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Contract Name:
Admin
Compiler Version
v0.8.18+commit.87f61d96
Optimization Enabled:
Yes with 1337 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: UNKNOWN pragma solidity 0.8.18; // Contracts/Libraries/Modifiers import { LibCore } from "../../libraries/LibCore.sol"; import { LibFakePools } from "../../libraries/LibFakePools.sol"; import { LibUsd } from "../../libraries/LibUsd.sol"; import { Ownable } from "../../Ownable.sol"; contract Admin is Ownable { // VIEWS function state() external pure returns (LibCore.Storage memory) { return LibCore.store(); } // SETTERS function setCreationPrice(uint256 price) external onlyOwner { LibCore.store().creationPrice = price; } function setTradeFee(uint16 fee) external onlyOwner { LibCore.store().tradeFee = fee; } function setProceedsReceiver(address receiver) external onlyOwner { LibCore.store().proceedsReceiver = receiver; } function setUsdOracle(address priceFeed, uint256 heartBeat) external onlyOwner { LibUsd.store().usdOracle = LibUsd.ChainlinkOracle(priceFeed, heartBeat); } // FAKE POOL SETTERS function setFakePoolFakeUsd(uint256 fakeUsd) external onlyOwner { LibFakePools.store().fakeUsd = fakeUsd; } function setFakePoolMCapThreshold(uint256 threshold) external onlyOwner { LibFakePools.store().usdMcapThreshold = threshold; } function drain() external onlyOwner { payable(owner()).transfer(address(this).balance); } }
// SPDX-License-Identifier: UNKNOWN pragma solidity 0.8.18; interface IChainlinkAggregatorV3 { function latestRoundData() external view returns (uint80 roundId, int256 answer, uint256 startedAt, uint256 updatedAt, uint80 answeredInRound); }
// SPDX-License-Identifier: MIT pragma solidity 0.8.18; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ interface IDiamondCut { enum FacetCutAction { Add, Replace, Remove } // Add=0, Replace=1, Remove=2 struct FacetCut { address facetAddress; FacetCutAction action; bytes4[] functionSelectors; } /// @notice Add/replace/remove any number of functions and optionally execute /// a function with delegatecall /// @param _diamondCut Contains the facet addresses and function selectors /// @param _init The address of the contract or facet to execute _calldata /// @param _calldata A function call, including function selector and arguments /// _calldata is executed with delegatecall on _init function diamondCut( FacetCut[] calldata _diamondCut, address _init, bytes calldata _calldata ) external; event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata); }
// SPDX-License-Identifier: UNKNOWN pragma solidity 0.8.18; import { LibUtils } from "./LibUtils.sol"; library LibCore { bytes32 constant STORAGE_POSITION = keccak256("diamond.core.storage"); struct Storage { address proceedsReceiver; uint256 creationPrice; uint16 tradeFee; uint256 tokenSupply; } function store() internal pure returns (Storage storage s) { bytes32 position = STORAGE_POSITION; assembly { s.slot := position } } function gatherProceeds(uint256 amount) internal { (bool sent,) = store().proceedsReceiver.call{value: amount}(""); require(sent, "gather proceeds failed"); } function calculateTradeFee(uint256 eth) internal view returns (uint256) { return LibUtils.calculatePercentage(store().tradeFee, eth); } function deductTradeFee(uint256 eth) internal returns (uint256) { uint256 fee = calculateTradeFee(eth); gatherProceeds(fee); return eth - fee; } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.18; /******************************************************************************\ * Author: Nick Mudge <[email protected]> (https://twitter.com/mudgen) * EIP-2535 Diamonds: https://eips.ethereum.org/EIPS/eip-2535 /******************************************************************************/ import {IDiamondCut} from "../interfaces/IDiamondCut.sol"; // Remember to add the loupe functions from DiamondLoupeFacet to the diamond. // The loupe functions are required by the EIP2535 Diamonds standard error InitializationFunctionReverted( address _initializationContractAddress, bytes _calldata ); library LibDiamond { bytes32 constant DIAMOND_STORAGE_POSITION = keccak256("diamond.standard.diamond.storage"); struct FacetAddressAndPosition { address facetAddress; uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array } struct FacetFunctionSelectors { bytes4[] functionSelectors; uint256 facetAddressPosition; // position of facetAddress in facetAddresses array } struct DiamondStorage { // maps function selector to the facet address and // the position of the selector in the facetFunctionSelectors.selectors array mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition; // maps facet addresses to function selectors mapping(address => FacetFunctionSelectors) facetFunctionSelectors; // facet addresses address[] facetAddresses; // Used to query if a contract implements an interface. // Used to implement ERC-165. mapping(bytes4 => bool) supportedInterfaces; // owner of the contract address contractOwner; // owner of the diamond itself address diamondAddress; } function diamondStorage() internal pure returns (DiamondStorage storage ds) { bytes32 position = DIAMOND_STORAGE_POSITION; assembly { ds.slot := position } } event OwnershipTransferred( address indexed previousOwner, address indexed newOwner ); function setContractOwner(address _newOwner) internal { DiamondStorage storage ds = diamondStorage(); address previousOwner = ds.contractOwner; ds.contractOwner = _newOwner; emit OwnershipTransferred(previousOwner, _newOwner); } function contractOwner() internal view returns (address contractOwner_) { contractOwner_ = diamondStorage().contractOwner; } function enforceIsContractOwner() internal view { require( msg.sender == diamondStorage().contractOwner, "LibDiamond: Must be contract owner" ); } function enforceDiamondItself() internal view { require( msg.sender == diamondStorage().diamondAddress, "LibDiamond: Must be the diamond" ); } event DiamondCut( IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata ); // Internal function version of diamondCut function diamondCut( IDiamondCut.FacetCut[] memory _diamondCut, address _init, bytes memory _calldata ) internal { for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) { IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action; if (action == IDiamondCut.FacetCutAction.Add) { addFunctions( _diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors ); } else if (action == IDiamondCut.FacetCutAction.Replace) { replaceFunctions( _diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors ); } else if (action == IDiamondCut.FacetCutAction.Remove) { removeFunctions( _diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors ); } else { revert("LibDiamondCut: Incorrect FacetCutAction"); } } emit DiamondCut(_diamondCut, _init, _calldata); initializeDiamondCut(_init, _calldata); } function addFunctions( address _facetAddress, bytes4[] memory _functionSelectors ) internal { require( _functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut" ); DiamondStorage storage ds = diamondStorage(); require( _facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)" ); uint96 selectorPosition = uint96( ds.facetFunctionSelectors[_facetAddress].functionSelectors.length ); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } for ( uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++ ) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds .selectorToFacetAndPosition[selector] .facetAddress; require( oldFacetAddress == address(0), "LibDiamondCut: Can't add function that already exists" ); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; } } function replaceFunctions( address _facetAddress, bytes4[] memory _functionSelectors ) internal { require( _functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut" ); DiamondStorage storage ds = diamondStorage(); require( _facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)" ); uint96 selectorPosition = uint96( ds.facetFunctionSelectors[_facetAddress].functionSelectors.length ); // add new facet address if it does not exist if (selectorPosition == 0) { addFacet(ds, _facetAddress); } for ( uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++ ) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds .selectorToFacetAndPosition[selector] .facetAddress; require( oldFacetAddress != _facetAddress, "LibDiamondCut: Can't replace function with same function" ); removeFunction(ds, oldFacetAddress, selector); addFunction(ds, selector, selectorPosition, _facetAddress); selectorPosition++; } } function removeFunctions( address _facetAddress, bytes4[] memory _functionSelectors ) internal { require( _functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut" ); DiamondStorage storage ds = diamondStorage(); // if function does not exist then do nothing and return require( _facetAddress == address(0), "LibDiamondCut: Remove facet address must be address(0)" ); for ( uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++ ) { bytes4 selector = _functionSelectors[selectorIndex]; address oldFacetAddress = ds .selectorToFacetAndPosition[selector] .facetAddress; removeFunction(ds, oldFacetAddress, selector); } } function addFacet(DiamondStorage storage ds, address _facetAddress) internal { enforceHasContractCode( _facetAddress, "LibDiamondCut: New facet has no code" ); ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds .facetAddresses .length; ds.facetAddresses.push(_facetAddress); } function addFunction( DiamondStorage storage ds, bytes4 _selector, uint96 _selectorPosition, address _facetAddress ) internal { ds .selectorToFacetAndPosition[_selector] .functionSelectorPosition = _selectorPosition; ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(_selector); ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress; } function removeFunction( DiamondStorage storage ds, address _facetAddress, bytes4 _selector ) internal { require( _facetAddress != address(0), "LibDiamondCut: Can't remove function that doesn't exist" ); // an immutable function is a function defined directly in a diamond require( _facetAddress != address(this), "LibDiamondCut: Can't remove immutable function" ); // replace selector with last selector, then delete last selector uint256 selectorPosition = ds .selectorToFacetAndPosition[_selector] .functionSelectorPosition; uint256 lastSelectorPosition = ds .facetFunctionSelectors[_facetAddress] .functionSelectors .length - 1; // if not the same then replace _selector with lastSelector if (selectorPosition != lastSelectorPosition) { bytes4 lastSelector = ds .facetFunctionSelectors[_facetAddress] .functionSelectors[lastSelectorPosition]; ds.facetFunctionSelectors[_facetAddress].functionSelectors[ selectorPosition ] = lastSelector; ds .selectorToFacetAndPosition[lastSelector] .functionSelectorPosition = uint96(selectorPosition); } // delete the last selector ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop(); delete ds.selectorToFacetAndPosition[_selector]; // if no more selectors for facet address then delete the facet address if (lastSelectorPosition == 0) { // replace facet address with last facet address and delete last facet address uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1; uint256 facetAddressPosition = ds .facetFunctionSelectors[_facetAddress] .facetAddressPosition; if (facetAddressPosition != lastFacetAddressPosition) { address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition]; ds.facetAddresses[facetAddressPosition] = lastFacetAddress; ds .facetFunctionSelectors[lastFacetAddress] .facetAddressPosition = facetAddressPosition; } ds.facetAddresses.pop(); delete ds.facetFunctionSelectors[_facetAddress].facetAddressPosition; } } function initializeDiamondCut( address _init, bytes memory _calldata ) internal { if (_init == address(0)) { return; } enforceHasContractCode(_init, "LibDiamondCut: _init address has no code"); (bool success, bytes memory error) = _init.delegatecall(_calldata); if (!success) { if (error.length > 0) { // bubble up error /// @solidity memory-safe-assembly assembly { let returndata_size := mload(error) revert(add(32, error), returndata_size) } } else { revert InitializationFunctionReverted(_init, _calldata); } } } function enforceHasContractCode( address _contract, string memory _errorMessage ) internal view { uint256 contractSize; assembly { contractSize := extcodesize(_contract) } require(contractSize > 0, _errorMessage); } }
// SPDX-License-Identifier: UNKNOWN pragma solidity 0.8.18; library LibFakePools { bytes32 constant STORAGE_POSITION = keccak256("diamond.fakepools.storage"); struct FakePool { address token; uint256 fakeEth; uint256 ethReserve; uint256 tokenReserve; } struct Storage { uint256 fakeUsd; uint256 usdMcapThreshold; mapping(address => FakePool) pools; } function store() internal pure returns (Storage storage s) { bytes32 position = STORAGE_POSITION; assembly { s.slot := position } } }
