hash #

Description:

hash provides a way to hash binary data, i.e. produce a shorter value, that is highly content dependent, so even slightly different content will produce widely different hashes.

Hash functions are useful for implementing maps, caches etc.

fn sum64(key []u8, seed u64) u64

sum64 returns a hash given a byte array key and a seed.

fn sum64_string(key string, seed u64) u64

sum64_string returns a hash given a V string key and a seed.

fn wyhash64_c(a u64, b u64) u64

wyhash64_c returns a hash given two u64 values a and b.

fn wyhash_c(key &u8, len u64, seed u64) u64

wyhash_c returns a hash given a byte string key, its len, and a seed.

fn wymum(a u64, b u64) u64

wymum returns a hash by performing multiply and mix on a and b.