diff options
Diffstat (limited to 'src/libs/7zip/win/C/7zCrc.h')
-rw-r--r-- | src/libs/7zip/win/C/7zCrc.h | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/libs/7zip/win/C/7zCrc.h b/src/libs/7zip/win/C/7zCrc.h new file mode 100644 index 000000000..38e3e5fbc --- /dev/null +++ b/src/libs/7zip/win/C/7zCrc.h @@ -0,0 +1,25 @@ +/* 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 |