| /* -*- 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 |
| * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| |
| //----------------------------------------------------------------------------- |
| 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'); |