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Run results for:
Truncation Methods
Testing the various methods for truncating a number to an integer
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Embed Benchmark Result
<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:
6 months ago
Benchmark engine:
Benchmark.js
Bitwise complement
24K/s
Bitwise shift
22K/s
Math.trunc()
13K/s
Math.round()
13K/s
View exact numbers
Test name
Executions per second
✓
Bitwise complement
23,610 Ops/sec
Bitwise shift
22,285 Ops/sec
Math.trunc()
13,496 Ops/sec
Math.round()
13,479 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));