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Run results for:
Round in javascript
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=521927" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/123.0.0.0 Safari/537.36 OPR/109.0.0.0
Browser:
Opera 109
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Left bitwise shift
16.4M/s
Or bitwise
16.4M/s
Double bitwise not
16.4M/s
Math.round
9.3M/s
View exact numbers
Test name
Executions per second
✓
Left bitwise shift
16,438,980 Ops/sec
Or bitwise
16,369,109 Ops/sec
Double bitwise not
16,355,140 Ops/sec
Math.round
9,288,790 Ops/sec
Script Preparation code:
var somenum = 7.3, rounded;
Tests:
Or bitwise
rounded = (0.5 + somenum) | 0;
Double bitwise not
rounded = ~~ (0.5 + somenum);
Left bitwise shift
rounded = (0.5 + somenum) << 0;
Math.round
rounded = Math.round(somenum);