// SPDX-License-Identifier: UNKNOWN pragma solidity 0.8.18; import { IChainlinkAggregatorV3 } from "../interfaces/IChainlinkAggregatorV3.sol"; import { FixedPointMathLib } from "solady/src/utils/FixedPointMathLib.sol"; library LibUsd { bytes32 constant STORAGE_POSITION = keccak256("diamond.usd.storage"); struct ChainlinkOracle { address priceFeed; uint256 heartBeat; } struct Storage { ChainlinkOracle usdOracle; } function store() internal pure returns (Storage storage s) { bytes32 position = STORAGE_POSITION; assembly { s.slot := position } } function ethToUsd(uint256 ethAmount) internal view returns (uint256) { return FixedPointMathLib.mulWad(ethAmount, getPrice()); } function usdToEth(uint256 usdAmount) internal view returns (uint256) { return FixedPointMathLib.divWad(usdAmount, getPrice()); } function getPrice() internal view returns (uint256) { ChainlinkOracle storage oracle = store().usdOracle; (, int256 price, uint256 timeStamp,,) = IChainlinkAggregatorV3(oracle.priceFeed).latestRoundData(); require(uint256(timeStamp) >= block.timestamp - oracle.heartBeat, "stale pricefeed"); // usd oracle returns the price in 8 decimals, we want 18 return uint256(price) * (10 ** 10); } }
// SPDX-License-Identifier: UNKNOWN pragma solidity 0.8.18; library LibUtils { function calculatePercentage(uint16 fee, uint256 amount) internal pure returns (uint256) { return amount * fee / 1000; } }
// SPDX-License-Identifier: MIT pragma solidity 0.8.18; import {LibDiamond} from "./libraries/LibDiamond.sol"; contract Ownable { error Unauthorized(address account); modifier onlyOwner() { if (LibDiamond.diamondStorage().contractOwner != msg.sender) { revert Unauthorized(msg.sender); } _; } function owner() internal view returns (address owner_) { owner_ = LibDiamond.diamondStorage().contractOwner; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.4; /// @notice Arithmetic library with operations for fixed-point numbers. /// @author Solady (https://github.com/vectorized/solady/blob/main/src/utils/FixedPointMathLib.sol) /// @author Modified from Solmate (https://github.com/transmissions11/solmate/blob/main/src/utils/FixedPointMathLib.sol) library FixedPointMathLib { /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CUSTOM ERRORS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The operation failed, as the output exceeds the maximum value of uint256. error ExpOverflow(); /// @dev The operation failed, as the output exceeds the maximum value of uint256. error FactorialOverflow(); /// @dev The operation failed, due to an overflow. error RPowOverflow(); /// @dev The mantissa is too big to fit. error MantissaOverflow(); /// @dev The operation failed, due to an multiplication overflow. error MulWadFailed(); /// @dev The operation failed, due to an multiplication overflow. error SMulWadFailed(); /// @dev The operation failed, either due to a multiplication overflow, or a division by a zero. error DivWadFailed(); /// @dev The operation failed, either due to a multiplication overflow, or a division by a zero. error SDivWadFailed(); /// @dev The operation failed, either due to a multiplication overflow, or a division by a zero. error MulDivFailed(); /// @dev The division failed, as the denominator is zero. error DivFailed(); /// @dev The full precision multiply-divide operation failed, either due /// to the result being larger than 256 bits, or a division by a zero. error FullMulDivFailed(); /// @dev The output is undefined, as the input is less-than-or-equal to zero. error LnWadUndefined(); /// @dev The input outside the acceptable domain. error OutOfDomain(); /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* CONSTANTS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev The scalar of ETH and most ERC20s. uint256 internal constant WAD = 1e18; /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* SIMPLIFIED FIXED POINT OPERATIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Equivalent to `(x * y) / WAD` rounded down. function mulWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to `require(y == 0 || x <= type(uint256).max / y)`. if gt(x, div(not(0), y)) { if y { mstore(0x00, 0xbac65e5b) // `MulWadFailed()`. revert(0x1c, 0x04) } } z := div(mul(x, y), WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded down. function sMulWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, y) // Equivalent to `require((x == 0 || z / x == y) && !(x == -1 && y == type(int256).min))`. if iszero(gt(or(iszero(x), eq(sdiv(z, x), y)), lt(not(x), eq(y, shl(255, 1))))) { mstore(0x00, 0xedcd4dd4) // `SMulWadFailed()`. revert(0x1c, 0x04) } z := sdiv(z, WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded down, but without overflow checks. function rawMulWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := div(mul(x, y), WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded down, but without overflow checks. function rawSMulWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := sdiv(mul(x, y), WAD) } } /// @dev Equivalent to `(x * y) / WAD` rounded up. function mulWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, y) // Equivalent to `require(y == 0 || x <= type(uint256).max / y)`. if iszero(eq(div(z, y), x)) { if y { mstore(0x00, 0xbac65e5b) // `MulWadFailed()`. revert(0x1c, 0x04) } } z := add(iszero(iszero(mod(z, WAD))), div(z, WAD)) } } /// @dev Equivalent to `(x * y) / WAD` rounded up, but without overflow checks. function rawMulWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := add(iszero(iszero(mod(mul(x, y), WAD))), div(mul(x, y), WAD)) } } /// @dev Equivalent to `(x * WAD) / y` rounded down. function divWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to `require(y != 0 && x <= type(uint256).max / WAD)`. if iszero(mul(y, lt(x, add(1, div(not(0), WAD))))) { mstore(0x00, 0x7c5f487d) // `DivWadFailed()`. revert(0x1c, 0x04) } z := div(mul(x, WAD), y) } } /// @dev Equivalent to `(x * WAD) / y` rounded down. function sDivWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, WAD) // Equivalent to `require(y != 0 && ((x * WAD) / WAD == x))`. if iszero(mul(y, eq(sdiv(z, WAD), x))) { mstore(0x00, 0x5c43740d) // `SDivWadFailed()`. revert(0x1c, 0x04) } z := sdiv(z, y) } } /// @dev Equivalent to `(x * WAD) / y` rounded down, but without overflow and divide by zero checks. function rawDivWad(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := div(mul(x, WAD), y) } } /// @dev Equivalent to `(x * WAD) / y` rounded down, but without overflow and divide by zero checks. function rawSDivWad(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := sdiv(mul(x, WAD), y) } } /// @dev Equivalent to `(x * WAD) / y` rounded up. function divWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Equivalent to `require(y != 0 && x <= type(uint256).max / WAD)`. if iszero(mul(y, lt(x, add(1, div(not(0), WAD))))) { mstore(0x00, 0x7c5f487d) // `DivWadFailed()`. revert(0x1c, 0x04) } z := add(iszero(iszero(mod(mul(x, WAD), y))), div(mul(x, WAD), y)) } } /// @dev Equivalent to `(x * WAD) / y` rounded up, but without overflow and divide by zero checks. function