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/* -*- 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 <bob@bclary.com>
*
* 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 BUGNUMBER = 211590;
var summary = 'Math.random should be random';
var actual = '';
var expect = 'between 47.5% and 52.5%';
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 >= 47.5 && odd1 <= 52.5)
{
actual = expect;
}
else
{
actual = ' is ' + odd1.toFixed(3);
}
reportCompare(expect, actual, summary);
if (odd2 >= 47.5 && odd2 <= 52.5)
{
actual = expect;
}
else
{
actual = ' is ' + odd2.toFixed(3);
}
reportCompare(expect, actual, summary);
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