Run results for: toPrecision

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36

Browser: Chrome 92

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Number(v.toPrecision(p))	1166542.0 Ops/sec
_p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p	692984.8 Ops/sec

Script Preparation code:

var v=982173129.981279
var p=12

Tests:

Number(v.toPrecision(p))
Number(v.toPrecision(p));
_p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p
var _p=Math.pow(10,p-Math.ceil(Math.log10(v)));Math.round(v*_p)/_p;