16 Nov 2024 If you need a small and fast 64 bit hash function that can be copy-pasted easily, then here's one that I cooked up in an hour or so: chibihash64.h. Some key features: Small: ~60 loc in C Fast: See benchmark table below Portable: Doesn't use hardware specific instructions (e.g SSE) Good Quality: Passes smhasher, so should be good quality (I think) Unencumbered: Released into the public domain Free of undefined behavior and gives same result regardless of host system's endianness. Non-...