/* -*- c++ -*- */
/*
 * Copyright 2005,2012 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_BLOCKS_COMPLEX_TO_MAG_H
#define INCLUDED_BLOCKS_COMPLEX_TO_MAG_H

#include <gnuradio/blocks/api.h>
#include <gnuradio/sync_block.h>

namespace gr {
  namespace blocks {

    /*!
     * \brief complex in, magnitude out (float)
     * \ingroup type_converters_blk
     *
     * \details
     * Calculates the magnitude of the complex samples:
     *
     * \li output[0][m] = |input[0][m]|
     *
     * Or:
     * \li output[0][m] = sqrt(Re{input[0][m]}^2 + Im{input[0][m]}^2)
     *
     * The input stream can be a vector of length \p vlen, and for
     * each vector, each item is converted using the above
     * function. So above, m is from 0 to noutput_items*vlen for each
     * call to work.
     */
    class BLOCKS_API complex_to_mag : virtual public sync_block
    {
    public:
      // gr::blocks::complex_to_mag_ff::sptr
      typedef boost::shared_ptr<complex_to_mag> sptr;

      /*!
       * Build a complex to magnitude block.
       *
       * \param vlen vector len (default 1)
       */
      static sptr make(size_t vlen=1);
    };

  } /* namespace blocks */
} /* namespace gr */

#endif /* INCLUDED_BLOCKS_COMPLEX_TO_MAG_H */
