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/133.0.0.0 Safari/537.36 OPR/118.0.0.0 (Edition Yx 05)

Browser: Opera 118

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

| 0

11.6M/s

^ 0x000000000000

11.5M/s

<< 0

11.3M/s

floor

11.3M/s

& 0xFFFFFFFFFFFF

11.1M/s

>> 0

11.1M/s

parseInt()

11.0M/s

Math.trunc()

10.4M/s

x - (x % 1)

10.0M/s

View exact numbers

Test name	Executions per second
✓ \| 0	11,580,649 Ops/sec
^ 0x000000000000	11,469,502 Ops/sec
<< 0	11,346,989 Ops/sec
floor	11,319,588 Ops/sec
~~	11,279,417 Ops/sec
& 0xFFFFFFFFFFFF	11,133,190 Ops/sec
>> 0	11,128,002 Ops/sec
parseInt()	11,048,963 Ops/sec
Math.trunc()	10,395,132 Ops/sec
x - (x % 1)	9,969,901 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)