Run results for: fast absolute value (branched & branchless) vs abs vs ** -1

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.6 Safari/605.1.15

Browser: Safari 17

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

custom (branched)

9.0M/s

custom (branchless)

8.8M/s

native

8.6M/s

-1 ** a

8.5M/s

View exact numbers

Script Preparation code:

var abs = Math.abs;
var fastAV = a => a - ((a < 0) * a * 2);
var fastAV2 = a => a < 0 ? -a : a;
var fastAV3 = a => (-1) ** (a > 0) * a;

Tests: