pragma solidity ^0.4.24; /** * @title Math * @dev Assorted math operations */ library Math { function max(uint256 _a, uint256 _b) internal pure returns (uint256) { return _a >= _b ? _a : _b; } function min(uint256 _a, uint256 _b) internal pure returns (uint256) { return _a < _b ? _a : _b; } }