CheckSum.h

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/*
 *  Copyright (c) 2014, Oculus VR, Inc.
 *  All rights reserved.
 *
 *  This source code is licensed under the BSD-style license found in the
 *  RakNet License.txt file in the licenses directory of this source tree. An additional grant 
 *  of patent rights can be found in the RakNet Patents.txt file in the same directory.
 *
 *
 *  Modified work: Copyright (c) 2017, SLikeSoft UG (haftungsbeschränkt)
 *
 *  This source code was modified by SLikeSoft. Modifications are licensed under the MIT-style
 *  license found in the license.txt file in the root directory of this source tree.
 */


#ifndef __CHECKSUM_H
#define __CHECKSUM_H

#include "memoryoverride.h"

class CheckSum
{

public:
    
    
    CheckSum()
    {
        Clear();
    }
    
    void Clear()
    {
        sum = 0;
        r = 55665;
        c1 = 52845;
        c2 = 22719;
    }
    
    void Add ( unsigned int w );
    
    
    void Add ( unsigned short w );
    
    void Add ( unsigned char* b, unsigned int length );
    
    void Add ( unsigned char b );
    
    unsigned int Get ()
    {
        return sum;
    }
    
protected:
    unsigned short r;
    unsigned short c1;
    unsigned short c2;
    unsigned int sum;
};

#endif