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Run results for:
Round in javascript
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:134.0) Gecko/20100101 Firefox/134.0
Browser:
Firefox 134
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Or bitwise
910.1M/s
Left bitwise shift
892.9M/s
Double bitwise not
885.9M/s
Math.round
691.4M/s
View exact numbers
Test name
Executions per second
✓
Or bitwise
910,136,704 Ops/sec
Left bitwise shift
892,858,176 Ops/sec
Double bitwise not
885,932,800 Ops/sec
Math.round
691,414,336 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);