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feat(mathutil): add DIv, FloorToFloat, FloorToString, CeilToFloat, CeilToString (#199)

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This commit is contained in:
Cannian
2024-03-04 17:40:31 +08:00
committed by GitHub
parent 92fae4273b
commit f7b54986aa
5 changed files with 514 additions and 8 deletions
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45
mathutil/mathutil.go
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@@ -66,7 +66,7 @@ func Percent(val, total float64, n int) float64 {
return result
}
// RoundToString round up to n decimal places.
// RoundToString round off to n decimal places.
// Play: https://go.dev/play/p/kZwpBRAcllO
func RoundToString[T constraints.Float | constraints.Integer](x T, n int) string {
tmp := math.Pow(10.0, float64(n))
@@ -76,7 +76,7 @@ func RoundToString[T constraints.Float | constraints.Integer](x T, n int) string
return result
}
// RoundToFloat round up to n decimal places.
// RoundToFloat round off to n decimal places.
// Play: https://go.dev/play/p/ghyb528JRJL
func RoundToFloat[T constraints.Float | constraints.Integer](x T, n int) float64 {
tmp := math.Pow(10.0, float64(n))
@@ -100,6 +100,40 @@ func TruncRound[T constraints.Float | constraints.Integer](x T, n int) T {
return T(result)
}
// FloorToFloat round down to n decimal places.
func FloorToFloat[T constraints.Float | constraints.Integer](x T, n int) float64 {
tmp := math.Pow(10.0, float64(n))
x *= T(tmp)
r := math.Floor(float64(x))
return r / tmp
}
// FloorToString round down to n decimal places.
func FloorToString[T constraints.Float | constraints.Integer](x T, n int) string {
tmp := math.Pow(10.0, float64(n))
x *= T(tmp)
r := math.Floor(float64(x))
result := strconv.FormatFloat(r/tmp, 'f', n, 64)
return result
}
// CeilToFloat round up to n decimal places.
func CeilToFloat[T constraints.Float | constraints.Integer](x T, n int) float64 {
tmp := math.Pow(10.0, float64(n))
x *= T(tmp)
r := math.Ceil(float64(x))
return r / tmp
}
// CeilToString round up to n decimal places.
func CeilToString[T constraints.Float | constraints.Integer](x T, n int) string {
tmp := math.Pow(10.0, float64(n))
x *= T(tmp)
r := math.Ceil(float64(x))
result := strconv.FormatFloat(r/tmp, 'f', n, 64)
return result
}
// Max return max value of numbers.
// Play: https://go.dev/play/p/cN8DHI0rTkH
func Max[T constraints.Integer | constraints.Float](numbers ...T) T {
@@ -253,7 +287,7 @@ func PointDistance(x1, y1, x2, y2 float64) float64 {
return math.Sqrt(c)
}
// IsPrimes checks if number is prime number.
// IsPrime checks if number is prime number.
// Play: https://go.dev/play/p/Rdd8UTHZJ7u
func IsPrime(n int) bool {
if n < 2 {
@@ -351,3 +385,8 @@ func Abs[T constraints.Integer | constraints.Float](x T) T {
return x
}
// Div returns the result of x divided by y.
func Div[T constraints.Float | constraints.Integer](x T, y T) float64 {
return float64(x) / float64(y)
}