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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=618053" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36
Browser:
Chrome 140
Operating system:
Mac OS X 10.15.7
Device Platform:
Desktop
Date tested:
one year ago
Benchmark engine:
Benchmark.js
Math.trunc()
25K/s
Bitwise complement
25K/s
Bitwise shift
23K/s
Math.round()
15K/s
View exact numbers
Test name
Executions per second
✓
Math.trunc()
25,109 Ops/sec
Bitwise complement
24,798 Ops/sec
Bitwise shift
23,142 Ops/sec
Math.round()
15,070 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));