Info

Changes: Made each test use a local sum var (shouldn't affect results much but makes them more consistent testwise.

Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    var n, N, i, I, sparse = [],
        full = [],
        full2 = [];
    
    N = 16384;
    I = 8;
    
    for (i = 0; i < I; i++) {
      do {
        n = (N * Math.random()) | 0;
        if (n > (N - 1)) {
          n = N - 1;
        }
      } while (sparse[n]);
      sparse[n] = -100 + 200 * Math.random();
    }
    full.length = N;
    full2.length = N;
    for (i = 0; i < N; i++) {
      if (typeof sparse[i] === "number") {
        full[i] = sparse[i];
        full2[i] = sparse[i];
      } else {
        full[i] = 0;
        full2[i] = -100 + 200 * Math.random();
      }
    }
  };
</script>

Test runner

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Java applet disabled.

var len = sparse.length, sum = 0, x, i = 0;
for (i = 0; i < len; i++) {
  x = sparse[i];
  x && (sum += x);
}

var len = full.length, sum = 0, i = 0;
for (i = 0; i < len; i++) {
  sum += full[i];
}

var sum = 0;
full.forEach(function(v, i) {
  sum += v;
});

var len = full2.length, sum = 0, i = 0;
for (i = 0; i < len; i++) {
  sum += full2[i];
}

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Revisions

You can edit these tests or add even more tests to this page by appending /edit to the URL. Here’s a list of current revisions for this page:

• Revision 1: published by Mattias Ernelli on 22nd October 2011
• Revision 3: published on 6th November 2012
• Revision 6: published by Jasmine on 31st December 2012
• Revision 7: published on 3rd February 2013
• Revision 8: published by Andreas Öman 3 weeks ago

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