eliott/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird synced 2026-05-03 13:02:09 +02:00
Code Issues Packages Projects Releases Wiki Activity

LibJS: Add support for floating point modulous

Browse Source 
This change implements floating point mod based on the algorithm
used in LibM's fmod() implementation. To avoid taking a dependency
on LibM from LibJS I reimplemented the formula in LibJS.

I've incuded some of the example MDM test cases as well.
This surfaced and issue handling NaN which I've fixed as well.
This commit is contained in:
Brian Gianforcaro
2020-04-05 01:32:04 -07:00
committed by Andreas Kling
parent 41bfff1abe
commit b8cef3a2d3
Notes: sideshowbarker 2024-07-19 07:54:36 +09:00 
Author: https://github.com/bgianfo
Commit: https://github.com/SerenityOS/serenity/commit/b8cef3a2d36
Pull-request: https://github.com/SerenityOS/serenity/pull/1637
2 changed files with 22 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
Libraries/LibJS/Tests/modulo-basic.js
View File

@@ -2,6 +2,20 @@ function assert(x) { if (!x) throw 1; }
try {
assert(10 % 3 === 1);
assert(10.5 % 2.5 === 0.5);
assert(-0.99 % 0.99 === -0);
// Examples form MDN:
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Arithmetic_Operators
assert(12 % 5 === 2);
assert(-1 % 2 === -1);
assert(1 % -2 === 1);
assert(isNaN(NaN % 2);
assert(1 % 2 === 1);
assert(2 % 3 === 2);
assert(-4 % 2 === -0);
assert(5.5 % 2 === 1.5);
console.log("PASS");
} catch (e) {
console.log("FAIL: " + e);