Leaked source code of windows server 2003
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/*
* C R C . H * * CRC Implementation * * Copyright 1986-1997 Microsoft Corporation, All Rights Reserved */
#ifndef _CRC_H_
#define _CRC_H_
#ifdef __cplusplus
extern "C" {#endif
// Table used for CRC calculation
//
extern const DWORD g_rgdwCRC[256];
// Basic CRC function
//
DWORD DwComputeCRC (DWORD dwCRC, PVOID pv, UINT cb);
// Basic CRC iteration -- for use where DwComputeCRC is insufficient
//
#define CRC_COMPUTE(_crc,_ch) (g_rgdwCRC[((_crc) ^ (_ch)) & 0xff] ^ ((_crc) >> 8))
#ifdef __cplusplus
}
// CRC'd string classes
//
#include <crcsz.h>
#endif // __cplusplus
#endif // _CRC_H_
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