Run results for: floor vs bitwise-not

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4535.3 Safari/537.36

Browser: Chrome 93

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
floor	1538021.8 Ops/sec
bitwise-not	1958918.4 Ops/sec

Script Preparation code:

window.array = [...Array(1000)].map((x, idx) => idx)

AخA
 
window.array = [...Array(1000)].map((x, idx) => idx)

Tests:

const rnd = window.array[Math.floor(Math.random() * window.array.length)]

 
const rnd = window.array[Math.floor(Math.random() * window.array.length)]

bitwise-not
const rnd = window.array[~~(Math.random() * window.array.length)]
const rnd = window.array[~~(Math.random() * window.array.length)]