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Run results for:
Comparing performance of Math.floor(x); vs Math.round(x); vs (0.5 + x) << 0;
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<iframe src="https://measurethat.net/Embed?id=503860" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:122.0) Gecko/20100101 Firefox/122.0
Browser:
Firefox 122
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Test name
Executions per second
Math.floor(x);
349444768.0 Ops/sec
Math.round(x)
352376544.0 Ops/sec
(0.5 + x) << 0;
347423904.0 Ops/sec
Script Preparation code:
var x = Math.random() * 100000000; var y;
Tests:
Math.floor(x);
y=Math.floor(x);
Math.round(x)
y=Math.round(x)
(0.5 + x) << 0;
y=(0.5 + x) << 0;