testing/performance/talos/page_load_test/jss/real-partial-sums-3.html

   1 <html><head>
   2 <!-- MOZ_INSERT_CONTENT_HOOK -->
   3 <script src = runner.js></script>
   4 <script>
   5 var onlyName = 'Partial Sums', onlyNum = 4096;
   6 function thisTest() {
   7
   8 // The Computer Language Shootout
   9 // http://shootout.alioth.debian.org/
  10 // contributed by Isaac Gouy
  11
  12 function partial(n){
  13         var a1 = a2 = a3 = a4 = a5 = a6 = a7 = a8 = a9 = 0.0;
  14         var twothirds = 2.0/3.0;
  15         var alt = -1.0;
  16         var k2 = k3 = sk = ck = 0.0;
  17
  18         for (var k = 1; k <= n; k++){
  19                 k2 = k*k;
  20                 k3 = k2*k;
  21                 sk = Math.sin(k);
  22                 ck = Math.cos(k);
  23                 alt = -alt;
  24
  25                 a1 += Math.pow(twothirds,k-1);
  26                 a2 += Math.pow(k,-0.5);
  27                 a3 += 1.0/(k*(k+1.0));
  28                 a4 += 1.0/(k3 * sk*sk);
  29                 a5 += 1.0/(k3 * ck*ck);
  30                 a6 += 1.0/k;
  31                 a7 += 1.0/k2;
  32                 a8 += alt/k;
  33                 a9 += alt/(2*k -1);
  34         }
  35 }
  36
  37 startTest("real-partial-sums");
  38
  39 for ( var i = 1024; i <= 8192; i *= 2 ) (function(i){
  40         test( "Partial Sums", i, function(){
  41                 partial(i);
  42         });
  43 })(i);
  44
  45 endTest();
  46 }
  47 </script>
  48 <body onload="thisTest()"></body></html>