Run results for: math.round vs alternatives (floating point fix)

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.183 Safari/537.36

Browser: Chrome 86

Operating system: Linux

Device Platform: Desktop

Date tested: 4 years ago

Script Preparation code:

var factor = 10 ** 8
var fp = (1.1*1.1) // 1.2100000000000002

Tests:

math.round
Math.round(fp * 10e8) / 10e8
math.round2
Math.round(fp * factor) / factor;
decimal round
const fpFix = Number.EPSILON * (fp < 0 ? -1 : 1); Math.round((fp + fpFix) * factor) / factor;
round (php)
let d = 8; let n = +(d ? fp * factor : fp).toFixed(8); let r = Math.round(n) d ? r / factor : r;