Run results for: Round in javascript - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/110.0

Browser: Firefox 110

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Or bitwise	225215904.0 Ops/sec
Double bitwise not	208151168.0 Ops/sec
Left bitwise shift	215566176.0 Ops/sec
Math.round	212171680.0 Ops/sec

Script Preparation code:

var somenum = 7.3, rounded;

Tests:

Or bitwise
rounded = (0.5 + somenum) | 0;
Double bitwise not
rounded = ~~ (0.5 + somenum);
Left bitwise shift
rounded = (0.5 + somenum) << 0;
Math.round
rounded = Math.round(somenum);