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0 APE
APE Value
$0.00More Info
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Latest 25 from a total of 42 transactions
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Create Pool | 3589384 | 16 days ago | IN | 0 APE | 0.17421231 |
Latest 25 internal transactions (View All)
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Contract Name:
AlgebraFactory
Compiler Version
v0.7.6+commit.7338295f
Optimization Enabled:
Yes with 0 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity =0.7.6; pragma abicoder v2; import './interfaces/IAlgebraFactory.sol'; import './interfaces/IAlgebraPoolDeployer.sol'; import './interfaces/IDataStorageOperator.sol'; import './libraries/AdaptiveFee.sol'; import './DataStorageOperator.sol'; /// @title Algebra factory /// @notice Is used to deploy pools and its dataStorages /// @dev Version: Algebra V1.9-directional-fee contract AlgebraFactory is IAlgebraFactory { /// @inheritdoc IAlgebraFactory address public override owner; /// @inheritdoc IAlgebraFactory address public immutable override poolDeployer; /// @inheritdoc IAlgebraFactory uint8 public override defaultCommunityFee; /// @inheritdoc IAlgebraFactory address public override farmingAddress; /// @inheritdoc IAlgebraFactory address public override vaultAddress; // values of constants for sigmoids in fee calculation formula AdaptiveFee.Configuration public baseFeeConfiguration = AdaptiveFee.Configuration( 3000 - Constants.BASE_FEE, // alpha1 15000 - 3000, // alpha2 360, // beta1 60000, // beta2 59, // gamma1 8500, // gamma2 0, // volumeBeta 10, // volumeGamma Constants.BASE_FEE // baseFee ); modifier onlyOwner() { require(msg.sender == owner); _; } /// @inheritdoc IAlgebraFactory mapping(address => mapping(address => address)) public override poolByPair; constructor(address _poolDeployer, address _vaultAddress) { owner = msg.sender; emit Owner(msg.sender); poolDeployer = _poolDeployer; vaultAddress = _vaultAddress; } /// @inheritdoc IAlgebraFactory function createPool(address tokenA, address tokenB) external override returns (address pool) { require(tokenA != tokenB); (address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA); require(token0 != address(0)); require(poolByPair[token0][token1] == address(0)); IDataStorageOperator dataStorage = new DataStorageOperator(computeAddress(token0, token1)); dataStorage.changeFeeConfiguration(true, baseFeeConfiguration); dataStorage.changeFeeConfiguration(false, baseFeeConfiguration); pool = IAlgebraPoolDeployer(poolDeployer).deploy(address(dataStorage), address(this), token0, token1); poolByPair[token0][token1] = pool; // to avoid future addresses comparing we are populating the mapping twice poolByPair[token1][token0] = pool; emit Pool(token0, token1, pool); } /// @inheritdoc IAlgebraFactory function setOwner(address _owner) external override onlyOwner { require(owner != _owner); emit Owner(_owner); owner = _owner; } /// @inheritdoc IAlgebraFactory function setFarmingAddress(address _farmingAddress) external override onlyOwner { require(farmingAddress != _farmingAddress); emit FarmingAddress(_farmingAddress); farmingAddress = _farmingAddress; } /// @inheritdoc IAlgebraFactory function setDefaultCommunityFee(uint8 newDefaultCommunityFee) external override onlyOwner { require(newDefaultCommunityFee <= Constants.MAX_COMMUNITY_FEE); require(defaultCommunityFee != newDefaultCommunityFee); defaultCommunityFee = newDefaultCommunityFee; emit DefaultCommunityFee(newDefaultCommunityFee); } /// @inheritdoc IAlgebraFactory function setVaultAddress(address _vaultAddress) external override onlyOwner { require(vaultAddress != _vaultAddress); emit VaultAddress(_vaultAddress); vaultAddress = _vaultAddress; } /// @inheritdoc IAlgebraFactory function setBaseFeeConfiguration( uint16 alpha1, uint16 alpha2, uint32 beta1, uint32 beta2, uint16 gamma1, uint16 gamma2, uint32 volumeBeta, uint16 volumeGamma, uint16 baseFee ) external override onlyOwner { require(uint256(alpha1) + uint256(alpha2) + uint256(baseFee) <= type(uint16).max, 'Max fee exceeded'); require(gamma1 != 0 && gamma2 != 0 && volumeGamma != 0, 'Gammas must be > 0'); baseFeeConfiguration = AdaptiveFee.Configuration(alpha1, alpha2, beta1, beta2, gamma1, gamma2, volumeBeta, volumeGamma, baseFee); emit FeeConfiguration(alpha1, alpha2, beta1, beta2, gamma1, gamma2, volumeBeta, volumeGamma, baseFee); } bytes32 internal constant POOL_INIT_CODE_HASH = 0x6c1bebd370ba84753516bc1393c0d0a6c645856da55f5393ac8ab3d6dbc861d3; /// @notice Deterministically computes the pool address given the factory and PoolKey /// @param token0 first token /// @param token1 second token /// @return pool The contract address of the Algebra pool function computeAddress(address token0, address token1) internal view returns (address pool) { pool = address(uint256(keccak256(abi.encodePacked(hex'ff', poolDeployer, keccak256(abi.encode(token0, token1)), POOL_INIT_CODE_HASH)))); } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity =0.7.6; pragma abicoder v2; import './interfaces/IAlgebraFactory.sol'; import './interfaces/IDataStorageOperator.sol'; import './libraries/DataStorage.sol'; import './libraries/Sqrt.sol'; import './libraries/AdaptiveFee.sol'; import './libraries/Constants.sol'; /// @title Algebra timepoints data operator /// @notice This contract stores timepoints and calculates adaptive fee and statistical averages contract DataStorageOperator is IDataStorageOperator { uint256 constant UINT16_MODULO = 65536; uint128 constant MAX_VOLUME_PER_LIQUIDITY = 100000 << 64; // maximum meaningful ratio of volume to liquidity using DataStorage for DataStorage.Timepoint[UINT16_MODULO]; DataStorage.Timepoint[UINT16_MODULO] public override timepoints; AdaptiveFee.Configuration public feeConfigZto; AdaptiveFee.Configuration public feeConfigOtz; address private immutable pool; address private immutable factory; modifier onlyPool() { require(msg.sender == pool, 'only pool can call this'); _; } constructor(address _pool) { factory = msg.sender; pool = _pool; } /// @inheritdoc IDataStorageOperator function initialize(uint32 time, int24 tick) external override onlyPool { return timepoints.initialize(time, tick); } /// @inheritdoc IDataStorageOperator function changeFeeConfiguration(bool zto, AdaptiveFee.Configuration calldata _feeConfig) external override { require(msg.sender == factory || msg.sender == IAlgebraFactory(factory).owner()); require(uint256(_feeConfig.alpha1) + uint256(_feeConfig.alpha2) + uint256(_feeConfig.baseFee) <= type(uint16).max, 'Max fee exceeded'); require(_feeConfig.gamma1 != 0 && _feeConfig.gamma2 != 0 && _feeConfig.volumeGamma != 0, 'Gammas must be > 0'); if (zto) feeConfigZto = _feeConfig; else feeConfigOtz = _feeConfig; emit FeeConfiguration(zto, _feeConfig); } /// @inheritdoc IDataStorageOperator function getSingleTimepoint( uint32 time, uint32 secondsAgo, int24 tick, uint16 index, uint128 liquidity ) external view override onlyPool returns (int56 tickCumulative, uint160 secondsPerLiquidityCumulative, uint112 volatilityCumulative, uint256 volumePerAvgLiquidity) { uint16 oldestIndex; // check if we have overflow in the past uint16 nextIndex = index + 1; // considering overflow if (timepoints[nextIndex].initialized) { oldestIndex = nextIndex; } DataStorage.Timepoint memory result = timepoints.getSingleTimepoint(time, secondsAgo, tick, index, oldestIndex, liquidity); (tickCumulative, secondsPerLiquidityCumulative, volatilityCumulative, volumePerAvgLiquidity) = ( result.tickCumulative, result.secondsPerLiquidityCumulative, result.volatilityCumulative, result.volumePerLiquidityCumulative ); } /// @inheritdoc IDataStorageOperator function getTimepoints( uint32 time, uint32[] memory secondsAgos, int24 tick, uint16 index, uint128 liquidity ) external view override onlyPool returns ( int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulatives, uint112[] memory volatilityCumulatives, uint256[] memory volumePerAvgLiquiditys ) { return timepoints.getTimepoints(time, secondsAgos, tick, index, liquidity); } /// @inheritdoc IDataStorageOperator function getAverages( uint32 time, int24 tick, uint16 index, uint128 liquidity ) external view override onlyPool returns (uint112 TWVolatilityAverage, uint256 TWVolumePerLiqAverage) { return timepoints.getAverages(time, tick, index, liquidity); } /// @inheritdoc IDataStorageOperator function write( uint16 index, uint32 blockTimestamp, int24 tick, uint128 liquidity, uint128 volumePerLiquidity ) external override onlyPool returns (uint16 indexUpdated) { return timepoints.write(index, blockTimestamp, tick, liquidity, volumePerLiquidity); } /// @inheritdoc IDataStorageOperator function calculateVolumePerLiquidity( uint128 liquidity, int256 amount0, int256 amount1 ) external pure override returns (uint128 volumePerLiquidity) { uint256 volume = Sqrt.sqrtAbs(amount0) * Sqrt.sqrtAbs(amount1); uint256 volumeShifted; if (volume >= 2 ** 192) volumeShifted = (type(uint256).max) / (liquidity > 0 ? liquidity : 1); else volumeShifted = (volume << 64) / (liquidity > 0 ? liquidity : 1); if (volumeShifted >= MAX_VOLUME_PER_LIQUIDITY) return MAX_VOLUME_PER_LIQUIDITY; else return uint128(volumeShifted); } /// @inheritdoc IDataStorageOperator function window() external pure override returns (uint32) { return DataStorage.WINDOW; } /// @inheritdoc IDataStorageOperator function getFees( uint32 _time, int24 _tick, uint16 _index, uint128 _liquidity ) external view override onlyPool returns (uint16 feeZto, uint16 feeOtz) { (uint88 volatilityAverage, uint256 volumePerLiqAverage) = timepoints.getAverages(_time, _tick, _index, _liquidity); feeZto = AdaptiveFee.getFee(volatilityAverage / 15, volumePerLiqAverage, feeConfigZto); feeOtz = AdaptiveFee.getFee(volatilityAverage / 15, volumePerLiqAverage, feeConfigOtz); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /** * @title The interface for the Algebra Factory * @dev Credit to Uniswap Labs under GPL-2.0-or-later license: * https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces */ interface IAlgebraFactory { /** * @notice Emitted when the owner of the factory is changed * @param newOwner The owner after the owner was changed */ event Owner(address indexed newOwner); /** * @notice Emitted when the vault address is changed * @param newVaultAddress The vault address after the address was changed */ event VaultAddress(address indexed newVaultAddress); /** * @notice Emitted when a pool is created * @param token0 The first token of the pool by address sort order * @param token1 The second token of the pool by address sort order * @param pool The address of the created pool */ event Pool(address indexed token0, address indexed token1, address pool); /** * @notice Emitted when the farming address is changed * @param newFarmingAddress The farming address after the address was changed */ event FarmingAddress(address indexed newFarmingAddress); /** * @notice Emitted when the default community fee is changed * @param newDefaultCommunityFee The new default community fee value */ event DefaultCommunityFee(uint8 newDefaultCommunityFee); event FeeConfiguration( uint16 alpha1, uint16 alpha2, uint32 beta1, uint32 beta2, uint16 gamma1, uint16 gamma2, uint32 volumeBeta, uint16 volumeGamma, uint16 baseFee ); /** * @notice Returns the current owner of the factory * @dev Can be changed by the current owner via setOwner * @return The address of the factory owner */ function owner() external view returns (address); /** * @notice Returns the current poolDeployerAddress * @return The address of the poolDeployer */ function poolDeployer() external view returns (address); /** * @dev Is retrieved from the pools to restrict calling * certain functions not by a tokenomics contract * @return The tokenomics contract address */ function farmingAddress() external view returns (address); /** * @notice Returns the default community fee * @return Fee which will be set at the creation of the pool */ function defaultCommunityFee() external view returns (uint8); function vaultAddress() external view returns (address); /** * @notice Returns the pool address for a given pair of tokens and a fee, or address 0 if it does not exist * @dev tokenA and tokenB may be passed in either token0/token1 or token1/token0 order * @param tokenA The contract address of either token0 or token1 * @param tokenB The contract address of the other token * @return pool The pool address */ function poolByPair(address tokenA, address tokenB) external view returns (address pool); /** * @notice Creates a pool for the given two tokens and fee * @param tokenA One of the two tokens in the desired pool * @param tokenB The other of the two tokens in the desired pool * @dev tokenA and tokenB may be passed in either order: token0/token1 or token1/token0. tickSpacing is retrieved * from the fee. The call will revert if the pool already exists, the fee is invalid, or the token arguments * are invalid. * @return pool The address of the newly created pool */ function createPool(address tokenA, address tokenB) external returns (address pool); /** * @notice Updates the owner of the factory * @dev Must be called by the current owner * @param _owner The new owner of the factory */ function setOwner(address _owner) external; /** * @dev updates tokenomics address on the factory * @param _farmingAddress The new tokenomics contract address */ function setFarmingAddress(address _farmingAddress) external; /** * @dev updates default community fee for new pools * @param newDefaultCommunityFee The new community fee, _must_ be <= MAX_COMMUNITY_FEE */ function setDefaultCommunityFee(uint8 newDefaultCommunityFee) external; /** * @dev updates vault address on the factory * @param _vaultAddress The new vault contract address */ function setVaultAddress(address _vaultAddress) external; /** * @notice Changes initial fee configuration for new pools * @dev changes coefficients for sigmoids: α / (1 + e^( (β-x) / γ)) * alpha1 + alpha2 + baseFee (max possible fee) must be <= type(uint16).max * gammas must be > 0 * @param alpha1 max value of the first sigmoid * @param alpha2 max value of the second sigmoid * @param beta1 shift along the x-axis for the first sigmoid * @param beta2 shift along the x-axis for the second sigmoid * @param gamma1 horizontal stretch factor for the first sigmoid * @param gamma2 horizontal stretch factor for the second sigmoid * @param volumeBeta shift along the x-axis for the outer volume-sigmoid * @param volumeGamma horizontal stretch factor the outer volume-sigmoid * @param baseFee minimum possible fee */ function setBaseFeeConfiguration( uint16 alpha1, uint16 alpha2, uint32 beta1, uint32 beta2, uint16 gamma1, uint16 gamma2, uint32 volumeBeta, uint16 volumeGamma, uint16 baseFee ) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; /** * @title An interface for a contract that is capable of deploying Algebra Pools * @notice A contract that constructs a pool must implement this to pass arguments to the pool * @dev This is used to avoid having constructor arguments in the pool contract, which results in the init code hash * of the pool being constant allowing the CREATE2 address of the pool to be cheaply computed on-chain. * Credit to Uniswap Labs under GPL-2.0-or-later license: * https://github.com/Uniswap/v3-core/tree/main/contracts/interfaces */ interface IAlgebraPoolDeployer { /** * @notice Emitted when the factory address is changed * @param factory The factory address after the address was changed */ event Factory(address indexed factory); /** * @notice Get the parameters to be used in constructing the pool, set transiently during pool creation. * @dev Called by the pool constructor to fetch the parameters of the pool * Returns dataStorage The pools associated dataStorage * Returns factory The factory address * Returns token0 The first token of the pool by address sort order * Returns token1 The second token of the pool by address sort order */ function parameters() external view returns (address dataStorage, address factory, address token0, address token1); /** * @dev Deploys a pool with the given parameters by transiently setting the parameters storage slot and then * clearing it after deploying the pool. * @param dataStorage The pools associated dataStorage * @param factory The contract address of the Algebra factory * @param token0 The first token of the pool by address sort order * @param token1 The second token of the pool by address sort order * @return pool The deployed pool's address */ function deploy(address dataStorage, address factory, address token0, address token1) external returns (address pool); /** * @dev Sets the factory address to the poolDeployer for permissioned actions * @param factory The address of the Algebra factory */ function setFactory(address factory) external; }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity >=0.5.0; pragma abicoder v2; import '../libraries/AdaptiveFee.sol'; interface IDataStorageOperator { event FeeConfiguration(bool zto, AdaptiveFee.Configuration feeConfig); /** * @notice Returns data belonging to a certain timepoint * @param index The index of timepoint in the array * @dev There is more convenient function to fetch a timepoint: getTimepoints(). Which requires not an index but seconds * @return initialized Whether the timepoint has been initialized and the values are safe to use, * blockTimestamp The timestamp of the observation, * tickCumulative The tick multiplied by seconds elapsed for the life of the pool as of the timepoint timestamp, * secondsPerLiquidityCumulative The seconds per in range liquidity for the life of the pool as of the timepoint timestamp, * volatilityCumulative Cumulative standard deviation for the life of the pool as of the timepoint timestamp, * averageTick Time-weighted average tick, * volumePerLiquidityCumulative Cumulative swap volume per liquidity for the life of the pool as of the timepoint timestamp */ function timepoints(uint256 index) external view returns ( bool initialized, uint32 blockTimestamp, int56 tickCumulative, uint160 secondsPerLiquidityCumulative, uint88 volatilityCumulative, int24 averageTick, uint144 volumePerLiquidityCumulative ); /// @notice Initialize the dataStorage array by writing the first slot. Called once for the lifecycle of the timepoints array /// @param time The time of the dataStorage initialization, via block.timestamp truncated to uint32 /// @param tick Initial tick function initialize(uint32 time, int24 tick) external; /// @dev Reverts if an timepoint at or before the desired timepoint timestamp does not exist. /// 0 may be passed as `secondsAgo' to return the current cumulative values. /// If called with a timestamp falling between two timepoints, returns the counterfactual accumulator values /// at exactly the timestamp between the two timepoints. /// @param time The current block timestamp /// @param secondsAgo The amount of time to look back, in seconds, at which point to return an timepoint /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return tickCumulative The cumulative tick since the pool was first initialized, as of `secondsAgo` /// @return secondsPerLiquidityCumulative The cumulative seconds / max(1, liquidity) since the pool was first initialized, as of `secondsAgo` /// @return volatilityCumulative The cumulative volatility value since the pool was first initialized, as of `secondsAgo` /// @return volumePerAvgLiquidity The cumulative volume per liquidity value since the pool was first initialized, as of `secondsAgo` function getSingleTimepoint( uint32 time, uint32 secondsAgo, int24 tick, uint16 index, uint128 liquidity ) external view returns ( int56 tickCumulative, uint160 secondsPerLiquidityCumulative, uint112 volatilityCumulative, uint256 volumePerAvgLiquidity ); /// @notice Returns the accumulator values as of each time seconds ago from the given time in the array of `secondsAgos` /// @dev Reverts if `secondsAgos` > oldest timepoint /// @param time The current block.timestamp /// @param secondsAgos Each amount of time to look back, in seconds, at which point to return an timepoint /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return tickCumulatives The cumulative tick since the pool was first initialized, as of each `secondsAgo` /// @return secondsPerLiquidityCumulatives The cumulative seconds / max(1, liquidity) since the pool was first initialized, as of each `secondsAgo` /// @return volatilityCumulatives The cumulative volatility values since the pool was first initialized, as of each `secondsAgo` /// @return volumePerAvgLiquiditys The cumulative volume per liquidity values since the pool was first initialized, as of each `secondsAgo` function getTimepoints( uint32 time, uint32[] memory secondsAgos, int24 tick, uint16 index, uint128 liquidity ) external view returns ( int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulatives, uint112[] memory volatilityCumulatives, uint256[] memory volumePerAvgLiquiditys ); /// @notice Returns average volatility in the range from time-WINDOW to time /// @param time The current block.timestamp /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return TWVolatilityAverage The average volatility in the recent range /// @return TWVolumePerLiqAverage The average volume per liquidity in the recent range function getAverages( uint32 time, int24 tick, uint16 index, uint128 liquidity ) external view returns (uint112 TWVolatilityAverage, uint256 TWVolumePerLiqAverage); /// @notice Writes an dataStorage timepoint to the array /// @dev Writable at most once per block. Index represents the most recently written element. index must be tracked externally. /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param blockTimestamp The timestamp of the new timepoint /// @param tick The active tick at the time of the new timepoint /// @param liquidity The total in-range liquidity at the time of the new timepoint /// @param volumePerLiquidity The gmean(volumes)/liquidity at the time of the new timepoint /// @return indexUpdated The new index of the most recently written element in the dataStorage array function write( uint16 index, uint32 blockTimestamp, int24 tick, uint128 liquidity, uint128 volumePerLiquidity ) external returns (uint16 indexUpdated); /// @notice Changes fee configuration for the pool function changeFeeConfiguration(bool zto, AdaptiveFee.Configuration calldata feeConfig) external; /// @notice Calculates gmean(volume/liquidity) for block /// @param liquidity The current in-range pool liquidity /// @param amount0 Total amount of swapped token0 /// @param amount1 Total amount of swapped token1 /// @return volumePerLiquidity gmean(volume/liquidity) capped by 100000 << 64 function calculateVolumePerLiquidity( uint128 liquidity, int256 amount0, int256 amount1 ) external pure returns (uint128 volumePerLiquidity); /// @return windowLength Length of window used to calculate averages function window() external view returns (uint32 windowLength); /// @notice Calculates fee based on combination of sigmoids /// @param time The current block.timestamp /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return feeZto The fee for ZtO swaps in hundredths of a bip, i.e. 1e-6 /// @return feeOtz The fee for OtZ swaps in hundredths of a bip, i.e. 1e-6 function getFees( uint32 time, int24 tick, uint16 index, uint128 liquidity ) external view returns (uint16 feeZto, uint16 feeOtz); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity =0.7.6; import './Constants.sol'; /// @title AdaptiveFee /// @notice Calculates fee based on combination of sigmoids library AdaptiveFee { // alpha1 + alpha2 + baseFee must be <= type(uint16).max struct Configuration { uint16 alpha1; // max value of the first sigmoid uint16 alpha2; // max value of the second sigmoid uint32 beta1; // shift along the x-axis for the first sigmoid uint32 beta2; // shift along the x-axis for the second sigmoid uint16 gamma1; // horizontal stretch factor for the first sigmoid uint16 gamma2; // horizontal stretch factor for the second sigmoid uint32 volumeBeta; // shift along the x-axis for the outer volume-sigmoid uint16 volumeGamma; // horizontal stretch factor the outer volume-sigmoid uint16 baseFee; // minimum possible fee } /// @notice Calculates fee based on formula: /// baseFee + sigmoidVolume(sigmoid1(volatility, volumePerLiquidity) + sigmoid2(volatility, volumePerLiquidity)) /// maximum value capped by baseFee + alpha1 + alpha2 function getFee( uint88 volatility, uint256 volumePerLiquidity, Configuration memory config ) internal pure returns (uint16 fee) { uint256 sumOfSigmoids = sigmoid(volatility, config.gamma1, config.alpha1, config.beta1) + sigmoid(volatility, config.gamma2, config.alpha2, config.beta2); if (sumOfSigmoids > type(uint16).max) { // should be impossible, just in case sumOfSigmoids = type(uint16).max; } return uint16(config.baseFee + sigmoid(volumePerLiquidity, config.volumeGamma, uint16(sumOfSigmoids), config.volumeBeta)); // safe since alpha1 + alpha2 + baseFee _must_ be <= type(uint16).max } /// @notice calculates α / (1 + e^( (β-x) / γ)) /// that is a sigmoid with a maximum value of α, x-shifted by β, and stretched by γ /// @dev returns uint256 for fuzzy testing. Guaranteed that the result is not greater than alpha function sigmoid( uint256 x, uint16 g, uint16 alpha, uint256 beta ) internal pure returns (uint256 res) { if (x > beta) { x = x - beta; if (x >= 6 * uint256(g)) return alpha; // so x < 19 bits uint256 g8 = uint256(g)**8; // < 128 bits (8*16) uint256 ex = exp(x, g, g8); // < 155 bits res = (alpha * ex) / (g8 + ex); // in worst case: (16 + 155 bits) / 155 bits // so res <= alpha } else { x = beta - x; if (x >= 6 * uint256(g)) return 0; // so x < 19 bits uint256 g8 = uint256(g)**8; // < 128 bits (8*16) uint256 ex = g8 + exp(x, g, g8); // < 156 bits res = (alpha * g8) / ex; // in worst case: (16 + 128 bits) / 156 bits // g8 <= ex, so res <= alpha } } /// @notice calculates e^(x/g) * g^8 in a series, since (around zero): /// e^x = 1 + x + x^2/2 + ... + x^n/n! + ... /// e^(x/g) = 1 + x/g + x^2/(2*g^2) + ... + x^(n)/(g^n * n!) + ... function exp( uint256 x, uint16 g, uint256 gHighestDegree ) internal pure returns (uint256 res) { // calculating: // g**8 + x * g**7 + (x**2 * g**6) / 2 + (x**3 * g**5) / 6 + (x**4 * g**4) / 24 + (x**5 * g**3) / 120 + (x**6 * g^2) / 720 + x**7 * g / 5040 + x**8 / 40320 // x**8 < 152 bits (19*8) and g**8 < 128 bits (8*16) // so each summand < 152 bits and res < 155 bits uint256 xLowestDegree = x; res = gHighestDegree; // g**8 gHighestDegree /= g; // g**7 res += xLowestDegree * gHighestDegree; gHighestDegree /= g; // g**6 xLowestDegree *= x; // x**2 res += (xLowestDegree * gHighestDegree) / 2; gHighestDegree /= g; // g**5 xLowestDegree *= x; // x**3 res += (xLowestDegree * gHighestDegree) / 6; gHighestDegree /= g; // g**4 xLowestDegree *= x; // x**4 res += (xLowestDegree * gHighestDegree) / 24; gHighestDegree /= g; // g**3 xLowestDegree *= x; // x**5 res += (xLowestDegree * gHighestDegree) / 120; gHighestDegree /= g; // g**2 xLowestDegree *= x; // x**6 res += (xLowestDegree * gHighestDegree) / 720; xLowestDegree *= x; // x**7 res += (xLowestDegree * g) / 5040 + (xLowestDegree * x) / (40320); } }
