Preparation code

 
<script>
  Benchmark.prototype.setup = function() {
    function abs(n){
    return n < 0 ? -n : n;
    }
    
    function bit_abs(n){
    var mask = n >> 31;
    return (n ^ mask) - mask;
    }
  };

  Benchmark.prototype.teardown = function() {
    var a = 2, b = -3, c = 0
  };
</script>

Test runner

Warning! For accurate results, please disable Firebug before running the tests. (Why?)

Java applet disabled.

Math.abs(a);
Math.abs(b);
Math.abs(c);

abs(a);
abs(b);
abs(c);

bit_abs(a);
bit_abs(b);
bit_abs(c);

Compare results of other browsers

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 on 28th October 2011
• Revision 3: published by Solenoid on 17th December 2011
• Revision 4: published on 20th February 2012
• Revision 5: published on 20th September 2012
• Revision 6: published on 24th October 2012
• Revision 7: published on 7th February 2013
• Revision 8: published on 8th April 2013
• Revision 9: published on 8th April 2013

0 comments