H5checksum.c File Reference

#include "H5private.h"

Macros
#define	H5_CRC_QUOTIENT   0x04C11DB7
#define	H5_lookup3_rot(x, k)   (((x)<<(k)) ^ ((x)>>(32-(k))))
#define	H5_lookup3_mix(a, b, c)
#define	H5_lookup3_final(a, b, c)

Functions
uint32_t	H5_checksum_fletcher32 (const void *_data, size_t _len)
uint32_t	H5_checksum_crc (const void *_data, size_t len)
uint32_t	H5_checksum_lookup3 (const void *key, size_t length, uint32_t initval)
uint32_t	H5_checksum_metadata (const void *data, size_t len, uint32_t initval)
uint32_t	H5_hash_string (const char *str)

Macro Definition Documentation

H5_CRC_QUOTIENT

#define H5_CRC_QUOTIENT   0x04C11DB7

H5_lookup3_final

#define H5_lookup3_final	(		a,
			b,
			c
	)

Value:

{ \
  c ^= b; c -= H5_lookup3_rot(b,14); \
  a ^= c; a -= H5_lookup3_rot(c,11); \
  b ^= a; b -= H5_lookup3_rot(a,25); \
  c ^= b; c -= H5_lookup3_rot(b,16); \
  a ^= c; a -= H5_lookup3_rot(c,4);  \
  b ^= a; b -= H5_lookup3_rot(a,14); \
  c ^= b; c -= H5_lookup3_rot(b,24); \
}

H5_lookup3_mix

#define H5_lookup3_mix	(		a,
			b,
			c
	)

Value:

{ \
  a -= c;  a ^= H5_lookup3_rot(c, 4);  c += b; \
  b -= a;  b ^= H5_lookup3_rot(a, 6);  a += c; \
  c -= b;  c ^= H5_lookup3_rot(b, 8);  b += a; \
  a -= c;  a ^= H5_lookup3_rot(c,16);  c += b; \
  b -= a;  b ^= H5_lookup3_rot(a,19);  a += c; \
  c -= b;  c ^= H5_lookup3_rot(b, 4);  b += a; \
}

H5_lookup3_rot

#define H5_lookup3_rot	(		x,
			k
	)		(((x)<<(k)) ^ ((x)>>(32-(k))))

Function Documentation

H5_checksum_crc()

uint32_t H5_checksum_crc	(	const void *	_data,
		size_t	len
	)

H5_checksum_fletcher32()

uint32_t H5_checksum_fletcher32	(	const void *	_data,
		size_t	_len
	)

H5_checksum_lookup3()

uint32_t H5_checksum_lookup3	(	const void *	key,
		size_t	length,
		uint32_t	initval
	)

H5_checksum_metadata()

uint32_t H5_checksum_metadata	(	const void *	data,
		size_t	len,
		uint32_t	initval
	)

H5_hash_string()

uint32_t H5_hash_string

(

const char *

str

)