// SPDX-License-Identifier: GPL-2.0-or-later pragma solidity =0.7.6; library Constants { uint8 internal constant RESOLUTION = 96; uint256 internal constant Q96 = 0x1000000000000000000000000; uint256 internal constant Q128 = 0x100000000000000000000000000000000; // fee value in hundredths of a bip, i.e. 1e-6 uint16 internal constant BASE_FEE = 100; int24 internal constant MAX_TICK_SPACING = 500; // max(uint128) / (MAX_TICK - MIN_TICK) uint128 internal constant MAX_LIQUIDITY_PER_TICK = 191757638537527648490752896198553; uint32 internal constant MAX_LIQUIDITY_COOLDOWN = 1 days; uint8 internal constant MAX_COMMUNITY_FEE = 250; uint256 internal constant COMMUNITY_FEE_DENOMINATOR = 1000; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity =0.7.6; import './FullMath.sol'; /// @title DataStorage /// @notice Provides price, liquidity, volatility data useful for a wide variety of system designs /// @dev Instances of stored dataStorage data, "timepoints", are collected in the dataStorage array /// Timepoints are overwritten when the full length of the dataStorage array is populated. /// The most recent timepoint is available by passing 0 to getSingleTimepoint() library DataStorage { uint32 public constant WINDOW = 1 days; uint256 private constant UINT16_MODULO = 65536; struct Timepoint { bool initialized; // whether or not the timepoint is initialized uint32 blockTimestamp; // the block timestamp of the timepoint int56 tickCumulative; // the tick accumulator, i.e. tick * time elapsed since the pool was first initialized uint160 secondsPerLiquidityCumulative; // the seconds per liquidity since the pool was first initialized uint88 volatilityCumulative; // the volatility accumulator; overflow after ~34800 years is desired :) int24 averageTick; // average tick at this blockTimestamp uint144 volumePerLiquidityCumulative; // the gmean(volumes)/liquidity accumulator } /// @notice Calculates volatility between two sequential timepoints with resampling to 1 sec frequency /// @param dt Timedelta between timepoints, must be within uint32 range /// @param tick0 The tick at the left timepoint, must be within int24 range /// @param tick1 The tick at the right timepoint, must be within int24 range /// @param avgTick0 The average tick at the left timepoint, must be within int24 range /// @param avgTick1 The average tick at the right timepoint, must be within int24 range /// @return volatility The volatility between two sequential timepoints /// If the requirements for the parameters are met, it always fits 88 bits function _volatilityOnRange( int256 dt, int256 tick0, int256 tick1, int256 avgTick0, int256 avgTick1 ) internal pure returns (uint256 volatility) { // On the time interval from the previous timepoint to the current // we can represent tick and average tick change as two straight lines: // tick = k*t + b, where k and b are some constants // avgTick = p*t + q, where p and q are some constants // we want to get sum of (tick(t) - avgTick(t))^2 for every t in the interval (0; dt] // so: (tick(t) - avgTick(t))^2 = ((k*t + b) - (p*t + q))^2 = (k-p)^2 * t^2 + 2(k-p)(b-q)t + (b-q)^2 // since everything except t is a constant, we need to use progressions for t and t^2: // sum(t) for t from 1 to dt = dt*(dt + 1)/2 = sumOfSequence // sum(t^2) for t from 1 to dt = dt*(dt+1)*(2dt + 1)/6 = sumOfSquares // so result will be: (k-p)^2 * sumOfSquares + 2(k-p)(b-q)*sumOfSequence + dt*(b-q)^2 int256 K = (tick1 - tick0) - (avgTick1 - avgTick0); // (k - p)*dt int256 B = (tick0 - avgTick0) * dt; // (b - q)*dt int256 sumOfSquares = (dt * (dt + 1) * (2 * dt + 1)); // sumOfSquares * 6 int256 sumOfSequence = (dt * (dt + 1)); // sumOfSequence * 2 volatility = uint256((K**2 * sumOfSquares + 6 * B * K * sumOfSequence + 6 * dt * B**2) / (6 * dt**2)); } /// @notice Transforms a previous timepoint into a new timepoint, given the passage of time and the current tick and liquidity values /// @dev blockTimestamp _must_ be chronologically equal to or greater than last.blockTimestamp, safe for 0 or 1 overflows /// @param last The specified timepoint to be used in creation of new timepoint /// @param blockTimestamp The timestamp of the new timepoint /// @param tick The active tick at the time of the new timepoint /// @param prevTick The active tick at the time of the last timepoint /// @param liquidity The total in-range liquidity at the time of the new timepoint /// @param averageTick The average tick at the time of the new timepoint /// @param volumePerLiquidity The gmean(volumes)/liquidity at the time of the new timepoint /// @return Timepoint The newly populated timepoint function createNewTimepoint( Timepoint memory last, uint32 blockTimestamp, int24 tick, int24 prevTick, uint128 liquidity, int24 averageTick, uint128 volumePerLiquidity ) private pure returns (Timepoint memory) { uint32 delta = blockTimestamp - last.blockTimestamp; last.initialized = true; last.blockTimestamp = blockTimestamp; last.tickCumulative += int56(tick) * delta; last.secondsPerLiquidityCumulative += ((uint160(delta) << 128) / (liquidity > 0 ? liquidity : 1)); // just timedelta if liquidity == 0 last.volatilityCumulative += uint88(_volatilityOnRange(delta, prevTick, tick, last.averageTick, averageTick)); // always fits 88 bits last.averageTick = averageTick; last.volumePerLiquidityCumulative += volumePerLiquidity; return last; } /// @notice comparator for 32-bit timestamps /// @dev safe for 0 or 1 overflows, a and b _must_ be chronologically before or equal to currentTime /// @param a A comparison timestamp from which to determine the relative position of `currentTime` /// @param b From which to determine the relative position of `currentTime` /// @param currentTime A timestamp truncated to 32 bits /// @return res Whether `a` is chronologically <= `b` function lteConsideringOverflow( uint32 a, uint32 b, uint32 currentTime ) private pure returns (bool res) { res = a > currentTime; if (res == b > currentTime) res = a <= b; // if both are on the same side } /// @dev guaranteed that the result is within the bounds of int24 /// returns int256 for fuzzy tests function _getAverageTick( Timepoint[UINT16_MODULO] storage self, uint32 time, int24 tick, uint16 index, uint16 oldestIndex, uint32 lastTimestamp, int56 lastTickCumulative ) internal view returns (int256 avgTick) { uint32 oldestTimestamp = self[oldestIndex].blockTimestamp; int56 oldestTickCumulative = self[oldestIndex].tickCumulative; if (lteConsideringOverflow(oldestTimestamp, time - WINDOW, time)) { if (lteConsideringOverflow(lastTimestamp, time - WINDOW, time)) { index -= 1; // considering underflow Timepoint storage startTimepoint = self[index]; avgTick = startTimepoint.initialized ? (lastTickCumulative - startTimepoint.tickCumulative) / (lastTimestamp - startTimepoint.blockTimestamp) : tick; } else { Timepoint memory startOfWindow = getSingleTimepoint(self, time, WINDOW, tick, index, oldestIndex, 0); // current-WINDOW last current // _________*____________*_______*_ // |||||||||||| avgTick = (lastTickCumulative - startOfWindow.tickCumulative) / (lastTimestamp - time + WINDOW); } } else { avgTick = (lastTimestamp == oldestTimestamp) ? tick : (lastTickCumulative - oldestTickCumulative) / (lastTimestamp - oldestTimestamp); } } /// @notice Fetches the timepoints beforeOrAt and atOrAfter a target, i.e. where [beforeOrAt, atOrAfter] is satisfied. /// The result may be the same timepoint, or adjacent timepoints. /// @dev The answer must be contained in the array, used when the target is located