chromium/third_party/smhasher/src/MurmurHash3.cpp

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

// Note - The x86 and x64 versions do _not_ produce the same results, as the
// algorithms are optimized for their respective platforms. You can still
// compile and run any of them on any platform, but your performance with the
// non-native version will be less than optimal.

#include "MurmurHash3.h"

//-----------------------------------------------------------------------------
// Platform-specific functions and macros

// Microsoft Visual Studio

#if defined(_MSC_VER)

#define FORCE_INLINE …

#include <stdlib.h>

#define ROTL32 …
#define ROTL64 …

#define BIG_CONSTANT …

// Other compilers

#else	// defined(_MSC_VER)

#define FORCE_INLINE …

inline uint32_t rotl32 ( uint32_t x, int8_t r )
{ … }

inline uint64_t rotl64 ( uint64_t x, int8_t r )
{ … }

#define ROTL32(x,y) …
#define ROTL64(x,y) …

#define BIG_CONSTANT(x) …

#endif // !defined(_MSC_VER)

//-----------------------------------------------------------------------------
// Block read - if your platform needs to do endian-swapping or can only
// handle aligned reads, do the conversion here

FORCE_INLINE uint32_t getblock32 ( const uint32_t * p, int i )
{ … }

FORCE_INLINE uint64_t getblock64 ( const uint64_t * p, int i )
{ … }

//-----------------------------------------------------------------------------
// Finalization mix - force all bits of a hash block to avalanche

FORCE_INLINE uint32_t fmix32 ( uint32_t h )
{ … }

//----------

FORCE_INLINE uint64_t fmix64 ( uint64_t k )
{ … }

//-----------------------------------------------------------------------------

void MurmurHash3_x86_32 ( const void * key, int len,
                          uint32_t seed, void * out )
{ … } 

//-----------------------------------------------------------------------------

void MurmurHash3_x86_128 ( const void * key, const int len,
                           uint32_t seed, void * out )
{ … }

//-----------------------------------------------------------------------------

void MurmurHash3_x64_128 ( const void * key, const int len,
                           const uint32_t seed, void * out )
{ … }

//-----------------------------------------------------------------------------