1baa3858d3f5d128a5c8466b700098109edcad5f2repo sync/* 7zCrc.h -- CRC32 calculation 2baa3858d3f5d128a5c8466b700098109edcad5f2repo sync2009-11-21 : Igor Pavlov : Public domain */ 3baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 4baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#ifndef __7Z_CRC_H 5baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define __7Z_CRC_H 6baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 7baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#include "Types.h" 8baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 9baa3858d3f5d128a5c8466b700098109edcad5f2repo syncEXTERN_C_BEGIN 10baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 11baa3858d3f5d128a5c8466b700098109edcad5f2repo syncextern UInt32 g_CrcTable[]; 12baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 13baa3858d3f5d128a5c8466b700098109edcad5f2repo sync/* Call CrcGenerateTable one time before other CRC functions */ 14baa3858d3f5d128a5c8466b700098109edcad5f2repo syncvoid MY_FAST_CALL CrcGenerateTable(void); 15baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 16baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define CRC_INIT_VAL 0xFFFFFFFF 17baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define CRC_GET_DIGEST(crc) ((crc) ^ CRC_INIT_VAL) 18baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#define CRC_UPDATE_BYTE(crc, b) (g_CrcTable[((crc) ^ (b)) & 0xFF] ^ ((crc) >> 8)) 19baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 20baa3858d3f5d128a5c8466b700098109edcad5f2repo syncUInt32 MY_FAST_CALL CrcUpdate(UInt32 crc, const void *data, size_t size); 21baa3858d3f5d128a5c8466b700098109edcad5f2repo syncUInt32 MY_FAST_CALL CrcCalc(const void *data, size_t size); 22baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 23baa3858d3f5d128a5c8466b700098109edcad5f2repo syncEXTERN_C_END 24baa3858d3f5d128a5c8466b700098109edcad5f2repo sync 25baa3858d3f5d128a5c8466b700098109edcad5f2repo sync#endif 26