Run results for: Math.sqrt(x * x) vs Math.sqrt(x ** 2)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/148.0.0.0 Safari/537.36 Edg/148.0.0.0

Browser: Chrome 148

Operating system: Windows

Device Platform: Desktop

Date tested: 4 months ago

Benchmark engine: Benchmark.js

Math.sqrt(x * x)

49.6M/s

Math.sqrt(x ** 2)

49.6M/s

View exact numbers

Test name	Executions per second
✓ Math.sqrt(x * x)	49,646,084 Ops/sec
Math.sqrt(x ** 2)	49,592,280 Ops/sec

Script Preparation code:

const x = 123.456;
const y = 789.123;

Tests:

Math.sqrt(x * x)
Math.sqrt(x * x + y * y); const z = Math.random() Math.sqrt(z * z);
Math.sqrt(x ** 2)
Math.sqrt(x ** 2 + y ** 2); const z = Math.random() Math.sqrt(z ** 2);