text: /* 7zCrc.h -- CRC32 calculation
  2013-01-18 : Igor Pavlov : Public domain */
  
  #ifndef __7Z_CRC_H
  #define __7Z_CRC_H
  
  #include "7zTypes.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
  