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Add SignedMath with math utilities for signed integers (#2686)

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* add contract and tests

* avoid implicit cast

* add test cases

* fix test names

* modify avarage and add tests

* improve signed average formula

* fix lint

* better average formula

* refactor signed average testing

* add doc and changelog entry

* Update contracts/utils/math/SignedMath.sol

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>

* remove ceilDiv

Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com>
Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
This commit is contained in:
rotcivegaf
2022-01-12 16:08:59 -03:00
committed by GitHub
parent dee772a55f
commit 3458c1e854
5 changed files with 131 additions and 0 deletions
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contracts/mocks/SignedMathMock.sol Normal file
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/math/SignedMath.sol";
contract SignedMathMock {
function max(int256 a, int256 b) public pure returns (int256) {
return SignedMath.max(a, b);
}
function min(int256 a, int256 b) public pure returns (int256) {
return SignedMath.min(a, b);
}
function average(int256 a, int256 b) public pure returns (int256) {
return SignedMath.average(a, b);
}
}