Run results for: roudning

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/115.0.0.0 Safari/537.36

Browser: Chrome 115

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
weird round	174.4 Ops/sec
Math.round	145.7 Ops/sec

Script Preparation code:

var nums = Array.from({ length: 10000 }, () => (Math.random() * 2 - 1) * 10000)
var sum = 0

Tests:

weird round
for (let i = 0; i < nums.length; i++) sum += (nums[i] + (nums[i] > 0 ? 0.5 : -0.5)) << 0
Math.round
for (let i = 0; i < nums.length; i++) sum += Math.round(nums[i])