You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
97 lines
2.7 KiB
97 lines
2.7 KiB
package govalidator
|
|
|
|
import (
|
|
"math"
|
|
"reflect"
|
|
)
|
|
|
|
// 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
|
|
}
|
|
|
|
// InRange 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
|
|
}
|
|
|
|
// InRange 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
|
|
}
|
|
|
|
// InRange 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 or float64, all types must the same type
|
|
func InRange(value interface{}, left interface{}, right interface{}) bool {
|
|
|
|
reflectValue := reflect.TypeOf(value).Kind()
|
|
reflectLeft := reflect.TypeOf(left).Kind()
|
|
reflectRight := reflect.TypeOf(right).Kind()
|
|
|
|
if reflectValue == reflect.Int && reflectLeft == reflect.Int && reflectRight == reflect.Int {
|
|
return InRangeInt(value.(int), left.(int), right.(int))
|
|
} else if reflectValue == reflect.Float32 && reflectLeft == reflect.Float32 && reflectRight == reflect.Float32 {
|
|
return InRangeFloat32(value.(float32), left.(float32), right.(float32))
|
|
} else if reflectValue == reflect.Float64 && reflectLeft == reflect.Float64 && reflectRight == reflect.Float64 {
|
|
return InRangeFloat64(value.(float64), left.(float64), right.(float64))
|
|
} else {
|
|
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)
|
|
}
|
|
|