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Math

Math​

divide​

function divide(uint256 a, uint256 b, bool roundingUp) internal pure returns (uint256 ret)

lnWad​

function lnWad(int256 x) internal pure returns (int256 r)

Returns ln(x), denominated in WAD. Credit to Remco Bloemen under MIT license: https://2π.com/22/exp-ln