gr_sub_ii.cc

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/* -*- c++ -*- */
/*
 * Copyright 2004 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.
 */

// WARNING: this file is machine generated.  Edits will be over written

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <gr_sub_ii.h>
#include <gr_io_signature.h>

gr_sub_ii_sptr
gr_make_sub_ii ()
{
  return gr_sub_ii_sptr (new gr_sub_ii ());
}

gr_sub_ii::gr_sub_ii ()
  : gr_sync_block ("sub_ii",
		   gr_make_io_signature (1, -1, sizeof (int)),
		   gr_make_io_signature (1,  1, sizeof (int)))
{
}

int
gr_sub_ii::work (int noutput_items,
		   gr_vector_const_void_star &input_items,
		   gr_vector_void_star &output_items)
{
  int *optr = (int *) output_items[0];

  int ninputs = input_items.size ();

  if (ninputs == 1){		// negate
    for (int i = 0; i < noutput_items; i++)
      *optr++ = (int) -((int *) input_items[0])[i];
  }

  else {
    for (int i = 0; i < noutput_items; i++){
      int acc = ((int *) input_items[0])[i];
      for (int j = 1; j < ninputs; j++)
	acc -= ((int *) input_items[j])[i];

      *optr++ = (int) acc;
    }
  }

  return noutput_items;
}