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StableMath

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State Variables​

_MIN_AMP​

uint256 internal constant _MIN_AMP = 1

_MAX_AMP​

uint256 internal constant _MAX_AMP = 5000

_AMP_PRECISION​

uint256 internal constant _AMP_PRECISION = 1e3

_MAX_STABLE_TOKENS​

uint256 internal constant _MAX_STABLE_TOKENS = 5

Functions​

_calculateInvariant​

function _calculateInvariant(uint256 amplificationParameter, uint256[] memory balances)
    internal
    pure
    returns (uint256);

_calcOutGivenIn​

function _calcOutGivenIn(
    uint256 amplificationParameter,
    uint256[] memory balances,
    uint256 tokenIndexIn,
    uint256 tokenIndexOut,
    uint256 tokenAmountIn,
    uint256 invariant
) internal pure returns (uint256);

_calcInGivenOut​

function _calcInGivenOut(
    uint256 amplificationParameter,
    uint256[] memory balances,
    uint256 tokenIndexIn,
    uint256 tokenIndexOut,
    uint256 tokenAmountOut,
    uint256 invariant
) internal pure returns (uint256);

_calcBptOutGivenExactTokensIn​

function _calcBptOutGivenExactTokensIn(
    uint256 amp,
    uint256[] memory balances,
    uint256[] memory amountsIn,
    uint256 bptTotalSupply,
    uint256 currentInvariant,
    uint256 swapFeePercentage
) internal pure returns (uint256);

_calcTokenInGivenExactBptOut​

function _calcTokenInGivenExactBptOut(
    uint256 amp,
    uint256[] memory balances,
    uint256 tokenIndex,
    uint256 bptAmountOut,
    uint256 bptTotalSupply,
    uint256 currentInvariant,
    uint256 swapFeePercentage
) internal pure returns (uint256);

_calcBptInGivenExactTokensOut​

function _calcBptInGivenExactTokensOut(
    uint256 amp,
    uint256[] memory balances,
    uint256[] memory amountsOut,
    uint256 bptTotalSupply,
    uint256 currentInvariant,
    uint256 swapFeePercentage
) internal pure returns (uint256);

_calcTokenOutGivenExactBptIn​

function _calcTokenOutGivenExactBptIn(
    uint256 amp,
    uint256[] memory balances,
    uint256 tokenIndex,
    uint256 bptAmountIn,
    uint256 bptTotalSupply,
    uint256 currentInvariant,
    uint256 swapFeePercentage
) internal pure returns (uint256);

_getTokenBalanceGivenInvariantAndAllOtherBalances​

function _getTokenBalanceGivenInvariantAndAllOtherBalances(
    uint256 amplificationParameter,
    uint256[] memory balances,
    uint256 invariant,
    uint256 tokenIndex
) internal pure returns (uint256);