The Tor Browser / file comparison
comparison: js/src/tests/js1_5/Regress/regress-211590.js
js/src/tests/js1_5/Regress/regress-211590.js
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 //----------------------------------------------------------------------------- | |
| 7 var BUGNUMBER = 211590; | |
| 8 var summary = 'Math.random should be random'; | |
| 9 var actual = ''; | |
| 10 var expect = 'between 47.5% and 52.5%'; | |
| 11 | |
| 12 printBugNumber(BUGNUMBER); | |
| 13 printStatus (summary); | |
| 14 | |
| 15 var r = Math.random; | |
| 16 var c = Math.pow( 2, 53 ); | |
| 17 | |
| 18 var n = 10000; | |
| 19 var odd1 = 0; | |
| 20 var odd2 = 0; | |
| 21 | |
| 22 for ( var i = 0; i < n; ++i ) | |
| 23 { | |
| 24 var v= r() * c; | |
| 25 if ( v & 1 ) | |
| 26 ++odd1; | |
| 27 if ( v - c + c & 1 ) | |
| 28 ++odd2; | |
| 29 } | |
| 30 | |
| 31 odd1 *= 100 / n; | |
| 32 odd2 *= 100 / n; | |
| 33 | |
| 34 if (odd1 >= 47.5 && odd1 <= 52.5) | |
| 35 { | |
| 36 actual = expect; | |
| 37 } | |
| 38 else | |
| 39 { | |
| 40 actual = ' is ' + odd1.toFixed(3); | |
| 41 } | |
| 42 | |
| 43 reportCompare(expect, actual, summary); | |
| 44 | |
| 45 if (odd2 >= 47.5 && odd2 <= 52.5) | |
| 46 { | |
| 47 actual = expect; | |
| 48 } | |
| 49 else | |
| 50 { | |
| 51 actual = ' is ' + odd2.toFixed(3); | |
| 52 } | |
| 53 | |
| 54 reportCompare(expect, actual, summary); |
