The Tor Browser / file revision

 /*

  * Copyright (C) 2007 Apple Inc.  All rights reserved.

  *

  * Redistribution and use in source and binary forms, with or without

  * modification, are permitted provided that the following conditions

  * are met:

  * 1. Redistributions of source code must retain the above copyright

  *    notice, this list of conditions and the following disclaimer.

  * 2. Redistributions in binary form must reproduce the above copyright

  *    notice, this list of conditions and the following disclaimer in the

  *    documentation and/or other materials provided with the distribution.

  *

  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY

  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR

  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,

  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,

  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR

  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY

  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 

  */

 var loops = 15

 var nx = 120

 var nz = 120

 function morph(a, f) {

     var PI2nx = Math.PI * 8/nx

     var sin = Math.sin

     var f30 = -(50 * sin(f*Math.PI*2))

     for (var i = 0; i < nz; ++i) {

         for (var j = 0; j < nx; ++j) {

             a[3*(i*nx+j)+1]    = sin((j-1) * PI2nx ) * -f30

         }

     }

 }

 var a = Array()

 for (var i=0; i < nx*nz*3; ++i) 

     a[i] = 0

 for (var i = 0; i < loops; ++i) {

     morph(a, i/loops)

 }

 testOutput = 0;

 for (var i = 0; i < nx; i++)

     testOutput += a[3*(i*nx+i)+1];

 a = null;

 /* not based on any mathematical error calculation.*/

 acceptableDelta = 4e-15

 assertEq((testOutput - 6.394884621840902e-14) < acceptableDelta, true);