MeasureThat.net

Run results for: Float32 vs Float64 vs Array

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36 Edg/133.0.0.0
Chrome 133
Windows
Desktop
one month ago
Test name Executions per second
set f32 3764.5 Ops/sec
set f64 1237.4 Ops/sec
iterate and set f32 169.9 Ops/sec
iterate and set f64 169.6 Ops/sec
iterate and set array 190.6 Ops/sec
Script Preparation code:
​x
 
var length = 1e6;
​
var f32_a = Float32Array.from({length}, Math.random);
var f32_b = Float32Array.from({length}, Math.random);
​
var f64_a = Float64Array.from({length}, Math.random);
var f64_b = Float64Array.from({length}, Math.random);
​
var arr_a = Array.from({length}, Math.random);
var arr_b = Array.from({length}, Math.random);
Tests:

  • set f32

     
    f32_a.set(f32_b);

  • set f64

     
    f64_a.set(f64_b);

  • iterate and set f32

     
    for (let i = 0; i < length; i++) {
      f32_a[i] = f32_b[i];
    }

  • iterate and set f64

     
    for (let i = 0; i < length; i++) {
      f64_a[i] = f64_b[i];
    }

  • iterate and set array

     
    for (let i = 0; i < length; i++) {
      arr_a[i] = arr_b[i];
    }