/*

Name

  vmcrc.h - compute a CRC-32 checksum of a data stream

Function

Notes

Modified

  06/21/03 MJRoberts  - Creation

*/

#ifndef VMCRC_H

#define VMCRC_H

#include <stdlib.h>

class CVmCRC32

{

public:

    CVmCRC32()

    {

        /* start with zero in the accumulator */

        acc_ = 0;

    }

    /* add the given buffer into the checksum */

    void scan_bytes(const void *ptr, size_t len);

    /* retrieve the current checksum value */

    unsigned long get_crc_val() const { return acc_; }

protected:

    /* the checksum accumulator */

    unsigned long acc_;

};