package zxcvbn_math import "math" /** I am surprised that I have to define these. . . Maybe i just didn't look hard enough for a lib. */ //http://blog.plover.com/math/choose.html func NChoseK(n, k float64) float64 { if k > n { return 0 } else if k == 0 { return 1 } var r float64 = 1 for d := float64(1); d <= k; d++ { r *= n r /= d n-- } return r } func Round(val float64, roundOn float64, places int) (newVal float64) { var round float64 pow := math.Pow(10, float64(places)) digit := pow * val _, div := math.Modf(digit) if div >= roundOn { round = math.Ceil(digit) } else { round = math.Floor(digit) } newVal = round / pow return }