rawDivWadUp(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := add(iszero(iszero(mod(mul(x, WAD), y))), div(mul(x, WAD), y)) } } /// @dev Equivalent to `x` to the power of `y`. /// because `x ** y = (e ** ln(x)) ** y = e ** (ln(x) * y)`. /// Note: This function is an approximation. function powWad(int256 x, int256 y) internal pure returns (int256) { // Using `ln(x)` means `x` must be greater than 0. return expWad((lnWad(x) * y) / int256(WAD)); } /// @dev Returns `exp(x)`, denominated in `WAD`. /// Credit to Remco Bloemen under MIT license: https://2π.com/22/exp-ln /// Note: This function is an approximation. Monotonically increasing. function expWad(int256 x) internal pure returns (int256 r) { unchecked { // When the result is less than 0.5 we return zero. // This happens when `x <= (log(1e-18) * 1e18) ~ -4.15e19`. if (x <= -41446531673892822313) return r; /// @solidity memory-safe-assembly assembly { // When the result is greater than `(2**255 - 1) / 1e18` we can not represent it as // an int. This happens when `x >= floor(log((2**255 - 1) / 1e18) * 1e18) ≈ 135`. if iszero(slt(x, 135305999368893231589)) { mstore(0x00, 0xa37bfec9) // `ExpOverflow()`. revert(0x1c, 0x04) } } // `x` is now in the range `(-42, 136) * 1e18`. Convert to `(-42, 136) * 2**96` // for more intermediate precision and a binary basis. This base conversion // is a multiplication by 1e18 / 2**96 = 5**18 / 2**78. x = (x << 78) / 5 ** 18; // Reduce range of x to (-½ ln 2, ½ ln 2) * 2**96 by factoring out powers // of two such that exp(x) = exp(x') * 2**k, where k is an integer. // Solving this gives k = round(x / log(2)) and x' = x - k * log(2). int256 k = ((x << 96) / 54916777467707473351141471128 + 2 ** 95) >> 96; x = x - k * 54916777467707473351141471128; // `k` is in the range `[-61, 195]`. // Evaluate using a (6, 7)-term rational approximation. // `p` is made monic, we'll multiply by a scale factor later. int256 y = x + 1346386616545796478920950773328; y = ((y * x) >> 96) + 57155421227552351082224309758442; int256 p = y + x - 94201549194550492254356042504812; p = ((p * y) >> 96) + 28719021644029726153956944680412240; p = p * x + (4385272521454847904659076985693276 << 96); // We leave `p` in `2**192` basis so we don't need to scale it back up for the division. int256 q = x - 2855989394907223263936484059900; q = ((q * x) >> 96) + 50020603652535783019961831881945; q = ((q * x) >> 96) - 533845033583426703283633433725380; q = ((q * x) >> 96) + 3604857256930695427073651918091429; q = ((q * x) >> 96) - 14423608567350463180887372962807573; q = ((q * x) >> 96) + 26449188498355588339934803723976023; /// @solidity memory-safe-assembly assembly { // Div in assembly because solidity adds a zero check despite the unchecked. // The q polynomial won't have zeros in the domain as all its roots are complex. // No scaling is necessary because p is already `2**96` too large. r := sdiv(p, q) } // r should be in the range `(0.09, 0.25) * 2**96`. // We now need to multiply r by: // - The scale factor `s ≈ 6.031367120`. // - The `2**k` factor from the range reduction. // - The `1e18 / 2**96` factor for base conversion. // We do this all at once, with an intermediate result in `2**213` // basis, so the final right shift is always by a positive amount. r = int256( (uint256(r) * 3822833074963236453042738258902158003155416615667) >> uint256(195 - k) ); } } /// @dev Returns `ln(x)`, denominated in `WAD`. /// Credit to Remco Bloemen under MIT license: https://2π.com/22/exp-ln /// Note: This function is an approximation. Monotonically increasing. function lnWad(int256 x) internal pure returns (int256 r) { /// @solidity memory-safe-assembly assembly { // We want to convert `x` from `10**18` fixed point to `2**96` fixed point. // We do this by multiplying by `2**96 / 10**18`. But since // `ln(x * C) = ln(x) + ln(C)`, we can simply do nothing here // and add `ln(2**96 / 10**18)` at the end. // Compute `k = log2(x) - 96`, `r = 159 - k = 255 - log2(x) = 255 ^ log2(x)`. r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(r, shl(3, lt(0xff, shr(r, x)))) // We place the check here for more optimal stack operations. if iszero(sgt(x, 0)) { mstore(0x00, 0x1615e638) // `LnWadUndefined()`. revert(0x1c, 0x04) } // forgefmt: disable-next-item r := xor(r, byte(and(0x1f, shr(shr(r, x), 0x8421084210842108cc6318c6db6d54be)), 0xf8f9f9faf9fdfafbf9fdfcfdfafbfcfef9fafdfafcfcfbfefafafcfbffffffff)) // Reduce range of x to (1, 2) * 2**96 // ln(2^k * x) = k * ln(2) + ln(x) x := shr(159, shl(r, x)) // Evaluate using a (8, 8)-term rational approximation. // `p` is made monic, we will multiply by a scale factor later. // forgefmt: disable-next-item let p := sub( // This heavily nested expression is to avoid stack-too-deep for via-ir. sar(96, mul(add(43456485725739037958740375743393, sar(96, mul(add(24828157081833163892658089445524, sar(96, mul(add(3273285459638523848632254066296, x), x))), x))), x)), 11111509109440967052023855526967) p := sub(sar(96, mul(p, x)), 45023709667254063763336534515857) p := sub(sar(96, mul(p, x)), 14706773417378608786704636184526) p := sub(mul(p, x), shl(96, 795164235651350426258249787498)) // We leave `p` in `2**192` basis so we don't need to scale it back up for the division. // `q` is monic by convention. let q := add(5573035233440673466300451813936, x) q := add(71694874799317883764090561454958, sar(96, mul(x, q))) q := add(283447036172924575727196451306956, sar(96, mul(x, q))) q := add(401686690394027663651624208769553, sar(96, mul(x, q))) q := add(204048457590392012362485061816622, sar(96, mul(x, q))) q := add(31853899698501571402653359427138, sar(96, mul(x, q))) q := add(909429971244387300277376558375, sar(96, mul(x, q))) // `p / q` is in the range `(0, 0.125) * 2**96`. // Finalization, we need to: // - Multiply by the scale factor `s = 5.549…`. // - Add `ln(2**96 / 10**18)`. // - Add `k * ln(2)`. // - Multiply by `10**18 / 2**96 = 5**18 >> 78`. // The q polynomial is known not to have zeros in the domain. // No scaling required because p is already `2**96` too large. p := sdiv(p, q) // Multiply by the scaling factor: `s * 5**18 * 2**96`, base is now `5**18 * 2**192`. p := mul(1677202110996718588342820967067443963516166, p) // Add `ln(2) * k * 5**18 * 2**192`. // forgefmt: disable-next-item p := add(mul(16597577552685614221487285958193947469193820559219878177908093499208371, sub(159, r)), p) // Add `ln(2**96 / 10**18) * 5**18 * 2**192`. p := add(600920179829731861736702779321621459595472258049074101567377883020018308, p) // Base conversion: mul `2**18 / 2**192`. r := sar(174, p) } } /// @dev Returns `W_0(x)`, denominated in `WAD`. /// See: https://en.wikipedia.org/wiki/Lambert_W_function /// a.k.a. Product log function. This