/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is JavaScript Engine testing utilities. * * The Initial Developer of the Original Code is * Mozilla Foundation. * Portions created by the Initial Developer are Copyright (C) 2005 * the Initial Developer. All Rights Reserved. * * Contributor(s): zack-weg@gmx.de * Bob Clary * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ var gTestfile = 'regress-211590.js'; //----------------------------------------------------------------------------- var BUGNUMBER = 211590; var summary = 'Math.random should be random'; var actual = ''; var expect = 'between 48.5% and 51.5%'; printBugNumber(BUGNUMBER); printStatus (summary); var r = Math.random; var c = Math.pow( 2, 53 ); var n = 10000; var odd1 = 0; var odd2 = 0; for ( var i = 0; i < n; ++i ) { var v= r() * c; if ( v & 1 ) ++odd1; if ( v - c + c & 1 ) ++odd2; } odd1 *= 100 / n; odd2 *= 100 / n; if (odd1 >= 48.5 && odd1 <= 51.5) { actual = expect; } else { actual = ' is ' + odd1.toFixed(3); } reportCompare(expect, actual, summary); if (odd2 >= 48.5 && odd2 <= 51.5) { actual = expect; } else { actual = ' is ' + odd2.toFixed(3); } reportCompare(expect, actual, summary);