Benchmark: Truncation Methods 2

Script Preparation code:

//"use strict";
const arr = Array.from({length: 100}, (function(){return Math.random()*1000}));

Tests:

Math.trunc(num)
"use strict"; let x = 0; for (let i=0, len=arr.length; i<len; i++) { x = Math.trunc(arr[i]); }
Math.floor(num)
"use strict"; let x = 0; for (let i=0, len=arr.length; i<len; i++) { x = Math.floor(arr[i]); }
~~num
"use strict"; let x = 0; for (let i=0, len=arr.length; i<len; i++) { x = ~~(arr[i]); }
num | 0
"use strict"; let x = 0; for (let i=0, len=arr.length; i<len; i++) { x = (arr[i]) | 0; }
num << 0
"use strict"; let x = 0; for (let i=0, len=arr.length; i<len; i++) { x = (arr[i]) << 0; }
num >> 0
"use strict"; let x = 0; for (let i=0, len=arr.length; i<len; i++) { x = (arr[i]) >> 0; }
num >>> 0
"use strict"; let x = 0; for (let i=0, len=arr.length; i<len; i++) { x = (arr[i]) >>> 0; }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Math.trunc(num)
Math.floor(num)
~~num
num \| 0
num << 0
num >> 0
num >>> 0

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.5 Safari/605.1.15

Browser/OS: Safari 26 on Mac OS X 10.15.7

View result in a separate tab

num >> 0

30.6M/s

~~num

30.5M/s

num >>> 0

28.4M/s

num | 0

20.0M/s

num << 0

19.6M/s

Math.trunc(num)

17.1M/s

Math.floor(num)

15.0M/s

View exact numbers

Test name	Executions per second
✓ num >> 0	30,566,530 Ops/sec
~~num	30,541,668 Ops/sec
num >>> 0	28,353,926 Ops/sec
num \| 0	19,983,364 Ops/sec
num << 0	19,609,268 Ops/sec
Math.trunc(num)	17,056,756 Ops/sec
Math.floor(num)	14,998,450 Ops/sec

Truncation Methods 2 (version: 1)

Testing the various methods for truncating a number to an integer

Comparing performance of: `Math.trunc(num) vs Math.floor(num) vs ~~num vs num | 0 vs num << 0 vs num >> 0 vs num >>> 0`

Created: 2 months ago by: Guest

Go to the latest result

Math.trunc(num)

Math.floor(num)

~~num

num | 0

num << 0

num >> 0

num >>> 0

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Truncation Methods 2 (version: 1)

Testing the various methods for truncating a number to an integer

Comparing performance of: Math.trunc(num) vs Math.floor(num) vs ~~num vs num | 0 vs num << 0 vs num >> 0 vs num >>> 0

Created: 2 months ago by: Guest

Go to the latest result

Math.trunc(num)

Math.floor(num)

~~num

num | 0

num << 0

num >> 0

num >>> 0

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Related benchmarks

Comparing performance of: `Math.trunc(num) vs Math.floor(num) vs ~~num vs num | 0 vs num << 0 vs num >> 0 vs num >>> 0`