is an approximation of the principal branch. /// Note: This function is an approximation. Monotonically increasing. function lambertW0Wad(int256 x) internal pure returns (int256 w) { // forgefmt: disable-next-item unchecked { if ((w = x) <= -367879441171442322) revert OutOfDomain(); // `x` less than `-1/e`. (int256 wad, int256 p) = (int256(WAD), x); uint256 c; // Whether we need to avoid catastrophic cancellation. uint256 i = 4; // Number of iterations. if (w <= 0x1ffffffffffff) { if (-0x4000000000000 <= w) { i = 1; // Inputs near zero only take one step to converge. } else if (w <= -0x3ffffffffffffff) { i = 32; // Inputs near `-1/e` take very long to converge. } } else if (uint256(w >> 63) == uint256(0)) { /// @solidity memory-safe-assembly assembly { // Inline log2 for more performance, since the range is small. let v := shr(49, w) let l := shl(3, lt(0xff, v)) l := add(or(l, byte(and(0x1f, shr(shr(l, v), 0x8421084210842108cc6318c6db6d54be)), 0x0706060506020504060203020504030106050205030304010505030400000000)), 49) w := sdiv(shl(l, 7), byte(sub(l, 31), 0x0303030303030303040506080c13)) c := gt(l, 60) i := add(2, add(gt(l, 53), c)) } } else { int256 ll = lnWad(w = lnWad(w)); /// @solidity memory-safe-assembly assembly { // `w = ln(x) - ln(ln(x)) + b * ln(ln(x)) / ln(x)`. w := add(sdiv(mul(ll, 1023715080943847266), w), sub(w, ll)) i := add(3, iszero(shr(68, x))) c := iszero(shr(143, x)) } if (c == uint256(0)) { do { // If `x` is big, use Newton's so that intermediate values won't overflow. int256 e = expWad(w); /// @solidity memory-safe-assembly assembly { let t := mul(w, div(e, wad)) w := sub(w, sdiv(sub(t, x), div(add(e, t), wad))) } if (p <= w) break; p = w; } while (--i != uint256(0)); /// @solidity memory-safe-assembly assembly { w := sub(w, sgt(w, 2)) } return w; } } do { // Otherwise, use Halley's for faster convergence. int256 e = expWad(w); /// @solidity memory-safe-assembly assembly { let t := add(w, wad) let s := sub(mul(w, e), mul(x, wad)) w := sub(w, sdiv(mul(s, wad), sub(mul(e, t), sdiv(mul(add(t, wad), s), add(t, t))))) } if (p <= w) break; p = w; } while (--i != c); /// @solidity memory-safe-assembly assembly { w := sub(w, sgt(w, 2)) } // For certain ranges of `x`, we'll use the quadratic-rate recursive formula of // R. Iacono and J.P. Boyd for the last iteration, to avoid catastrophic cancellation. if (c == uint256(0)) return w; int256 t = w | 1; /// @solidity memory-safe-assembly assembly { x := sdiv(mul(x, wad), t) } x = (t * (wad + lnWad(x))); /// @solidity memory-safe-assembly assembly { w := sdiv(x, add(wad, t)) } } } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* GENERAL NUMBER UTILITIES */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns `a * b == x * y`, with full precision. function fullMulEq(uint256 a, uint256 b, uint256 x, uint256 y) internal pure returns (bool result) { /// @solidity memory-safe-assembly assembly { result := and(eq(mul(a, b), mul(x, y)), eq(mulmod(x, y, not(0)), mulmod(a, b, not(0)))) } } /// @dev Calculates `floor(x * y / d)` with full precision. /// Throws if result overflows a uint256 or when `d` is zero. /// Credit to Remco Bloemen under MIT license: https://2π.com/21/muldiv function fullMulDiv(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // 512-bit multiply `[p1 p0] = x * y`. // Compute the product mod `2**256` and mod `2**256 - 1` // then use the Chinese Remainder Theorem to reconstruct // the 512 bit result. The result is stored in two 256 // variables such that `product = p1 * 2**256 + p0`. // Temporarily use `z` as `p0` to save gas. z := mul(x, y) // Lower 256 bits of `x * y`. for {} 1 {} { // If overflows. if iszero(mul(or(iszero(x), eq(div(z, x), y)), d)) { let mm := mulmod(x, y, not(0)) let p1 := sub(mm, add(z, lt(mm, z))) // Upper 256 bits of `x * y`. /*------------------- 512 by 256 division --------------------*/ // Make division exact by subtracting the remainder from `[p1 p0]`. let r := mulmod(x, y, d) // Compute remainder using mulmod. let t := and(d, sub(0, d)) // The least significant bit of `d`. `t >= 1`. // Make sure `z` is less than `2**256`. Also prevents `d == 0`. // Placing the check here seems to give more optimal stack operations. if iszero(gt(d, p1)) { mstore(0x00, 0xae47f702) // `FullMulDivFailed()`. revert(0x1c, 0x04) } d := div(d, t) // Divide `d` by `t`, which is a power of two. // Invert `d mod 2**256` // Now that `d` is an odd number, it has an inverse // modulo `2**256` such that `d * inv = 1 mod 2**256`. // Compute the inverse by starting with a seed that is correct // correct for four bits. That is, `d * inv = 1 mod 2**4`. let inv := xor(2, mul(3, d)) // Now use 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. inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**8 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**16 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**32 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**64 inv := mul(inv, sub(2, mul(d, inv))) // inverse mod 2**128 z := mul( // Divide [p1 p0] by the factors of two. // Shift in bits from `p1` into `p0`. For this we need // to flip `t` such that it is `2**256 / t`. or(mul(sub(p1, gt(r, z)), add(div(sub(0, t), t), 1)), div(sub(z, r), t)), mul(sub(2, mul(d, inv)), inv) // inverse mod 2**256 ) break } z := div(z, d) break } } } /// @dev Calculates `floor(x * y / d)` with full precision. /// Behavior is undefined if `d` is zero or the final result cannot fit in 256 bits. /// Performs the full 512 bit calculation regardless. function fullMulDivUnchecked(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, y) let mm := mulmod(x, y, not(0)) let p1 := sub(mm, add(z, lt(mm, z))) let t := and(d, sub(0, d)) let r := mulmod(x, y, d) d := div(d, t) let inv := xor(2, mul(3, d)) inv := mul(inv, sub(2, mul(d, inv))) inv := mul(inv, sub(2, mul(d, inv))) inv := mul(inv, sub(2, mul(d, inv))) inv := mul(inv, sub(2, mul(d, inv))) inv := mul(inv, sub(2, mul(d, inv))) z := mul( or(mul(sub(p1, gt(r, z)), add(div(sub(0, t), t), 1)), div(sub(z, r), t)), mul(sub(2, mul(d, inv)), inv) ) } } /// @dev Calculates `floor(x * y / d)` with full precision, rounded up. /// Throws if result overflows a uint256 or when `d` is zero. /// Credit to Uniswap-v3-core under MIT license: /// https://github.com/Uniswap/v3-core/blob/main/contracts/libraries/FullMath.sol function fullMulDivUp(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { z = fullMulDiv(x, y, d); /// @solidity memory-safe-assembly assembly { if mulmod(x, y, d) { z := add(z, 1) if iszero(z) { mstore(0x00, 0xae47f702) // `FullMulDivFailed()`. revert(0x1c, 0x04) } } } } /// @dev Calculates `floor(x * y / 2 ** n)` with full