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added feature availability info to documentation

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This commit is contained in:
Francisco Giordano
2019-10-29 16:57:06 -03:00
parent 76a1d7a3cd
commit 9113335cb3
5 changed files with 16 additions and 0 deletions
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6
contracts/math/SafeMath.sol
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@ -54,6 +54,8 @@ library SafeMath {
*
* NOTE: This is a feature of the next version of OpenZeppelin Contracts.
* @dev Get it via `npm install @openzeppelin/contracts@next`.
*
* _Available since v2.4.0._
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
@ -113,6 +115,8 @@ library SafeMath {
* NOTE: This is a feature of the next version of OpenZeppelin Contracts.
* @dev Get it via `npm install @openzeppelin/contracts@next`.
*
* _Available since v2.4.0._
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
@ -151,6 +155,8 @@ library SafeMath {
*
* NOTE: This is a feature of the next version of OpenZeppelin Contracts.
* @dev Get it via `npm install @openzeppelin/contracts@next`.
*
* _Available since v2.4.0._
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);