Run results for: floor() vs trunc() vs bitwise hacks (~~, >> 0, etc)

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.124 YaBrowser/22.9.5.710 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 22

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
floor	4326418.5 Ops/sec
~~	8382395.5 Ops/sec
>> 0	8341403.0 Ops/sec
\| 0	8312364.0 Ops/sec
<< 0	8316145.5 Ops/sec
& 0xFFFFFFFFFFFF	8267561.5 Ops/sec
^ 0x000000000000	8251841.5 Ops/sec
Math.trunc()	4246549.0 Ops/sec
x - (x % 1)	5395307.0 Ops/sec
parseInt()	4327246.0 Ops/sec

Script Preparation code:

var x = Math.random() * 100000000;
var y;

Tests:

floor
y = Math.floor(x);
~~
y = ~~x;
>> 0
y = x >> 0;
| 0
y = x | 0;
<< 0
y = x << 0;
& 0xFFFFFFFFFFFF
y = x & 0xFFFFFFFFFFFF;
^ 0x000000000000
y = x ^ 0x000000000000;
Math.trunc()
y = Math.trunc(x);
x - (x % 1)
y = x - (x % 1);
parseInt()
y = parseInt(x)

Run results for: floor() vs trunc() vs bitwise hacks (~~, >> 0, etc)

floor

~~

>> 0

| 0

<< 0

& 0xFFFFFFFFFFFF

^ 0x000000000000

Math.trunc()

x - (x % 1)

parseInt()