Source code
Revision control
Copy as Markdown
Other Tools
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
//-----------------------------------------------------------------------------
var BUGNUMBER = 329383;
var summary = 'Math copysign issues';
var actual = '';
var expect = '';
printBugNumber(BUGNUMBER);
printStatus (summary);
var inputs = [
-Infinity,
-10.01,
-9.01,
-8.01,
-7.01,
-6.01,
-5.01,
-4.01,
-Math.PI,
-3.01,
-2.01,
-1.01,
-0.5,
-0.49,
-0.01,
-0,
0,
+0,
0.01,
0.49,
0.50,
0,
1.01,
2.01,
3.01,
Math.PI,
4.01,
5.01,
6.01,
7.01,
8.01,
9.01,
10.01,
Infinity
];
var iinput;
for (iinput = 0; iinput < inputs.length; iinput++)
{
var input = inputs[iinput];
reportCompare(Math.round(input),
emulateRound(input),
summary + ': Math.round(' + input + ')');
}
reportCompare(isNaN(Math.round(NaN)),
isNaN(emulateRound(NaN)),
summary + ': Math.round(' + input + ')');
function emulateRound(x)
{
if (!isFinite(x) || x === 0) return x
if (-0.5 <= x && x < 0) return -0
return Math.floor(x + 0.5)
}
var z;
z = Math.min(-0, 0);
reportCompare(-Math.PI, Math.atan2(z, z), summary + ': Math.atan2(-0, -0)');
reportCompare(-Infinity, 1/z, summary + ': 1/-0');
z = Math.max(-0, 0);
reportCompare(0, Math.atan2(z, z), summary + ': Math.atan2(0, 0)');
reportCompare(Infinity, 1/z, summary + ': 1/0');