AxibugEmuOnline/References/VirtuaNESex_src_191105/7z/7zCrc.h
2024-08-05 17:58:53 +08:00

26 lines
610 B
C

/* 7zCrc.h -- CRC32 calculation
2009-11-21 : Igor Pavlov : Public domain */
#ifndef __7Z_CRC_H
#define __7Z_CRC_H
#include "Types.h"
EXTERN_C_BEGIN
extern UInt32 g_CrcTable[];
/* Call CrcGenerateTable one time before other CRC functions */
void MY_FAST_CALL CrcGenerateTable(void);
#define CRC_INIT_VAL 0xFFFFFFFF
#define CRC_GET_DIGEST(crc) ((crc) ^ CRC_INIT_VAL)
#define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
UInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size);
UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size);
EXTERN_C_END
#endif