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Run results for:
Round in javascript
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=523708" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/124.0.0.0 Safari/537.36
Browser:
Chrome 124
Operating system:
Linux
Device Platform:
Desktop
Date tested:
2 years ago
Left bitwise shift
8.4M/s
Double bitwise not
8.3M/s
Or bitwise
8.2M/s
Math.round
4.6M/s
View exact numbers
Test name
Executions per second
✓
Left bitwise shift
8,378,620 Ops/sec
Double bitwise not
8,268,324 Ops/sec
Or bitwise
8,174,572 Ops/sec
Math.round
4,557,158 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);