crc32.h

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/* -*- c++ -*- */
/*
 * Copyright 2005,2011,2012 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_DIGITAL_CRC32_H
#define INCLUDED_DIGITAL_CRC32_H
 
#include <gnuradio/digital/api.h>
#include <gnuradio/types.h>
#include <string>
 
namespace gr {
namespace digital {
 
/*!
 * \brief update running CRC-32
 * \ingroup packet_operators_blk
 *
 * \details
 * 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.
 */
DIGITAL_API unsigned int
update_crc32(unsigned int crc, const unsigned char* buf, size_t len);
 
DIGITAL_API unsigned int update_crc32(unsigned int crc, const std::string buf);
 
DIGITAL_API unsigned int crc32(const unsigned char* buf, size_t len);
 
DIGITAL_API unsigned int crc32(const std::string buf);
 
} /* namespace digital */
} /* namespace gr */
 
#endif /* INCLUDED_CRC32_H */