Benchmark: Math.pow vs ** vs * vs eToNumber

Script Preparation code:

var a = 100000000;

Tests:

pow
var tmp = Math.round((Math.random()*100000000)); var i = 8; var tmp = tmp/Math.pow(10, i);
**
var tmp = Math.round((Math.random()*100000000)); var i = 8; var tmp = tmp/(10 ** i);
*
var tmp = Math.round((Math.random()*100000000)); var i = 8; while(i-- > 0){ tmp = tmp/10; }
e to number
var tmp = Math.round((Math.random()*100000000)); var i = 8; var tmp = tmp/Number(10+'e'+i);

Rendered benchmark preparation results:

Previous results

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/99.0.4844.84 Safari/537.36

Browser/OS: Chrome 99 on Windows

72.9M/s

e to number

39.1M/s

pow

38.0M/s

19.4M/s

View exact numbers

Math.pow vs ** vs * vs eToNumber (version: 1)