1/* 7zCrc.h -- CRC32 calculation 22009-11-21 : Igor Pavlov : Public domain */ 3 4#ifndef __7Z_CRC_H 5#define __7Z_CRC_H 6 7#include "Types.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 26