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pg_crc.h File Reference

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Macros

#define INIT_TRADITIONAL_CRC32(crc) ((crc) = 0xFFFFFFFF)

#define FIN_TRADITIONAL_CRC32(crc) ((crc) ^= 0xFFFFFFFF)

#define COMP_TRADITIONAL_CRC32(crc, data, len) COMP_CRC32_NORMAL_TABLE(crc, data, len, pg_crc32_table)

#define EQ_TRADITIONAL_CRC32(c1, c2) ((c1) == (c2))

#define COMP_CRC32_NORMAL_TABLE(crc, data, len, table)

#define INIT_LEGACY_CRC32(crc) ((crc) = 0xFFFFFFFF)

#define FIN_LEGACY_CRC32(crc) ((crc) ^= 0xFFFFFFFF)

#define COMP_LEGACY_CRC32(crc, data, len) COMP_CRC32_REFLECTED_TABLE(crc, data, len, pg_crc32_table)

#define EQ_LEGACY_CRC32(c1, c2) ((c1) == (c2))

#define COMP_CRC32_REFLECTED_TABLE(crc, data, len, table)

Typedefs

typedef uint32 pg_crc32

Variables

PGDLLIMPORT const uint32 pg_crc32_table [256]

Macro Definition Documentation

◆ COMP_CRC32_NORMAL_TABLE

#define COMP_CRC32_NORMAL_TABLE ( crc,

data,

len,

table

)

Value:

do { \

const unsigned char *__data = (const unsigned char *) (data); \

uint32 __len = (len); \

\

while (__len-- > 0) \

{ \

int __tab_index = ((int) (crc) ^ *__data++) & 0xFF; \

(crc) = table[__tab_index] ^ ((crc) >> 8); \

} \

} while (0)

len

const void size_t len

Definition: pg_crc32c_sse42.c:28

data

const void * data

Definition: pg_crc32c_sse42.c:27

crc

return crc

Definition: pg_crc32c_sse42.c:72

while

while(p+4<=pend)

Definition: pg_crc32c_sse42.c:58

table

static const struct lconv_member_info table[]

Definition: pg_localeconv_r.c:63

Definition at line 53 of file pg_crc.h.

◆ COMP_CRC32_REFLECTED_TABLE

#define COMP_CRC32_REFLECTED_TABLE ( crc,

data,

len,

table

)

Value:

do { \

const unsigned char *__data = (const unsigned char *) (data); \

uint32 __len = (len); \

\

while (__len-- > 0) \

{ \

int __tab_index = ((int) ((crc) >> 24) ^ *__data++) & 0xFF; \

(crc) = table[__tab_index] ^ ((crc) << 8); \

} \

} while (0)

Definition at line 89 of file pg_crc.h.

◆ COMP_LEGACY_CRC32

#define COMP_LEGACY_CRC32 ( crc,

data,

len

) COMP_CRC32_REFLECTED_TABLE(crc, data, len, pg_crc32_table)

Definition at line 81 of file pg_crc.h.

◆ COMP_TRADITIONAL_CRC32

#define COMP_TRADITIONAL_CRC32 ( crc,

data,

len

) COMP_CRC32_NORMAL_TABLE(crc, data, len, pg_crc32_table)

Definition at line 48 of file pg_crc.h.

◆ EQ_LEGACY_CRC32

#define EQ_LEGACY_CRC32 ( c1,

c2

) ((c1) == (c2))

Definition at line 83 of file pg_crc.h.

◆ EQ_TRADITIONAL_CRC32

#define EQ_TRADITIONAL_CRC32 ( c1,

c2

) ((c1) == (c2))

Definition at line 50 of file pg_crc.h.

◆ FIN_LEGACY_CRC32

#define FIN_LEGACY_CRC32 ( crc ) ((crc) ^= 0xFFFFFFFF)

Definition at line 80 of file pg_crc.h.

◆ FIN_TRADITIONAL_CRC32

#define FIN_TRADITIONAL_CRC32 ( crc ) ((crc) ^= 0xFFFFFFFF)

Definition at line 47 of file pg_crc.h.

◆ INIT_LEGACY_CRC32

#define INIT_LEGACY_CRC32 ( crc ) ((crc) = 0xFFFFFFFF)

Definition at line 79 of file pg_crc.h.

◆ INIT_TRADITIONAL_CRC32

#define INIT_TRADITIONAL_CRC32 ( crc ) ((crc) = 0xFFFFFFFF)

Definition at line 46 of file pg_crc.h.

Typedef Documentation

◆ pg_crc32

typedef uint32 pg_crc32

Definition at line 37 of file pg_crc.h.

Variable Documentation

◆ pg_crc32_table

PGDLLIMPORT const uint32 pg_crc32_table[256]

extern

Definition at line 35 of file pg_crc.c.