ref: ee7d78d5b4c39eabf0f2bdefae4a173a421ec8a3
dir: /hashing.h/
#pragma once lltuint_t nextipow2(lltuint_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);