tilde vs floor

JavaScript performance comparison

Test case created by Göran Andersson

Info

Comparison between ~~ and Math.floor

Preparation code

<script>
  var x = 3.14;
</script>

Test runner

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

Java applet disabled.

Testing in unknown unknown
Test Ops/sec
tildes
var y = ~~x;
pending…
floor
var y = Math.floor(x);
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. Here’s a list of current revisions for this page:

1 comment

VB commented :

It's worth noting that the functions don't do the same thing.

Math.floor(5.5) == ~~5.5 5 == 5

Math.floor(-5.5) != ~~-5.5 -6 != -5

Add a comment