geom/ints/math.go

package ints

// Abs returns the absolute value of i.
func Abs(i int) int {
	if 0 > i {
		return -i
	}
	return i
}

// Min returns the minimum of a and b.
func Min(a, b int) int {
	if a < b {
		return a
	}
	return b
}

// Min64 returns the minimum of a and b.
func Min64(a, b int64) int64 {
	if a < b {
		return a
	}
	return b
}

// Max returns the maximum of a and b.
func Max(a, b int) int {
	if a > b {
		return a
	}
	return b
}

// Max64 returns the maximum of a and b.
func Max64(a, b int64) int64 {
	if a > b {
		return a
	}
	return b
}

// Norm returns the normalized value of i (-1, 0 or 1).
func Norm(i int) int {
	if i < 0 {
		return -1
	}
	if i > 0 {
		return 1
	}
	return 0
}

// Norm64 returns the normalized value of i (-1, 0 or 1).
func Norm64(i int64) int64 {
	if i < 0 {
		return -1
	}
	if i > 0 {
		return 1
	}
	return 0
}

// SubAbs subtracts a from b and returns the absolute value of the result.
func SubAbs(a, b int) int {
	if a > b {
		return a - b
	}
	return b - a
}