ref: e0b01eb11d97d9d1e1f36cd9a62c87b9bd33c50c 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);