testing/performance/talos/page_load_test/sunspider/string-fasta.html

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  27
  28 <title>SunSpider string-fasta</title>
  29 <link rel="stylesheet" href="sunspider.css"></link>
  30 </head>
  31
  32 <body>
  33 <h3>string-fasta</h3>
  34 <div id="console">
  35 </div>
  36 <script>
  37
  38
  39 // The Great Computer Language Shootout
  40 //  http://shootout.alioth.debian.org
  41 //
  42 //  Contributed by Ian Osgood
  43
  44 var last = 42, A = 3877, C = 29573, M = 139968;
  45
  46 function rand(max) {
  47   last = (last * A + C) % M;
  48   return max * last / M;
  49 }
  50
  51 var ALU =
  52   "GGCCGGGCGCGGTGGCTCACGCCTGTAATCCCAGCACTTTGG" +
  53   "GAGGCCGAGGCGGGCGGATCACCTGAGGTCAGGAGTTCGAGA" +
  54   "CCAGCCTGGCCAACATGGTGAAACCCCGTCTCTACTAAAAAT" +
  55   "ACAAAAATTAGCCGGGCGTGGTGGCGCGCGCCTGTAATCCCA" +
  56   "GCTACTCGGGAGGCTGAGGCAGGAGAATCGCTTGAACCCGGG" +
  57   "AGGCGGAGGTTGCAGTGAGCCGAGATCGCGCCACTGCACTCC" +
  58   "AGCCTGGGCGACAGAGCGAGACTCCGTCTCAAAAA";
  59
  60 var IUB = {
  61   a:0.27, c:0.12, g:0.12, t:0.27,
  62   B:0.02, D:0.02, H:0.02, K:0.02,
  63   M:0.02, N:0.02, R:0.02, S:0.02,
  64   V:0.02, W:0.02, Y:0.02
  65 }
  66
  67 var HomoSap = {
  68   a: 0.3029549426680,
  69   c: 0.1979883004921,
  70   g: 0.1975473066391,
  71   t: 0.3015094502008
  72 }
  73
  74 function makeCumulative(table) {
  75   var last = null;
  76   for (var c in table) {
  77     if (last) table[c] += table[last];
  78     last = c;
  79   }
  80 }
  81
  82 function fastaRepeat(n, seq) {
  83   var seqi = 0, lenOut = 60;
  84   while (n>0) {
  85     if (n<lenOut) lenOut = n;
  86     if (seqi + lenOut < seq.length) {
  87       ret = seq.substring(seqi, seqi+lenOut);
  88       seqi += lenOut;
  89     } else {
  90       var s = seq.substring(seqi);
  91       seqi = lenOut - s.length;
  92       ret = s + seq.substring(0, seqi);
  93     }
  94     n -= lenOut;
  95   }
  96 }
  97
  98 function fastaRandom(n, table) {
  99   var line = new Array(60);
 100   makeCumulative(table);
 101   while (n>0) {
 102     if (n<line.length) line = new Array(n);
 103     for (var i=0; i<line.length; i++) {
 104       var r = rand(1);
 105       for (var c in table) {
 106         if (r < table[c]) {
 107           line[i] = c;
 108           break;
 109         }
 110       }
 111     }
 112     ret = line.join('');
 113     n -= line.length;
 114   }
 115 }
 116
 117 var ret;
 118
 119 var count = 7;
 120 ret = fastaRepeat(2*count*100000, ALU);
 121 ret = fastaRandom(3*count*1000, IUB);
 122 ret = fastaRandom(5*count*1000, HomoSap);
 123
 124
 125
 126
 127 </script>
 128
 129
 130 </body>
 131 </html>