43 lines
1.1 KiB
Solidity
43 lines
1.1 KiB
Solidity
// SPDX-License-Identifier: MIT
|
|
|
|
pragma solidity ^0.8.0;
|
|
|
|
/**
|
|
* @dev Standard math utilities missing in the Solidity language.
|
|
*/
|
|
library Math {
|
|
/**
|
|
* @dev Returns the largest of two numbers.
|
|
*/
|
|
function max(uint256 a, uint256 b) internal pure returns (uint256) {
|
|
return a >= b ? a : b;
|
|
}
|
|
|
|
/**
|
|
* @dev Returns the smallest of two numbers.
|
|
*/
|
|
function min(uint256 a, uint256 b) internal pure returns (uint256) {
|
|
return a < b ? a : b;
|
|
}
|
|
|
|
/**
|
|
* @dev Returns the average of two numbers. The result is rounded towards
|
|
* zero.
|
|
*/
|
|
function average(uint256 a, uint256 b) internal pure returns (uint256) {
|
|
// (a + b) / 2 can overflow.
|
|
return (a & b) + (a ^ b) / 2;
|
|
}
|
|
|
|
/**
|
|
* @dev Returns the ceiling of the division of two numbers.
|
|
*
|
|
* This differs from standard division with `/` in that it rounds up instead
|
|
* of rounding down.
|
|
*/
|
|
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
|
|
// (a + b - 1) / b can overflow on addition, so we distribute.
|
|
return a / b + (a % b == 0 ? 0 : 1);
|
|
}
|
|
}
|