other-licenses/7zstub/src/C/XzCrc64.h

   1 /* XzCrc64.h -- CRC64 calculation
   2 2013-01-18 : Igor Pavlov : Public domain */
   3
   4 #ifndef __XZ_CRC64_H
   5 #define __XZ_CRC64_H
   6
   7 #include <stddef.h>
   8
   9 #include "7zTypes.h"
  10
  11 EXTERN_C_BEGIN
  12
  13 extern UInt64 g_Crc64Table[];
  14
  15 void MY_FAST_CALL Crc64GenerateTable(void);
  16
  17 #define CRC64_INIT_VAL UINT64_CONST(0xFFFFFFFFFFFFFFFF)
  18 #define CRC64_GET_DIGEST(crc) ((crc) ^ CRC64_INIT_VAL)
  19 #define CRC64_UPDATE_BYTE(crc, b) (g_Crc64Table[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))
  20
  21 UInt64 MY_FAST_CALL Crc64Update(UInt64 crc, const void *data, size_t size);
  22 UInt64 MY_FAST_CALL Crc64Calc(const void *data, size_t size);
  23
  24 EXTERN_C_END
  25
  26 #endif