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Run results for:
Math.log2 vs division for power of two vs multiple of x vs max32
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<iframe src="https://measurethat.net/Embed?id=613063" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36
Browser:
Chrome 137
Operating system:
Windows
Device Platform:
Desktop
Date tested:
one year ago
Multiple of x
134.6M/s
Math.log2
134.3M/s
Division
129.1M/s
Max32
123.4M/s
View exact numbers
Test name
Executions per second
✓
Multiple of x
134,628,320 Ops/sec
Math.log2
134,324,608 Ops/sec
Division
129,131,544 Ops/sec
Max32
123,377,312 Ops/sec
Tests:
Division
return 4294967295 / 65536 >>> 0;
Math.log2
return 4294967295 >>> (32 - Math.log2(65536));
Multiple of x
const kelipatan = 65536 * (2_097_152 / 65536 >>> 0); const urutanAcak = 4294967295 >>> 11; const reject = urutanAcak >= kelipatan; return urutanAcak % 65536;
Max32
return 4294967295 * 65536 / 4294967296 >>> 0;