JavaScript bitwise NOT vs Math.floor()

JavaScript performance comparison

Revision 14 of this test case created by

Preparation code 


      
      <script>

        Benchmark.prototype.setup = function() {

          
  var numbers = [];
  
  //generate amount random numbers
  for (var i = 0; i < 100000; i++) {
    numbers[numbers.length] = Math.random() * 100000;
  }

        
  };


      
</script>

Test runner

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

Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
Math.floor() 
var test;
for (var i = 0; i < 100000; i++) {
  test = Math.floor(numbers[i]);
}
 pending…
bitwise NOT 
var test;
for (var i = 0; i < 100000; i++) {
  test = ~~ (numbers[i]);
}
 pending…
Mod Floor 
var test;
for (var i = 0; i < 100000; i++) {
  test = numbers[i] - numbers[i] % 1;
}
 pending…

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.

0 Comments