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/* -*- 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 = 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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