mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-27 22:49:40 -08:00
58 lines
1.2 KiB
Go
58 lines
1.2 KiB
Go
package govalidator
|
|
|
|
import "math"
|
|
|
|
// Abs returns absolute value of number
|
|
func Abs(value float64) float64 {
|
|
return value * Sign(value)
|
|
}
|
|
|
|
// Sign returns signum of number: 1 in case of value > 0, -1 in case of value < 0, 0 otherwise
|
|
func Sign(value float64) float64 {
|
|
if value > 0 {
|
|
return 1
|
|
} else if value < 0 {
|
|
return -1
|
|
} else {
|
|
return 0
|
|
}
|
|
}
|
|
|
|
// IsNegative returns true if value < 0
|
|
func IsNegative(value float64) bool {
|
|
return value < 0
|
|
}
|
|
|
|
// IsPositive returns true if value > 0
|
|
func IsPositive(value float64) bool {
|
|
return value > 0
|
|
}
|
|
|
|
// IsNonNegative returns true if value >= 0
|
|
func IsNonNegative(value float64) bool {
|
|
return value >= 0
|
|
}
|
|
|
|
// IsNonPositive returns true if value <= 0
|
|
func IsNonPositive(value float64) bool {
|
|
return value <= 0
|
|
}
|
|
|
|
// InRange returns true if value lies between left and right border
|
|
func InRange(value, left, right float64) bool {
|
|
if left > right {
|
|
left, right = right, left
|
|
}
|
|
return value >= left && value <= right
|
|
}
|
|
|
|
// IsWhole returns true if value is whole number
|
|
func IsWhole(value float64) bool {
|
|
return Abs(math.Remainder(value, 1)) == 0
|
|
}
|
|
|
|
// IsNatural returns true if value is natural number (positive and whole)
|
|
func IsNatural(value float64) bool {
|
|
return IsWhole(value) && IsPositive(value)
|
|
}
|