32 lines
777 B
Solidity
32 lines
777 B
Solidity
pragma solidity ^0.4.24;
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/**
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* @title Math
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* @dev Assorted math operations
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*/
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library Math {
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/**
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* @dev Returns the largest of two numbers.
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*/
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function max(uint256 a, uint256 b) internal pure returns (uint256) {
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return a >= b ? a : b;
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}
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/**
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* @dev Returns the smallest of two numbers.
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*/
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function min(uint256 a, uint256 b) internal pure returns (uint256) {
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return a < b ? a : b;
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}
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/**
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* @dev Calculates the average of two numbers. Since these are integers,
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* averages of an even and odd number cannot be represented, and will be
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* rounded down.
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*/
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function average(uint256 a, uint256 b) internal pure returns (uint256) {
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// (a + b) / 2 can overflow, so we distribute
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return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
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}
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}
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