hash_mm3.cc File Reference

#include "BLI_compiler_attrs.h"
#include "BLI_compiler_compat.h"
#include "BLI_hash_mm3.hh"

Go to the source code of this file.

Macros
#define	ROTL32(x, y)   rotl32(x, y)
#define	BIG_CONSTANT(x)   (x##LLU)

Functions
static uint32_t	rotl32 (uint32_t x, int8_t r)
BLI_INLINE uint32_t	getblock32 (const uint32_t *p, int i)
BLI_INLINE uint64_t	getblock64 (const uint64_t *p, int i)
BLI_INLINE uint32_t	fmix32 (uint32_t h)
BLI_INLINE uint64_t	fmix64 (uint64_t k)
uint32_t	BLI_hash_mm3 (const uchar *data, size_t len, uint32_t seed)

Detailed Description

Functions to compute Murmur3 hash key.

This Code is based on alShaders/Cryptomatte/MurmurHash3.h:

MurmurHash3 was written by Austin Appleby, and is placed in the public domain. The author hereby disclaims copyright to this source code.

Definition in file hash_mm3.cc.

Macro Definition Documentation

BIG_CONSTANT

#define BIG_CONSTANT

(

x

)

(x##LLU)

Definition at line 32 of file hash_mm3.cc.

Referenced by fmix64().

ROTL32

#define ROTL32	(		x,
			y )   rotl32(x, y)

Definition at line 31 of file hash_mm3.cc.

Referenced by BLI_hash_mm3().

Function Documentation

BLI_hash_mm3()

uint32_t BLI_hash_mm3	(	const uchar *	data,
		size_t	len,
		uint32_t	seed )

Definition at line 73 of file hash_mm3.cc.

References ATTR_FALLTHROUGH, fmix32(), getblock32(), len, ROTL32, and seed.

Referenced by cryptomatte_determine_identifier(), and blender::bke::cryptomatte::CryptomatteHash::CryptomatteHash().

fmix32()

BLI_INLINE uint32_t fmix32

(

uint32_t

h

)

Definition at line 51 of file hash_mm3.cc.

Referenced by BLI_hash_mm3().

fmix64()

BLI_INLINE uint64_t fmix64

(

uint64_t

k

)

Definition at line 62 of file hash_mm3.cc.

References BIG_CONSTANT.

getblock32()

BLI_INLINE uint32_t getblock32	(	const uint32_t *	p,
		int	i )

Definition at line 39 of file hash_mm3.cc.

Referenced by BLI_hash_mm3().

getblock64()

BLI_INLINE uint64_t getblock64	(	const uint64_t *	p,
		int	i )

Definition at line 44 of file hash_mm3.cc.

rotl32()

static uint32_t rotl32 ( uint32_t x, int8_t r )

inlinestatic

Definition at line 27 of file hash_mm3.cc.