MeasureThat.net

Run results for: bitwise operator vs. boolean logic when using TypedArrays

Bitwise operators are slow in javascript because there is implicit type conversion between floats and ints. If we use TypedArrays though, javascript engines shouldn't have to convert. But do they? This test is here to find out. We'll also check to see whether conversion is performed between another int-like datatypes, Uint32

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.116 Safari/537.36
Chrome 80
Windows
Desktop
4 years ago
Test name Executions per second
bitwise operator on Int32Array 328.5 Ops/sec
boolean operator on Int32Array 325.2 Ops/sec
boolean operator with comparitors on Int32Array 328.5 Ops/sec
bitwise operator on Float32Array 327.6 Ops/sec
bitwise operator on Uint32Array 336.0 Ops/sec
boolean operator on Uint32Array 315.1 Ops/sec
boolean operator on Uint32Array with comparators 314.8 Ops/sec
Script Preparation code:
Tests:

  • bitwise operator on Int32Array

  • boolean operator on Int32Array

  • boolean operator with comparitors on Int32Array

  • bitwise operator on Float32Array

  • bitwise operator on Uint32Array

  • boolean operator on Uint32Array

  • boolean operator on Uint32Array with comparators

;