within the stored timepoint /// boundaries: older than the most recent timepoint and younger, or the same age as, the oldest timepoint /// @param self The stored dataStorage array /// @param time The current block.timestamp /// @param target The timestamp at which the reserved timepoint should be for /// @param lastIndex The index of the timepoint that was most recently written to the timepoints array /// @param oldestIndex The index of the oldest timepoint in the timepoints array /// @return beforeOrAt The timepoint recorded before, or at, the target /// @return atOrAfter The timepoint recorded at, or after, the target function binarySearch( Timepoint[UINT16_MODULO] storage self, uint32 time, uint32 target, uint16 lastIndex, uint16 oldestIndex ) private view returns (Timepoint storage beforeOrAt, Timepoint storage atOrAfter) { uint256 left = oldestIndex; // oldest timepoint uint256 right = lastIndex >= oldestIndex ? lastIndex : lastIndex + UINT16_MODULO; // newest timepoint considering one index overflow uint256 current = (left + right) >> 1; // "middle" point between the boundaries do { beforeOrAt = self[uint16(current)]; // checking the "middle" point between the boundaries (bool initializedBefore, uint32 timestampBefore) = (beforeOrAt.initialized, beforeOrAt.blockTimestamp); if (initializedBefore) { if (lteConsideringOverflow(timestampBefore, target, time)) { // is current point before or at `target`? atOrAfter = self[uint16(current + 1)]; // checking the next point after "middle" (bool initializedAfter, uint32 timestampAfter) = (atOrAfter.initialized, atOrAfter.blockTimestamp); if (initializedAfter) { if (lteConsideringOverflow(target, timestampAfter, time)) { // is the "next" point after or at `target`? return (beforeOrAt, atOrAfter); // the only fully correct way to finish } left = current + 1; // "next" point is before the `target`, so looking in the right half } else { // beforeOrAt is initialized and <= target, and next timepoint is uninitialized // should be impossible if initial boundaries and `target` are correct return (beforeOrAt, beforeOrAt); } } else { right = current - 1; // current point is after the `target`, so looking in the left half } } else { // we've landed on an uninitialized timepoint, keep searching higher // should be impossible if initial boundaries and `target` are correct left = current + 1; } current = (left + right) >> 1; // calculating the new "middle" point index after updating the bounds } while (true); atOrAfter = beforeOrAt; // code is unreachable, to suppress compiler warning assert(false); } /// @dev Reverts if an timepoint at or before the desired timepoint timestamp does not exist. /// 0 may be passed as `secondsAgo' to return the current cumulative values. /// If called with a timestamp falling between two timepoints, returns the counterfactual accumulator values /// at exactly the timestamp between the two timepoints. /// @param self The stored dataStorage array /// @param time The current block timestamp /// @param secondsAgo The amount of time to look back, in seconds, at which point to return an timepoint /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param oldestIndex The index of the oldest timepoint /// @param liquidity The current in-range pool liquidity /// @return targetTimepoint desired timepoint or it's approximation function getSingleTimepoint( Timepoint[UINT16_MODULO] storage self, uint32 time, uint32 secondsAgo, int24 tick, uint16 index, uint16 oldestIndex, uint128 liquidity ) internal view returns (Timepoint memory targetTimepoint) { uint32 target = time - secondsAgo; // if target is newer than last timepoint if (secondsAgo == 0 || lteConsideringOverflow(self[index].blockTimestamp, target, time)) { Timepoint memory last = self[index]; if (last.blockTimestamp == target) { return last; } else { // otherwise, we need to add new timepoint int24 avgTick = int24(_getAverageTick(self, time, tick, index, oldestIndex, last.blockTimestamp, last.tickCumulative)); int24 prevTick = tick; { if (index != oldestIndex) { Timepoint memory prevLast; Timepoint storage _prevLast = self[index - 1]; // considering index underflow prevLast.blockTimestamp = _prevLast.blockTimestamp; prevLast.tickCumulative = _prevLast.tickCumulative; prevTick = int24((last.tickCumulative - prevLast.tickCumulative) / (last.blockTimestamp - prevLast.blockTimestamp)); } } return createNewTimepoint(last, target, tick, prevTick, liquidity, avgTick, 0); } } require(lteConsideringOverflow(self[oldestIndex].blockTimestamp, target, time), 'OLD'); (Timepoint memory beforeOrAt, Timepoint memory atOrAfter) = binarySearch(self, time, target, index, oldestIndex); if (target == atOrAfter.blockTimestamp) { return atOrAfter; // we're at the right boundary } if (target != beforeOrAt.blockTimestamp) { // we're in the middle uint32 timepointTimeDelta = atOrAfter.blockTimestamp - beforeOrAt.blockTimestamp; uint32 targetDelta = target - beforeOrAt.blockTimestamp; // For gas savings the resulting point is written to beforeAt beforeOrAt.tickCumulative += ((atOrAfter.tickCumulative - beforeOrAt.tickCumulative) / timepointTimeDelta) * targetDelta; beforeOrAt.secondsPerLiquidityCumulative += uint160( (uint256(atOrAfter.secondsPerLiquidityCumulative - beforeOrAt.secondsPerLiquidityCumulative) * targetDelta) / timepointTimeDelta ); beforeOrAt.volatilityCumulative += ((atOrAfter.volatilityCumulative - beforeOrAt.volatilityCumulative) / timepointTimeDelta) * targetDelta; beforeOrAt.volumePerLiquidityCumulative += ((atOrAfter.volumePerLiquidityCumulative - beforeOrAt.volumePerLiquidityCumulative) / timepointTimeDelta) * targetDelta; } // we're at the left boundary or at the middle return beforeOrAt; } /// @notice Returns the accumulator values as of each time seconds ago from the given time in the array of `secondsAgos` /// @dev Reverts if `secondsAgos` > oldest timepoint /// @param self The stored dataStorage array /// @param time The current block.timestamp /// @param secondsAgos Each amount of time to look back, in seconds, at which point to return an timepoint /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return tickCumulatives The tick * time elapsed since the pool was first initialized, as of each `secondsAgo` /// @return secondsPerLiquidityCumulatives The cumulative seconds / max(1, liquidity) since the pool was first initialized, as of each `secondsAgo` /// @return volatilityCumulatives The cumulative volatility values since the pool was first initialized, as of each `secondsAgo` /// @return volumePerAvgLiquiditys The cumulative volume per liquidity values since the pool was first initialized, as of each `secondsAgo` function getTimepoints( Timepoint[UINT16_MODULO] storage self, uint32 time, uint32[] memory secondsAgos, int24 tick, uint16 index, uint128 liquidity ) internal view returns ( int56[] memory tickCumulatives, uint160[] memory secondsPerLiquidityCumulatives, uint112[] memory volatilityCumulatives, uint256[] memory