1/* 7zCrc.h -- CRC32 calculation
 22013-01-18 : Igor Pavlov : Public domain */
 3
 4#ifndef __7Z_CRC_H
 5#define __7Z_CRC_H
 6
 7#include "7zTypes.h"
 8
 9EXTERN_C_BEGIN
10
11extern UInt32 g_CrcTable[];
12
13/* Call CrcGenerateTable one time before other CRC functions */
14void MY_FAST_CALL CrcGenerateTable(void);
15
16#define CRC_INIT_VAL 0xFFFFFFFF
17#define CRC_GET_DIGEST(crc) ((crc) ^ CRC_INIT_VAL)
18#define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
19
20UInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size);
21UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size);
22
23EXTERN_C_END
24
25#endif