RingMurmurHash Functions Reference

” MurmurHash is a non-cryptographic hash function suitable for general hash-based lookup.

It was created by Austin Appleby in 2008 and is currently hosted on Github along with its test suite named ‘SMHasher’. It also exists in a number of variants,[5] all of which have been released into the public domain. The name comes from two basic operations, multiply (MU) and rotate (R), used in its inner loop. “

Murmurhash extension is an extension written to implement a full implementation for the MurmurHash library.

Developer: Hassan Ahmed

MurmurHash1 functions

uint32_t murmurhash1(string key, int seed, [bool return_type]);

uint32_t murmurhash1_aligned(string key, int seed, [bool return_type]);

MurmurHash2 functions

uint32_t murmurhash2(string key, int seed, [bool return_type]);

uint32_t murmurhash2a(string key, int seed, [bool return_type]);

uint64_t murmurhash64a(string key, int seed, [bool return_type]);

uint64_t murmurhash64b(string key, int seed, [bool return_type]);

uint32_t murmurhash_neutral2(string key, int seed, [bool return_type]);

uint32_t murmurhash_aligned2(string key, int seed, [bool return_type]);

MurmurHash3 functions

uint32_t murmurhash3_x86_32(string key, int seed, [bool return_type]);

list murmurhash3_x86_128(string key, int seed, [bool return_type]);

list murmurhash3_x64_128(string key, int seed, [bool return_type]);

The third optional parameter is to set the type of the returned value, this parameter accepts a bool value [ true, false ], true will return a Hex value, while false will return a integer value.

Example

load "murmurhashlib.ring"

key = "Ring Language"

see murmurhash3_x86_32(key, 0, 0) + nl // Output: 1894444853
see murmurhash3_x86_32(key, 0, 1) + nl // Output: 70eaef35