ref: 96e08ec043ae59e7eec6707c9d410caa7fd114a5 dir: /src/hashing.h/
#pragma once sl_v inthash(sl_v a) sl_constfn; u32int int64to32hash(u64int key) sl_constfn; u64int memhash(const char* buf, usize n) sl_nonnull(1);