func Uint32Zero(x uint32) uint32 {
	h := prime32_5 + 4 + x*prime32_3
	h = rol17(h) * prime32_4
	h ^= h >> 15
	h *= prime32_2
	h ^= h >> 13
	h *= prime32_3
	h ^= h >> 16
	return h
}
func Uint32Zero(x uint32) uint32 {
	h := prime32_5 + 4 + x*prime32_3
	h = rol17(h) * prime32_4
	h ^= h >> 15
	h *= prime32_2
	h ^= h >> 13
	h *= prime32_3
	h ^= h >> 16
	return h
}
// Uint32Zero hashes x with seed 0.