controlflow-recursive.html 2.1 KB

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  1. <!DOCTYPE html>
  2. <head>
  3. <!--
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  25. <title>SunSpider controlflow-recursive</title>
  26. </head>
  27. <body>
  28. <h3>controlflow-recursive</h3>
  29. <div id="console">
  30. </div>
  31. <script>
  32. var _sunSpiderStartDate = new Date();
  33. // The Computer Language Shootout
  34. // http://shootout.alioth.debian.org/
  35. // contributed by Isaac Gouy
  36. function ack(m,n){
  37. if (m==0) { return n+1; }
  38. if (n==0) { return ack(m-1,1); }
  39. return ack(m-1, ack(m,n-1) );
  40. }
  41. function fib(n) {
  42. if (n < 2){ return 1; }
  43. return fib(n-2) + fib(n-1);
  44. }
  45. function tak(x,y,z) {
  46. if (y >= x) return z;
  47. return tak(tak(x-1,y,z), tak(y-1,z,x), tak(z-1,x,y));
  48. }
  49. for ( var i = 3; i <= 5; i++ ) {
  50. ack(3,i);
  51. fib(17.0+i);
  52. tak(3*i+3,2*i+2,i+1);
  53. }
  54. var _sunSpiderInterval = new Date() - _sunSpiderStartDate;
  55. document.getElementById("console").innerHTML = _sunSpiderInterval;
  56. </script>
  57. </body>
  58. </html>