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crc.h
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crc.h
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/***************************************************************
BayCom(R) Packet-Radio fuer IBM PC
OpenBayCom-Mailbox
--------------------------------------------------------
Definitionen fuer saemtliche CRC-routinen in der Mailbox
--------------------------------------------------------
Copyright (C) Florian Radlherr
Taubenbergstr. 32
83627 Warngau
Alle Rechte vorbehalten / All Rights Reserved
***************************************************************/
//19990615 DH3MB Cleaned up the whole CRC-stuff
/*---------------------------------------------------------------------------*/
class crc
{
public:
virtual void update (char) = 0; // abstract
virtual void update (char *, unsigned short int);
void readfile(char *, off_t);
virtual ~crc (void) {};
};
/*---------------------------------------------------------------------------*/
class crcthp : public crc
{
public:
crcthp(void);
unsigned short int result;
virtual void update (char);
virtual void update (char *pp, unsigned short int num)
{ crc::update(pp, num); }
};
/*---------------------------------------------------------------------------*/
class crcfbb : public crc
{
public:
crcfbb(void);
unsigned short int result;
virtual void update (char);
virtual void update (char *pp, unsigned short int num)
{ crc::update(pp, num); }
};
/*---------------------------------------------------------------------------*/
class crcfcs : public crc
{
public:
crcfcs(void);
unsigned short int result;
virtual void update (char);
virtual void update (char *pp, unsigned short int num)
{ crc::update(pp, num); }
};
/*---------------------------------------------------------------------------*/
class crc16 : public crc
{
public:
crc16(void);
unsigned short int result;
virtual void update (char);
virtual void update (char *pp, unsigned short int num)
{ crc::update(pp, num); }
};
/*---------------------------------------------------------------------------*/
class crc32 : public crc
{
public:
crc32(void);
unsigned long int result;
virtual void update (char);
virtual void update (char *pp, unsigned short int num)
{ crc::update(pp, num); }
};
/*---------------------------------------------------------------------------*/