Run results for: getMiddle: Math.floor vs num % 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/18.6 Safari/605.1.15

Browser: Safari 18

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 8 months ago

Test name	Executions per second
getMiddleFloor	58114.9 Ops/sec
getMiddle	51616.7 Ops/sec

HTML Preparation code:

<!--your preparation HTML code goes here-->

Script Preparation code:

const getMiddleFloor = (num) => Math.floor(num / 2);
const getMiddle = (num) => (num % 2 ? (num - 1) / 2 : num / 2);
const random = (min, max) => Math.floor(Math.random() * (max - min)) + min;
const arr = Array.from({ length: 10000 }, () => random(0, 10000));

Tests:

getMiddleFloor
const result = arr.map(i => getMiddleFloor(i));
getMiddle
const result2 = arr.map(i => getMiddle(i));

Run results for: getMiddle: Math.floor vs num % 2

Math.floor(num / 2) vs (num % 2 ? (num - 1) / 2 : num / 2)

getMiddleFloor

getMiddle