precision. /// Throws if result overflows a uint256. /// Credit to Philogy under MIT license: /// https://github.com/SorellaLabs/angstrom/blob/main/contracts/src/libraries/X128MathLib.sol function fullMulDivN(uint256 x, uint256 y, uint8 n) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // Temporarily use `z` as `p0` to save gas. z := mul(x, y) // Lower 256 bits of `x * y`. We'll call this `z`. for {} 1 {} { if iszero(or(iszero(x), eq(div(z, x), y))) { let k := and(n, 0xff) // `n`, cleaned. let mm := mulmod(x, y, not(0)) let p1 := sub(mm, add(z, lt(mm, z))) // Upper 256 bits of `x * y`. // | p1 | z | // Before: | p1_0 ¦ p1_1 | z_0 ¦ z_1 | // Final: | 0 ¦ p1_0 | p1_1 ¦ z_0 | // Check that final `z` doesn't overflow by checking that p1_0 = 0. if iszero(shr(k, p1)) { z := add(shl(sub(256, k), p1), shr(k, z)) break } mstore(0x00, 0xae47f702) // `FullMulDivFailed()`. revert(0x1c, 0x04) } z := shr(and(n, 0xff), z) break } } } /// @dev Returns `floor(x * y / d)`. /// Reverts if `x * y` overflows, or `d` is zero. function mulDiv(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, y) // Equivalent to `require(d != 0 && (y == 0 || x <= type(uint256).max / y))`. if iszero(mul(or(iszero(x), eq(div(z, x), y)), d)) { mstore(0x00, 0xad251c27) // `MulDivFailed()`. revert(0x1c, 0x04) } z := div(z, d) } } /// @dev Returns `ceil(x * y / d)`. /// Reverts if `x * y` overflows, or `d` is zero. function mulDivUp(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(x, y) // Equivalent to `require(d != 0 && (y == 0 || x <= type(uint256).max / y))`. if iszero(mul(or(iszero(x), eq(div(z, x), y)), d)) { mstore(0x00, 0xad251c27) // `MulDivFailed()`. revert(0x1c, 0x04) } z := add(iszero(iszero(mod(z, d))), div(z, d)) } } /// @dev Returns `x`, the modular multiplicative inverse of `a`, such that `(a * x) % n == 1`. function invMod(uint256 a, uint256 n) internal pure returns (uint256 x) { /// @solidity memory-safe-assembly assembly { let g := n let r := mod(a, n) for { let y := 1 } 1 {} { let q := div(g, r) let t := g g := r r := sub(t, mul(r, q)) let u := x x := y y := sub(u, mul(y, q)) if iszero(r) { break } } x := mul(eq(g, 1), add(x, mul(slt(x, 0), n))) } } /// @dev Returns `ceil(x / d)`. /// Reverts if `d` is zero. function divUp(uint256 x, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { if iszero(d) { mstore(0x00, 0x65244e4e) // `DivFailed()`. revert(0x1c, 0x04) } z := add(iszero(iszero(mod(x, d))), div(x, d)) } } /// @dev Returns `max(0, x - y)`. function zeroFloorSub(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(gt(x, y), sub(x, y)) } } /// @dev Returns `condition ? x : y`, without branching. function ternary(bool condition, uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), iszero(condition))) } } /// @dev Exponentiate `x` to `y` by squaring, denominated in base `b`. /// Reverts if the computation overflows. function rpow(uint256 x, uint256 y, uint256 b) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mul(b, iszero(y)) // `0 ** 0 = 1`. Otherwise, `0 ** n = 0`. if x { z := xor(b, mul(xor(b, x), and(y, 1))) // `z = isEven(y) ? scale : x` let half := shr(1, b) // Divide `b` by 2. // Divide `y` by 2 every iteration. for { y := shr(1, y) } y { y := shr(1, y) } { let xx := mul(x, x) // Store x squared. let xxRound := add(xx, half) // Round to the nearest number. // Revert if `xx + half` overflowed, or if `x ** 2` overflows. if or(lt(xxRound, xx), shr(128, x)) { mstore(0x00, 0x49f7642b) // `RPowOverflow()`. revert(0x1c, 0x04) } x := div(xxRound, b) // Set `x` to scaled `xxRound`. // If `y` is odd: if and(y, 1) { let zx := mul(z, x) // Compute `z * x`. let zxRound := add(zx, half) // Round to the nearest number. // If `z * x` overflowed or `zx + half` overflowed: if or(xor(div(zx, x), z), lt(zxRound, zx)) { // Revert if `x` is non-zero. if x { mstore(0x00, 0x49f7642b) // `RPowOverflow()`. revert(0x1c, 0x04) } } z := div(zxRound, b) // Return properly scaled `zxRound`. } } } } } /// @dev Returns the square root of `x`, rounded down. function sqrt(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { // `floor(sqrt(2**15)) = 181`. `sqrt(2**15) - 181 = 2.84`. z := 181 // The "correct" value is 1, but this saves a multiplication later. // This segment is to get a reasonable initial estimate for the Babylonian method. With a bad // start, the correct # of bits increases ~linearly each iteration instead of ~quadratically. // Let `y = x / 2**r`. We check `y >= 2**(k + 8)` // but shift right by `k` bits to ensure that if `x >= 256`, then `y >= 256`. let r := shl(7, lt(0xffffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffffff, shr(r, x)))) z := shl(shr(1, r), z) // Goal was to get `z*z*y` within a small factor of `x`. More iterations could // get y in a tighter range. Currently, we will have y in `[256, 256*(2**16))`. // We ensured `y >= 256` so that the relative difference between `y` and `y+1` is small. // That's not possible if `x < 256` but we can just verify those cases exhaustively. // Now, `z*z*y <= x < z*z*(y+1)`, and `y <= 2**(16+8)`, and either `y >= 256`, or `x < 256`. // Correctness can be checked exhaustively for `x < 256`, so we assume `y >= 256`. // Then `z*sqrt(y)` is within `sqrt(257)/sqrt(256)` of `sqrt(x)`, or about 20bps. // For `s` in the range `[1/256, 256]`, the estimate `f(s) = (181/1024) * (s+1)` // is in the range `(1/2.84 * sqrt(s), 2.84 * sqrt(s))`, // with largest error when `s = 1` and when `s = 256` or `1/256`. // Since `y` is in `[256, 256*(2**16))`, let `a = y/65536`, so that `a` is in `[1/256, 256)`. // Then we can estimate `sqrt(y)` using // `sqrt(65536) * 181/1024 * (a + 1) = 181/4 * (y + 65536)/65536 = 181 * (y + 65536)/2**18`. // There is no overflow risk here since `y < 2**136` after the first branch above. z := shr(18, mul(z, add(shr(r, x), 65536))) // A `mul()` is saved from starting `z` at 181. // Given the worst case multiplicative error of 2.84 above, 7 iterations should be enough. z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) z := shr(1, add(z, div(x, z))) // If `x+1` is a perfect square, the Babylonian method cycles between // `floor(sqrt(x))` and `ceil(sqrt(x))`. This statement ensures we return floor. // See: https://en.wikipedia.org/wiki/Integer_square_root#Using_only_integer_division z := sub(z, lt(div(x, z), z)) } } /// @dev Returns the cube root of `x`, rounded down. /// Credit to bout3fiddy and pcaversaccio under AGPLv3 license: /// https://github.com/pcaversaccio/snekmate/blob/main/src/utils/Math.vy /// Formally verified by xuwinnie: /// https://github.com/vectorized/solady/blob/main/audits/xuwinnie-solady-cbrt-proof.pdf function cbrt(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { