js/src/tests/js1_5/Regress/regress-211590.js@6474c204b198 (annotated)
js/src/tests/js1_5/Regress/regress-211590.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | //----------------------------------------------------------------------------- |
| michael@0 | 7 | var BUGNUMBER = 211590; |
| michael@0 | 8 | var summary = 'Math.random should be random'; |
| michael@0 | 9 | var actual = ''; |
| michael@0 | 10 | var expect = 'between 47.5% and 52.5%'; |
| michael@0 | 11 | |
| michael@0 | 12 | printBugNumber(BUGNUMBER); |
| michael@0 | 13 | printStatus (summary); |
| michael@0 | 14 | |
| michael@0 | 15 | var r = Math.random; |
| michael@0 | 16 | var c = Math.pow( 2, 53 ); |
| michael@0 | 17 | |
| michael@0 | 18 | var n = 10000; |
| michael@0 | 19 | var odd1 = 0; |
| michael@0 | 20 | var odd2 = 0; |
| michael@0 | 21 | |
| michael@0 | 22 | for ( var i = 0; i < n; ++i ) |
| michael@0 | 23 | { |
| michael@0 | 24 | var v= r() * c; |
| michael@0 | 25 | if ( v & 1 ) |
| michael@0 | 26 | ++odd1; |
| michael@0 | 27 | if ( v - c + c & 1 ) |
| michael@0 | 28 | ++odd2; |
| michael@0 | 29 | } |
| michael@0 | 30 | |
| michael@0 | 31 | odd1 *= 100 / n; |
| michael@0 | 32 | odd2 *= 100 / n; |
| michael@0 | 33 | |
| michael@0 | 34 | if (odd1 >= 47.5 && odd1 <= 52.5) |
| michael@0 | 35 | { |
| michael@0 | 36 | actual = expect; |
| michael@0 | 37 | } |
| michael@0 | 38 | else |
| michael@0 | 39 | { |
| michael@0 | 40 | actual = ' is ' + odd1.toFixed(3); |
| michael@0 | 41 | } |
| michael@0 | 42 | |
| michael@0 | 43 | reportCompare(expect, actual, summary); |
| michael@0 | 44 | |
| michael@0 | 45 | if (odd2 >= 47.5 && odd2 <= 52.5) |
| michael@0 | 46 | { |
| michael@0 | 47 | actual = expect; |
| michael@0 | 48 | } |
| michael@0 | 49 | else |
| michael@0 | 50 | { |
| michael@0 | 51 | actual = ' is ' + odd2.toFixed(3); |
| michael@0 | 52 | } |
| michael@0 | 53 | |
| michael@0 | 54 | reportCompare(expect, actual, summary); |
