Benchmark: Array vs Float32Array vs Float64Array multiplication

Script Preparation code:

const len = 16384;
window.len = len;
window.arr = new Array(len);
window.f32 = new Float32Array(len);
window.f64 = new Float64Array(len);
for (let i = 0; i < len; i++) {
  window.arr[i] = Math.random() * 2048;
  window.f32 = Math.fround(window.arr[i]);
  window.f64 = window.arr[i];
}

Tests:

Plain array
let a = 0; for (let i = 1; i < window.len; i++) { a = window.arr[i] * window.arr[i - 1]; }
Float32 Array
let a = 0; for (let i = 1; i < window.len; i++) { a = window.f32[i] * window.f32[i - 1]; }
Float64 Array
let a = 0; for (let i = 1; i < window.len; i++) { a = window.f64[i] * window.f64[i - 1]; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Plain array
Float32 Array
Float64 Array

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one month ago)

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 121 on Android

View result in a separate tab

Test name	Executions per second
Plain array	137.9 Ops/sec
Float32 Array	107.1 Ops/sec
Float64 Array	104.3 Ops/sec

Array vs Float32Array vs Float64Array multiplication (version: 3)

Comparing performance of: Plain array vs Float32 Array vs Float64 Array

Created: one year ago by: Registered User

Jump to the latest result

Plain array

Float32 Array

Float64 Array

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A