bear/lib/math.vr

// math.vr — math helpers (part of the VuurRaaf stdlib).
//
//   import math
//   println(math.clamp(150, 0, 100))
//   println(math.sign(-3))

fn abs(x) {
	return abs(x)
}

fn min(a, b) {
	return min(a, b)
}

fn max(a, b) {
	return max(a, b)
}

fn floor(x) {
	return floor(x)
}

fn ceil(x) {
	return ceil(x)
}

fn round(x) {
	return round(x)
}

fn sqrt(x) {
	return sqrt(x)
}

fn pow(a, b) {
	return pow(a, b)
}

fn clamp(x, lo, hi) {
	if x < lo {
		return lo
	}
	if x > hi {
		return hi
	}
	return x
}

fn sign(x) {
	if x < 0 {
		return -1
	}
	if x > 0 {
		return 1
	}
	return 0
}

fn pi() {
	return 3.14159
}