/* -*- c++ -*- */

/*

 * Copyright 2005 Free Software Foundation, Inc.

 * 

 * This file is part of GNU Radio

 * 

 * GNU Radio is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation; either version 3, or (at your option)

 * any later version.

 * 

 * GNU Radio is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 * 

 * You should have received a copy of the GNU General Public License

 * along with GNU Radio; see the file COPYING.  If not, write to

 * the Free Software Foundation, Inc., 51 Franklin Street,

 * Boston, MA 02110-1301, USA.

 */

#ifndef INCLUDED_GR_CRC32_H

#define INCLUDED_GR_CRC32_H

#include <string>

#include <gr_types.h>

/*!

 * \brief update running CRC-32

 * \ingroup misc

 *

 * Update a running CRC with the bytes buf[0..len-1] The CRC should be

 * initialized to all 1's, and the transmitted value is the 1's

 * complement of the final running CRC.  The resulting CRC should be

 * transmitted in big endian order.

 */

unsigned int 

gr_update_crc32(unsigned int crc, const unsigned char *buf, size_t len);

unsigned int 

gr_update_crc32(unsigned int crc, const std::string buf);

unsigned int 

gr_crc32(const unsigned char *buf, size_t len);

unsigned int 

gr_crc32(const std::string buf);

#endif /* INCLUDED_CRC32_H */