Run results for: array vs Float64Array vs Float32Array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.3 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Float32Array reverse

552K/s

Float64Array reverse

548K/s

Float32Array i/o

296K/s

Float64Array i/o

295K/s

array reverse

194K/s

array i/o

149K/s

View exact numbers

Test name	Executions per second
✓ Float32Array reverse	552,443 Ops/sec
Float64Array reverse	547,837 Ops/sec
Float32Array i/o	295,892 Ops/sec
Float64Array i/o	294,572 Ops/sec
array reverse	193,505 Ops/sec
array i/o	148,725 Ops/sec

Script Preparation code:

var a = [...Array(10000)].map(_ => Math.random());
var ta = (new Float64Array(10000)).map(_ => Math.random());
var tb = (new Float32Array(10000)).map(_ => Math.random());

Tests:

array reverse
a.reverse();
Float64Array reverse
ta.reverse();
array i/o
for (let i = 0; i < 10000; ++i) a[i] = a[i] + 1;
Float64Array i/o
for (let i = 0; i < 10000; ++i) ta[i] = ta[i] + 1;
Float32Array reverse
tb.reverse();
Float32Array i/o
for (let i = 0; i < 10000; ++i) tb[i] = tb[i] + 1;