoded View---------------
7 Constructor Arguments found :
Arg [0] : 0000000000000000000000009f90430179d9b67341bfa50559bc7b8e35629f1b
Arg [1] : 000000000000000000000000b1e8ab0a81aadf632a653e46caeda1593d71d143
Arg [2] : 00000000000000000000000087b8d213177fb132e508b5d7018f7b590e00a480
Arg [3] : 000000000000000000000000470ebf5f030ed85fc1ed4c2d36b9dd02e77cf1b7
Arg [4] : 0000000000000000000000006b175474e89094c44da98b954eedeac495271d0f
Arg [5] : 0000000000000000000000000000000000000000000000000b1a2bc2ec500000
Arg [6] : 0000000000000000000000009498ab765beed8292938937079ac56080b8a179d