// Crc16.h: interface for the Crc16 class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_CRC16_H__8BE9FD91_A066_4984_AEBA_EA04F8836263__INCLUDED_)
#define AFX_CRC16_H__8BE9FD91_A066_4984_AEBA_EA04F8836263__INCLUDED_

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

class Crc16  
{
private :
	static unsigned short table[ 256 ];
	static int initialized;
	unsigned short crc;
public :
	Crc16( unsigned short init_value );
	void update( int c );
    unsigned short value( void ){ return crc; }

// public:
// 	Crc16();
// 	virtual ~Crc16();

};

inline void Crc16::update( int c )
{
    crc = (unsigned short)
		( table[ (( crc >> 8 ) & 0xff ) ] ^
		( crc << 8 ) ^ ( c & 0xff ) );
}

#endif // !defined(AFX_CRC16_H__8BE9FD91_A066_4984_AEBA_EA04F8836263__INCLUDED_)