f52207a45c
In preparation for computing changed paths Bloom filters, implement the Murmur3 hash algorithm as described in [1]. It hashes the given data using the given seed and produces a uniformly distributed hash value. [1] https://en.wikipedia.org/wiki/MurmurHash#Algorithm Helped-by: Derrick Stolee <dstolee@microsoft.com> Helped-by: Szeder Gábor <szeder.dev@gmail.com> Reviewed-by: Jakub Narębski <jnareb@gmail.com> Signed-off-by: Garima Singh <garima.singh@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
13 lines
384 B
C
13 lines
384 B
C
#ifndef BLOOM_H
|
|
#define BLOOM_H
|
|
|
|
/*
|
|
* Calculate the murmur3 32-bit hash value for the given data
|
|
* using the given seed.
|
|
* Produces a uniformly distributed hash value.
|
|
* Not considered to be cryptographically secure.
|
|
* Implemented as described in https://en.wikipedia.org/wiki/MurmurHash#Algorithm
|
|
*/
|
|
uint32_t murmur3_seeded(uint32_t seed, const char *data, size_t len);
|
|
|
|
#endif |