ref: c48cb65963f0fab8576020a00a04578f1d23e2b9
dir: /hashing.h/
#pragma once value_t nextipow2(value_t i); uint32_t int32hash(uint32_t a); uint64_t int64hash(uint64_t key); uint32_t int64to32hash(uint64_t key); uint64_t memhash(const char* buf, size_t n); uint32_t memhash32(const char* buf, size_t n);