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view src/win32/7zip/7z/C/7zCrc.h @ 1:f9f4f1b99eed

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importing src directory
author Robert McIntyre <rlm@mit.edu>
date Sat, 03 Mar 2012 10:31:27 -0600
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     1 /* 7zCrc.h -- CRC32 calculation



     2 2008-03-13



     3 Igor Pavlov



     4 Public domain */



     5 



     6 #ifndef __7Z_CRC_H



     7 #define __7Z_CRC_H



     8 



     9 #include <stddef.h>



    10 



    11 #include "Types.h"



    12 



    13 extern UInt32 g_CrcTable[];



    14 



    15 void MY_FAST_CALL CrcGenerateTable(void);



    16 



    17 #define CRC_INIT_VAL 0xFFFFFFFF



    18 #define CRC_GET_DIGEST(crc) ((crc) ^ 0xFFFFFFFF)



    19 #define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8))



    20 



    21 UInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size);



    22 UInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size);



    23 



    24 #endif