luet/vendor/github.com/asaskevich/govalidator/numerics.go
David Cassany 18e9ce4557
Trim the Domain Name from cached image references
This commit removes the Domain Name, if any, from the cached image
reference before computing the image fingerprint. This way the same
image, if stored in some oter mirror, is still seen as the same one.

Fixes #158
2021-01-29 15:11:52 +01:00

101 lines
2.5 KiB
Go

package govalidator
import (
"math"
)
// Abs returns absolute value of number
func Abs(value float64) float64 {
return math.Abs(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
}
// InRangeInt returns true if value lies between left and right border
func InRangeInt(value, left, right interface{}) bool {
value64, _ := ToInt(value)
left64, _ := ToInt(left)
right64, _ := ToInt(right)
if left64 > right64 {
left64, right64 = right64, left64
}
return value64 >= left64 && value64 <= right64
}
// InRangeFloat32 returns true if value lies between left and right border
func InRangeFloat32(value, left, right float32) bool {
if left > right {
left, right = right, left
}
return value >= left && value <= right
}
// InRangeFloat64 returns true if value lies between left and right border
func InRangeFloat64(value, left, right float64) bool {
if left > right {
left, right = right, left
}
return value >= left && value <= right
}
// InRange returns true if value lies between left and right border, generic type to handle int, float32, float64 and string.
// All types must the same type.
// False if value doesn't lie in range or if it incompatible or not comparable
func InRange(value interface{}, left interface{}, right interface{}) bool {
switch value.(type) {
case int:
intValue, _ := ToInt(value)
intLeft, _ := ToInt(left)
intRight, _ := ToInt(right)
return InRangeInt(intValue, intLeft, intRight)
case float32, float64:
intValue, _ := ToFloat(value)
intLeft, _ := ToFloat(left)
intRight, _ := ToFloat(right)
return InRangeFloat64(intValue, intLeft, intRight)
case string:
return value.(string) >= left.(string) && value.(string) <= right.(string)
default:
return false
}
}
// IsWhole returns true if value is whole number
func IsWhole(value float64) bool {
return 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)
}