Run results for: Float32 vs Float64

Run details:

User agent: Mozilla/5.0 (Android 14; Mobile; rv:109.0) Gecko/118.0 Firefox/118.0

Browser: Firefox Mobile 118

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
create f32	59672.9 Ops/sec
create f64	57726.2 Ops/sec
set f32	4453.6 Ops/sec
set f64	1990.0 Ops/sec
iterate and set f32	840.4 Ops/sec
iterate and set f64	831.0 Ops/sec
add and multiply f32	795.5 Ops/sec
add and multiply f64	787.5 Ops/sec

Script Preparation code:

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);

Tests:

create f32
new Float32Array(length);
create f64
new Float64Array(length);
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]; }
add and multiply f32
for (let i = 0; i < length; i++) { f32_a[i] = f32_b[i] + f32_b[i] * 2; }
add and multiply f64
for (let i = 0; i < length; i++) { f64_a[i] = f64_b[i] + f64_b[i] * 2; }

Run results for: Float32 vs Float64

create f32

create f64

set f32

set f64

iterate and set f32

iterate and set f64

add and multiply f32

add and multiply f64