let r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(r, shl(3, lt(0xff, shr(r, x)))) // Makeshift lookup table to nudge the approximate log2 result. z := div(shl(div(r, 3), shl(lt(0xf, shr(r, x)), 0xf)), xor(7, mod(r, 3))) // Newton-Raphson's. z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) z := div(add(add(div(x, mul(z, z)), z), z), 3) // Round down. z := sub(z, lt(div(x, mul(z, z)), z)) } } /// @dev Returns the square root of `x`, denominated in `WAD`, rounded down. function sqrtWad(uint256 x) internal pure returns (uint256 z) { unchecked { if (x <= type(uint256).max / 10 ** 18) return sqrt(x * 10 ** 18); z = (1 + sqrt(x)) * 10 ** 9; z = (fullMulDivUnchecked(x, 10 ** 18, z) + z) >> 1; } /// @solidity memory-safe-assembly assembly { z := sub(z, gt(999999999999999999, sub(mulmod(z, z, x), 1))) // Round down. } } /// @dev Returns the cube root of `x`, denominated in `WAD`, rounded down. /// Formally verified by xuwinnie: /// https://github.com/vectorized/solady/blob/main/audits/xuwinnie-solady-cbrt-proof.pdf function cbrtWad(uint256 x) internal pure returns (uint256 z) { unchecked { if (x <= type(uint256).max / 10 ** 36) return cbrt(x * 10 ** 36); z = (1 + cbrt(x)) * 10 ** 12; z = (fullMulDivUnchecked(x, 10 ** 36, z * z) + z + z) / 3; } /// @solidity memory-safe-assembly assembly { let p := x for {} 1 {} { if iszero(shr(229, p)) { if iszero(shr(199, p)) { p := mul(p, 100000000000000000) // 10 ** 17. break } p := mul(p, 100000000) // 10 ** 8. break } if iszero(shr(249, p)) { p := mul(p, 100) } break } let t := mulmod(mul(z, z), z, p) z := sub(z, gt(lt(t, shr(1, p)), iszero(t))) // Round down. } } /// @dev Returns the factorial of `x`. function factorial(uint256 x) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := 1 if iszero(lt(x, 58)) { mstore(0x00, 0xaba0f2a2) // `FactorialOverflow()`. revert(0x1c, 0x04) } for {} x { x := sub(x, 1) } { z := mul(z, x) } } } /// @dev Returns the log2 of `x`. /// Equivalent to computing the index of the most significant bit (MSB) of `x`. /// Returns 0 if `x` is zero. function log2(uint256 x) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(r, shl(3, lt(0xff, shr(r, x)))) // forgefmt: disable-next-item r := or(r, byte(and(0x1f, shr(shr(r, x), 0x8421084210842108cc6318c6db6d54be)), 0x0706060506020504060203020504030106050205030304010505030400000000)) } } /// @dev Returns the log2 of `x`, rounded up. /// Returns 0 if `x` is zero. function log2Up(uint256 x) internal pure returns (uint256 r) { r = log2(x); /// @solidity memory-safe-assembly assembly { r := add(r, lt(shl(r, 1), x)) } } /// @dev Returns the log10 of `x`. /// Returns 0 if `x` is zero. function log10(uint256 x) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { if iszero(lt(x, 100000000000000000000000000000000000000)) { x := div(x, 100000000000000000000000000000000000000) r := 38 } if iszero(lt(x, 100000000000000000000)) { x := div(x, 100000000000000000000) r := add(r, 20) } if iszero(lt(x, 10000000000)) { x := div(x, 10000000000) r := add(r, 10) } if iszero(lt(x, 100000)) { x := div(x, 100000) r := add(r, 5) } r := add(r, add(gt(x, 9), add(gt(x, 99), add(gt(x, 999), gt(x, 9999))))) } } /// @dev Returns the log10 of `x`, rounded up. /// Returns 0 if `x` is zero. function log10Up(uint256 x) internal pure returns (uint256 r) { r = log10(x); /// @solidity memory-safe-assembly assembly { r := add(r, lt(exp(10, r), x)) } } /// @dev Returns the log256 of `x`. /// Returns 0 if `x` is zero. function log256(uint256 x) internal pure returns (uint256 r) { /// @solidity memory-safe-assembly assembly { r := shl(7, lt(0xffffffffffffffffffffffffffffffff, x)) r := or(r, shl(6, lt(0xffffffffffffffff, shr(r, x)))) r := or(r, shl(5, lt(0xffffffff, shr(r, x)))) r := or(r, shl(4, lt(0xffff, shr(r, x)))) r := or(shr(3, r), lt(0xff, shr(r, x))) } } /// @dev Returns the log256 of `x`, rounded up. /// Returns 0 if `x` is zero. function log256Up(uint256 x) internal pure returns (uint256 r) { r = log256(x); /// @solidity memory-safe-assembly assembly { r := add(r, lt(shl(shl(3, r), 1), x)) } } /// @dev Returns the scientific notation format `mantissa * 10 ** exponent` of `x`. /// Useful for compressing prices (e.g. using 25 bit mantissa and 7 bit exponent). function sci(uint256 x) internal pure returns (uint256 mantissa, uint256 exponent) { /// @solidity memory-safe-assembly assembly { mantissa := x if mantissa { if iszero(mod(mantissa, 1000000000000000000000000000000000)) { mantissa := div(mantissa, 1000000000000000000000000000000000) exponent := 33 } if iszero(mod(mantissa, 10000000000000000000)) { mantissa := div(mantissa, 10000000000000000000) exponent := add(exponent, 19) } if iszero(mod(mantissa, 1000000000000)) { mantissa := div(mantissa, 1000000000000) exponent := add(exponent, 12) } if iszero(mod(mantissa, 1000000)) { mantissa := div(mantissa, 1000000) exponent := add(exponent, 6) } if iszero(mod(mantissa, 10000)) { mantissa := div(mantissa, 10000) exponent := add(exponent, 4) } if iszero(mod(mantissa, 100)) { mantissa := div(mantissa, 100) exponent := add(exponent, 2) } if iszero(mod(mantissa, 10)) { mantissa := div(mantissa, 10) exponent := add(exponent, 1) } } } } /// @dev Convenience function for packing `x` into a smaller number using `sci`. /// The `mantissa` will be in bits [7..255] (the upper 249 bits). /// The `exponent` will be in bits [0..6] (the lower 7 bits). /// Use `SafeCastLib` to safely ensure that the `packed` number is small /// enough to fit in the desired unsigned integer type: /// ``` /// uint32 packed = SafeCastLib.toUint32(FixedPointMathLib.packSci(777 ether)); /// ``` function packSci(uint256 x) internal pure returns (uint256 packed) { (x, packed) = sci(x); // Reuse for `mantissa` and `exponent`. /// @solidity memory-safe-assembly assembly { if shr(249, x) { mstore(0x00, 0xce30380c) // `MantissaOverflow()`. revert(0x1c, 0x04) } packed := or(shl(7, x), packed) } } /// @dev Convenience function for unpacking a packed number from `packSci`. function unpackSci(uint256 packed) internal pure returns (uint256 unpacked) { unchecked { unpacked = (packed >> 7) * 10 ** (packed & 0x7f); } } /// @dev Returns the average of `x` and `y`. Rounds towards zero. function avg(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = (x & y) + ((x ^ y) >> 1); } } /// @dev Returns the average of `x` and `y`. Rounds towards negative infinity. function avg(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = (x >> 1) + (y >> 1) + (x & y & 1); } } /// @dev Returns the absolute value of `x`. function abs(int256 x) internal pure returns (uint256 z) { unchecked { z = (uint256(x) + uint256(x >> 255)) ^ uint256(x >> 255); } } /// @dev Returns