volumePerAvgLiquiditys ) { tickCumulatives = new int56[](secondsAgos.length); secondsPerLiquidityCumulatives = new uint160[](secondsAgos.length); volatilityCumulatives = new uint112[](secondsAgos.length); volumePerAvgLiquiditys = new uint256[](secondsAgos.length); uint16 oldestIndex; // check if we have overflow in the past uint16 nextIndex = index + 1; // considering overflow if (self[nextIndex].initialized) { oldestIndex = nextIndex; } Timepoint memory current; for (uint256 i = 0; i < secondsAgos.length; i++) { current = getSingleTimepoint(self, time, secondsAgos[i], tick, index, oldestIndex, liquidity); (tickCumulatives[i], secondsPerLiquidityCumulatives[i], volatilityCumulatives[i], volumePerAvgLiquiditys[i]) = ( current.tickCumulative, current.secondsPerLiquidityCumulative, current.volatilityCumulative, current.volumePerLiquidityCumulative ); } } /// @notice Returns average volatility in the range from time-WINDOW to time /// @param self The stored dataStorage array /// @param time The current block.timestamp /// @param tick The current tick /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param liquidity The current in-range pool liquidity /// @return volatilityAverage The average volatility in the recent range /// @return volumePerLiqAverage The average volume per liquidity in the recent range function getAverages( Timepoint[UINT16_MODULO] storage self, uint32 time, int24 tick, uint16 index, uint128 liquidity ) internal view returns (uint88 volatilityAverage, uint256 volumePerLiqAverage) { uint16 oldestIndex; Timepoint storage oldest = self[0]; uint16 nextIndex = index + 1; // considering overflow if (self[nextIndex].initialized) { oldest = self[nextIndex]; oldestIndex = nextIndex; } Timepoint memory endOfWindow = getSingleTimepoint(self, time, 0, tick, index, oldestIndex, liquidity); uint32 oldestTimestamp = oldest.blockTimestamp; if (lteConsideringOverflow(oldestTimestamp, time - WINDOW, time)) { Timepoint memory startOfWindow = getSingleTimepoint(self, time, WINDOW, tick, index, oldestIndex, liquidity); return ( (endOfWindow.volatilityCumulative - startOfWindow.volatilityCumulative) / WINDOW, uint256(endOfWindow.volumePerLiquidityCumulative - startOfWindow.volumePerLiquidityCumulative) >> 57 ); } else if (time != oldestTimestamp) { uint88 _oldestVolatilityCumulative = oldest.volatilityCumulative; uint144 _oldestVolumePerLiquidityCumulative = oldest.volumePerLiquidityCumulative; return ( (endOfWindow.volatilityCumulative - _oldestVolatilityCumulative) / (time - oldestTimestamp), uint256(endOfWindow.volumePerLiquidityCumulative - _oldestVolumePerLiquidityCumulative) >> 57 ); } } /// @notice Initialize the dataStorage array by writing the first slot. Called once for the lifecycle of the timepoints array /// @param self The stored dataStorage array /// @param time The time of the dataStorage initialization, via block.timestamp truncated to uint32 /// @param tick Initial tick function initialize( Timepoint[UINT16_MODULO] storage self, uint32 time, int24 tick ) internal { require(!self[0].initialized); self[0].initialized = true; self[0].blockTimestamp = time; self[0].averageTick = tick; } /// @notice Writes an dataStorage timepoint to the array /// @dev Writable at most once per block. Index represents the most recently written element. index must be tracked externally. /// @param self The stored dataStorage array /// @param index The index of the timepoint that was most recently written to the timepoints array /// @param blockTimestamp The timestamp of the new timepoint /// @param tick The active tick at the time of the new timepoint /// @param liquidity The total in-range liquidity at the time of the new timepoint /// @param volumePerLiquidity The gmean(volumes)/liquidity at the time of the new timepoint /// @return indexUpdated The new index of the most recently written element in the dataStorage array function write( Timepoint[UINT16_MODULO] storage self, uint16 index, uint32 blockTimestamp, int24 tick, uint128 liquidity, uint128 volumePerLiquidity ) internal returns (uint16 indexUpdated) { Timepoint storage _last = self[index]; // early return if we've already written an timepoint this block if (_last.blockTimestamp == blockTimestamp) { return index; } Timepoint memory last = _last; // get next index considering overflow indexUpdated = index + 1; uint16 oldestIndex; // check if we have overflow in the past if (self[indexUpdated].initialized) { oldestIndex = indexUpdated; } int24 avgTick = int24(_getAverageTick(self, blockTimestamp, tick, index, oldestIndex, last.blockTimestamp, last.tickCumulative)); int24 prevTick = tick; if (index != oldestIndex) { Timepoint storage _prevLast = self[index - 1]; // considering index underflow uint32 _prevLastBlockTimestamp = _prevLast.blockTimestamp; int56 _prevLastTickCumulative = _prevLast.tickCumulative; prevTick = int24((last.tickCumulative - _prevLastTickCumulative) / (last.blockTimestamp - _prevLastBlockTimestamp)); } self[indexUpdated] = createNewTimepoint(last, blockTimestamp, tick, prevTick, liquidity, avgTick, volumePerLiquidity); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.4.0 || ^0.5.0 || ^0.6.0 || ^0.7.0; /// @title Contains 512-bit math functions /// @notice Facilitates multiplication and division that can have overflow of an intermediate value without any loss of precision /// @dev Handles "phantom overflow" i.e., allows multiplication and division where an intermediate value overflows 256 bits library FullMath { /// @notice Calculates floor(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result /// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv function mulDiv( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { // 512-bit multiply [prod1 prod0] = a * b // 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 = prod1 * 2**256 + prod0 uint256 prod0 = a * b; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(a, b, not(0)) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Make sure the result is less than 2**256. // Also prevents denominator == 0 require(denominator > prod1); // Handle non-overflow cases, 256 by 256 division if (prod1 == 0) { assembly { result := div(prod0, denominator) } return result; } /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0] // Compute remainder using mulmod // Subtract 256 bit remainder from 512 bit number assembly { let remainder := mulmod(a, b, denominator) prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator // Compute largest power of two divisor of denominator. // Always >= 1. uint256 twos = -denominator & denominator; // Divide denominator by power of two assembly { denominator := div(denominator, twos) } // Divide [prod1 prod0] by the factors of two assembly { prod0 := div(prod0, twos) } // Shift in bits from prod1 into prod0. For this we need // to flip `twos` such that it is 2**256 / twos. // If twos is zero, then it becomes one assembly { twos := add(div(sub(0, twos), twos), 1) } prod0 |= prod1 * twos; // 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 // correct for four bits. That is, denominator * inv = 1 mod 2**4 uint256 inv = (3 * denominator) ^ 2; // 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 *= 2 - denominator * inv; // inverse mod 2**8 inv *= 2 - denominator * inv; // inverse mod 2**16 inv *= 2 - denominator * inv; // inverse mod 2**32 inv *= 2 - denominator * inv; // inverse mod 2**64 inv *= 2 - denominator * inv; // inverse mod 2**128 inv *= 2 - denominator * inv; // 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 * inv; return result; } /// @notice Calculates ceil(a×b÷denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 /// @param a The multiplicand /// @param b The multiplier /// @param denominator The divisor /// @return result The 256-bit result function mulDivRoundingUp( uint256 a, uint256 b, uint256 denominator ) internal pure returns (uint256 result) { if (a == 0 || ((result = a * b) / a == b)) { require(denominator > 0); assembly { result := add(div(result, denominator), gt(mod(result, denominator), 0)) } } else { result = mulDiv(a, b, denominator); if (mulmod(a, b, denominator) > 0) { require(result < type(uint256).max); result++; } } } /// @notice Returns ceil(x / y) /// @dev division by 0 has unspecified behavior, and must be checked externally /// @param x The dividend /// @param y The divisor /// @return z The quotient, ceil(x / y) function divRoundingUp(uint256 x, uint256 y) internal pure returns (uint256 z) { assembly { z := add(div(x, y), gt(mod(x, y), 0)) } } }
// SPDX-License-Identifier: GPL-3.0-or-later pragma solidity ^0.5.0 || ^0.6.0 || ^0.7.0 || ^0.8.0; library Sqrt { /// @notice Gets the square root of the absolute value of the parameter function sqrtAbs(int256 _x) internal pure returns (uint256 result) { // get abs value int256 mask = _x >> (256 - 1); uint256 x = uint256((_x ^ mask) - mask); if (x == 0) result = 0; else { uint256 xx = x; uint256 r = 1; if (xx >= 0x100000000000000000000000000000000) { xx >>= 128; r <<= 64; } if (xx >= 0x10000000000000000) { xx >>= 64; r <<= 32; } if (xx >= 0x100000000) { xx >>= 32; r <<= 16; } if (xx >= 0x10000) { xx >>= 16; r <<= 8; } if (xx >= 0x100) { xx >>= 8; r <<= 4; } if (xx >= 0x10) { xx >>= 4; r <<= 2; } if (xx >= 0x8) { r <<= 1; } r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; r = (r + x / r) >> 1; // @dev Seven iterations should be enough. uint256 r1 = x / r; result = r < r1 ? r : r1; } } }
{ "optimizer": { "enabled": true, "runs": 0 }, "metadata": { "bytecodeHash": "none", "useLiteralContent": true }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"address","name":"_poolDeployer","type":"address"},{"internalType":"address","name":"_vaultAddress","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"newDefaultCommunityFee","type":"uint8"}],"name":"DefaultCommunityFee","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newFarmingAddress","type":"address"}],"name":"FarmingAddress","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint16","name":"alpha1","type":"uint16"},{"indexed":false,"internalType":"uint16","name":"alpha2","type":"uint16"},{"indexed":false,"internalType":"uint32","name":"beta1","type":"uint32"},{"indexed":false,"internalType":"uint32","name":"beta2","type":"uint32"},{"indexed":false,"internalType":"uint16","name":"gamma1","type":"uint16"},{"indexed":false,"internalType":"uint16","name":"gamma2","type":"uint16"},{"indexed":false,"internalType":"uint32","name":"volumeBeta","type":"uint32"},{"indexed":false,"internalType":"uint16","name":"volumeGamma","type":"uint16"},{"indexed":false,"internalType":"uint16","name":"baseFee","type":"uint16"}],"name":"FeeConfiguration","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"Owner","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"token0","type":"address"},{"indexed":true,"internalType":"address","name":"token1","type":"address"},{"indexed":false,"internalType":"address","name":"pool","type":"address"}],"name":"Pool","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"newVaultAddress","type":"address"}],"name":"VaultAddress","type":"event"},{"inputs":[],"name":"baseFeeConfiguration","outputs":[{"internalType":"uint16","name":"alpha1","type":"uint16"},{"internalType":"uint16","name":"alpha2","type":"uint16"},{"internalType":"uint32","name":"beta1","type":"uint32"},{"internalType":"uint32","name":"beta2","type":"uint32"},{"internalType":"uint16","name":"gamma1","type":"uint16"},{"internalType":"uint16","name":"gamma2","type":"uint16"},{"internalType":"uint32","name":"volumeBeta","type":"uint32"},{"internalType":"uint16","name":"volumeGamma","type":"uint16"},{"internalType":"uint16","name":"baseFee","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"tokenA","type":"address"},{"internalType":"address","name":"tokenB","type":"address"}],"name":"createPool","outputs":[{"internalType":"address","name":"pool","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"defaultCommunityFee","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"farmingAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"}],"name":"poolByPair","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"poolDeployer","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"alpha1","type":"uint16"},{"internalType":"uint16","name":"alpha2","type":"uint16"},{"internalType":"uint32","name":"beta1","type":"uint32"},{"internalType":"uint32","name":"beta2","type":"uint32"},{"internalType":"uint16","name":"gamma1","type":"uint16"},{"internalType":"uint16","name":"gamma2","type":"uint16"},{"internalType":"uint32","name":"volumeBeta","type":"uint32"},{"internalType":"uint16","name":"volumeGamma","type":"uint16"},{"internalType":"uint16","name":"baseFee","type":"uint16"}],"name":"setBaseFeeConfiguration","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"newDefaultCommunityFee","type":"uint8"}],"name":"setDefaultCommunityFee","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_farmingAddress","type":"address"}],"name":"setFarmingAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"setOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_vaultAddress","type":"address"}],"name":"setVaultAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"vaultAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
0000000000000000000000006a63830e24f9a2f9c295fb2150107d0390ed144800000000000000000000000058095979b412a366687ca05cbe85ff56241be21f
-----Decoded View---------------
Arg [0] : _poolDeployer (address): 0x6a63830E24f9a2F9C295fB2150107D0390Ed1448
Arg [1] : _vaultAddress (address): 0x58095979B412a366687cA05CbE85fF56241bE21f
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 0000000000000000000000006a63830e24f9a2f9c295fb2150107d0390ed1448
Arg [1] : 00000000000000000000000058095979b412a366687ca05cbe85ff56241be21f
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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.