jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

floor (v3)

Revision 3 of this benchmark created on October 5, 2011

Preparation HTML

<script>
  var mynum=1234567890.5678987654567;
</script>

Test runner

Ready to run.

Testing in
Test		Ops/sec
bitwise	`mynum \| 0;`	ready
floor	`Math.floor(mynum);`	ready
double bitwise not	`~~mynum`	ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published on October 5, 2011
Revision 2: published on October 5, 2011
Revision 3: published on October 5, 2011
Revision 4: published on October 5, 2011
Revision 5: published on October 5, 2011