// Crc32.h: interface for the Crc32 class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_)
#define AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

class Crc32  
{
private :
	static unsigned long table[ 256 ];
	static int initialized;
	unsigned long crc;
public :
	Crc32( unsigned long init_value );
	void update( int c );
    unsigned long value( void )
	{ 
		return crc; 
	}
// public:
// 	Crc32();
// 	virtual ~Crc32();
};

inline void Crc32::update( int c )
{
    crc = table[ ( (int) crc ^ ( c & 0xff ) ) & 0xff ] ^
		( ( crc >> 8 ) & 0x00FFFFFFL );
}

#endif // !defined(AFX_CRC32_H__B1BA997F_CAA4_4FC6_B899_EF9C3CCC286B__INCLUDED_)