PMurHash.c File Reference

#include "PMurHash.h"
#include "endianness.h"

Go to the source code of this file.

Macros
#define	FORCE_INLINE   static inline __attribute__((always_inline))
#define	ROTL32(x, r)
#define	READ_UINT32(ptr)
#define	doblock(h1, k1)
#define	dobytes(cnt, h1, c, n, ptr, len)

Functions
void	PMurHash32_Process (uint32_t *ph1, uint32_t *pcarry, const void *key, int len)
uint32_t	PMurHash32_Result (uint32_t h, uint32_t carry, uint32_t total_length)

Macro Definition Documentation

doblock

#define doblock	(		h1,
			k1 )

Value:

do {\
  k1 *= kC1;\
  k1 = ROTL32(k1,15);\
  k1 *= kC2;\
\
  h1 ^= k1;\
  h1 = ROTL32(h1,13);\
  h1 = h1*5+0xe6546b64;\
} while(0)

Definition at line 93 of file PMurHash.c.

dobytes

#define dobytes	(		cnt,
			h1,
			c,
			n,
			ptr,
			len )

Value:

do {\
  unsigned __cnt = cnt;\
  while(__cnt--) {\
    c = c>>8 | (uint32_t)*ptr++<<24;\
    n++; len--;\
    if(n==4) {\
        doblock(h1, c);\
        n = 0;\
    }\
  }\
} while(0)

Definition at line 106 of file PMurHash.c.

FORCE_INLINE

#define FORCE_INLINE   static inline __attribute__((always_inline))

Definition at line 76 of file PMurHash.c.

READ_UINT32

#define READ_UINT32

(

ptr

)

Value:

getblock32((uint32_t *)ptr, 0)

Definition at line 83 of file PMurHash.c.

ROTL32

#define ROTL32	(		x,
			r )

Value:

(((uint32_t)x << r) | ((uint32_t)x >> (32 - r)))

Definition at line 78 of file PMurHash.c.

Function Documentation

PMurHash32_Process()

void PMurHash32_Process	(	uint32_t *	ph1,
		uint32_t *	pcarry,
		const void *	key,
		int	len )

Definition at line 123 of file PMurHash.c.

PMurHash32_Result()

uint32_t PMurHash32_Result	(	uint32_t	h,
		uint32_t	carry,
		uint32_t	total_length )

Definition at line 208 of file PMurHash.c.