AP_Crc.cpp File Reference

#include "AP_Crc.h"

Defines
#define	P_16   0xA001
#define	P_32   0xEDB88320L
#define	P_CCITT   0x1021
#define	P_DNP   0xA6BC
Functions
AP_Uint16	CRC16 (AP_Byte *buff, AP_Uint32 size)
AP_Uint32	CRC32 (AP_Byte *buff, AP_Uint32 size)
static void	init_crc16_tab (void)
static void	init_crc32_tab (void)
static void	init_crcccitt_tab (void)
static void	init_crcdnp_tab (void)
static unsigned short	update_crc_16 (unsigned short crc, char c)
static unsigned long	update_crc_32 (unsigned long crc, char c)
static unsigned short	update_crc_ccitt (unsigned short crc, char c)
static unsigned short	update_crc_dnp (unsigned short crc, char c)
Variables
static unsigned short	crc_tab16 [256]
static int	crc_tab16_init = FALSE
static unsigned long	crc_tab32 [256]
static int	crc_tab32_init = FALSE
static unsigned short	crc_tabccitt [256]
static int	crc_tabccitt_init = FALSE
static unsigned short	crc_tabdnp [256]
static int	crc_tabdnp_init = FALSE

---

Define Documentation

#define P_16   0xA001

#define P_32   0xEDB88320L

#define P_CCITT   0x1021

#define P_DNP   0xA6BC

---

Function Documentation

AP_Uint16 CRC16	(	AP_Byte *	buff,
		AP_Uint32	size
	)

AP_Uint32 CRC32	(	AP_Byte *	buff,
		AP_Uint32	size
	)

static void init_crc16_tab

(

void

)

[static]

static void init_crc32_tab

(

void

)

[static]

static void init_crcccitt_tab

(

void

)

[static]

static void init_crcdnp_tab

(

void

)

[static]

static unsigned short update_crc_16	(	unsigned short	crc,
		char	c
	)			[static]

static unsigned long update_crc_32	(	unsigned long	crc,
		char	c
	)			[static]

static unsigned short update_crc_ccitt	(	unsigned short	crc,
		char	c
	)			[static]

static unsigned short update_crc_dnp	(	unsigned short	crc,
		char	c
	)			[static]

---

Variable Documentation

unsigned short crc_tab16[256] [static]

int crc_tab16_init = FALSE [static]

unsigned long crc_tab32[256] [static]

int crc_tab32_init = FALSE [static]

unsigned short crc_tabccitt[256] [static]

int crc_tabccitt_init = FALSE [static]

unsigned short crc_tabdnp[256] [static]

int crc_tabdnp_init = FALSE [static]