the absolute distance between `x` and `y`. function dist(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := add(xor(sub(0, gt(x, y)), sub(y, x)), gt(x, y)) } } /// @dev Returns the absolute distance between `x` and `y`. function dist(int256 x, int256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := add(xor(sub(0, sgt(x, y)), sub(y, x)), sgt(x, y)) } } /// @dev Returns the minimum of `x` and `y`. function min(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), lt(y, x))) } } /// @dev Returns the minimum of `x` and `y`. function min(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), slt(y, x))) } } /// @dev Returns the maximum of `x` and `y`. function max(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), gt(y, x))) } } /// @dev Returns the maximum of `x` and `y`. function max(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, y), sgt(y, x))) } } /// @dev Returns `x`, bounded to `minValue` and `maxValue`. function clamp(uint256 x, uint256 minValue, uint256 maxValue) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, minValue), gt(minValue, x))) z := xor(z, mul(xor(z, maxValue), lt(maxValue, z))) } } /// @dev Returns `x`, bounded to `minValue` and `maxValue`. function clamp(int256 x, int256 minValue, int256 maxValue) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := xor(x, mul(xor(x, minValue), sgt(minValue, x))) z := xor(z, mul(xor(z, maxValue), slt(maxValue, z))) } } /// @dev Returns greatest common divisor of `x` and `y`. function gcd(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { for { z := x } y {} { let t := y y := mod(z, y) z := t } } } /// @dev Returns `a + (b - a) * (t - begin) / (end - begin)`, /// with `t` clamped between `begin` and `end` (inclusive). /// Agnostic to the order of (`a`, `b`) and (`end`, `begin`). /// If `begins == end`, returns `t <= begin ? a : b`. function lerp(uint256 a, uint256 b, uint256 t, uint256 begin, uint256 end) internal pure returns (uint256) { if (begin > end) (t, begin, end) = (~t, ~begin, ~end); if (t <= begin) return a; if (t >= end) return b; unchecked { if (b >= a) return a + fullMulDiv(b - a, t - begin, end - begin); return a - fullMulDiv(a - b, t - begin, end - begin); } } /// @dev Returns `a + (b - a) * (t - begin) / (end - begin)`. /// with `t` clamped between `begin` and `end` (inclusive). /// Agnostic to the order of (`a`, `b`) and (`end`, `begin`). /// If `begins == end`, returns `t <= begin ? a : b`. function lerp(int256 a, int256 b, int256 t, int256 begin, int256 end) internal pure returns (int256) { if (begin > end) (t, begin, end) = (~t, ~begin, ~end); if (t <= begin) return a; if (t >= end) return b; // forgefmt: disable-next-item unchecked { if (b >= a) return int256(uint256(a) + fullMulDiv(uint256(b - a), uint256(t - begin), uint256(end - begin))); return int256(uint256(a) - fullMulDiv(uint256(a - b), uint256(t - begin), uint256(end - begin))); } } /// @dev Returns if `x` is an even number. Some people may need this. function isEven(uint256 x) internal pure returns (bool) { return x & uint256(1) == uint256(0); } /*´:°•.°+.*•´.*:˚.°*.˚•´.°:°•.°•.*•´.*:˚.°*.˚•´.°:°•.°+.*•´.*:*/ /* RAW NUMBER OPERATIONS */ /*.•°:°.´+˚.*°.˚:*.´•*.+°.•°:´*.´•*.•°.•°:°.´:•˚°.*°.˚:*.´+°.•*/ /// @dev Returns `x + y`, without checking for overflow. function rawAdd(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = x + y; } } /// @dev Returns `x + y`, without checking for overflow. function rawAdd(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = x + y; } } /// @dev Returns `x - y`, without checking for underflow. function rawSub(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = x - y; } } /// @dev Returns `x - y`, without checking for underflow. function rawSub(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = x - y; } } /// @dev Returns `x * y`, without checking for overflow. function rawMul(uint256 x, uint256 y) internal pure returns (uint256 z) { unchecked { z = x * y; } } /// @dev Returns `x * y`, without checking for overflow. function rawMul(int256 x, int256 y) internal pure returns (int256 z) { unchecked { z = x * y; } } /// @dev Returns `x / y`, returning 0 if `y` is zero. function rawDiv(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := div(x, y) } } /// @dev Returns `x / y`, returning 0 if `y` is zero. function rawSDiv(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := sdiv(x, y) } } /// @dev Returns `x % y`, returning 0 if `y` is zero. function rawMod(uint256 x, uint256 y) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mod(x, y) } } /// @dev Returns `x % y`, returning 0 if `y` is zero. function rawSMod(int256 x, int256 y) internal pure returns (int256 z) { /// @solidity memory-safe-assembly assembly { z := smod(x, y) } } /// @dev Returns `(x + y) % d`, return 0 if `d` if zero. function rawAddMod(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := addmod(x, y, d) } } /// @dev Returns `(x * y) % d`, return 0 if `d` if zero. function rawMulMod(uint256 x, uint256 y, uint256 d) internal pure returns (uint256 z) { /// @solidity memory-safe-assembly assembly { z := mulmod(x, y, d) } } }
{ "optimizer": { "enabled": true, "runs": 1337 }, "viaIR": true, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"Unauthorized","type":"error"},{"inputs":[],"name":"drain","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"price","type":"uint256"}],"name":"setCreationPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"fakeUsd","type":"uint256"}],"name":"setFakePoolFakeUsd","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"threshold","type":"uint256"}],"name":"setFakePoolMCapThreshold","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"receiver","type":"address"}],"name":"setProceedsReceiver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"fee","type":"uint16"}],"name":"setTradeFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"priceFeed","type":"address"},{"internalType":"uint256","name":"heartBeat","type":"uint256"}],"name":"setUsdOracle","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"state","outputs":[{"components":[{"internalType":"address","name":"proceedsReceiver","type":"address"},{"internalType":"uint256","name":"creationPrice","type":"uint256"},{"internalType":"uint16","name":"tradeFee","type":"uint16"},{"internalType":"uint256","name":"tokenSupply","type":"uint256"}],"internalType":"struct LibCore.Storage","name":"","type":"tuple"}],"stateMutability":"pure","type":"function"}]
Contract Creation Code
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Deployed Bytecode
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Multichain Portfolio | 30 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.