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Run results for:
Truncation Methods
Testing the various methods for truncating a number to an integer
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<iframe src="https://measurethat.net/Embed?id=625798" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:140.0) Gecko/20100101 Firefox/140.0
Browser:
Firefox 140
Operating system:
Mac OS X 10.15
Device Platform:
Desktop
Date tested:
2 months ago
Test name
Executions per second
Bitwise complement
23610.0 Ops/sec
Bitwise shift
22285.3 Ops/sec
Math.trunc()
13495.5 Ops/sec
Math.round()
13479.3 Ops/sec
Script Preparation code:
var a = Array.from({length: 10000}, _ => Math.random() * 1000);
Tests:
Bitwise complement
a.map(i => ~~i);
Bitwise shift
a.map(i => i >>> 0);
Math.trunc()
a.map(i => Math.trunc(i));
Math.round()
a.map(i => Math.round(i));