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/132.0.0.0 Safari/537.36 OPR/117.0.0.0 (Edition std-1)

Browser: Opera 117

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

& 0xFFFFFFFFFFFF

15.7M/s

15.6M/s

| 0

15.6M/s

<< 0

15.6M/s

^ 0x000000000000

15.6M/s

floor

15.5M/s

parseInt()

15.5M/s

>> 0

15.5M/s

Math.trunc()

15.5M/s

x - (x % 1)

13.4M/s

View exact numbers

Test name	Executions per second
✓ & 0xFFFFFFFFFFFF	15,704,023 Ops/sec
~~	15,639,064 Ops/sec
\| 0	15,633,187 Ops/sec
<< 0	15,578,008 Ops/sec
^ 0x000000000000	15,565,799 Ops/sec
floor	15,543,850 Ops/sec
parseInt()	15,511,181 Ops/sec
>> 0	15,485,411 Ops/sec
Math.trunc()	15,451,303 Ops/sec
x - (x % 1)	13,428,259 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)