/* -*- 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.
 */

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

#include <gr_rail_ff.h>
#include <gr_io_signature.h>

gr_rail_ff_sptr
gr_make_rail_ff(float lo, float hi)
{
  return gr_rail_ff_sptr(new gr_rail_ff(lo, hi));
}

gr_rail_ff::gr_rail_ff(float lo, float hi)
  : gr_sync_block("rail_ff",
		  gr_make_io_signature(1, 1, sizeof(float)),
		  gr_make_io_signature(1, 1, sizeof(float))),
    d_lo(lo), d_hi(hi)
{
}

int
gr_rail_ff::work(int noutput_items,
		 gr_vector_const_void_star &input_items,
		 gr_vector_void_star &output_items)
{
  const float *in  = (const float *) input_items[0];
  float       *out = (float *) output_items[0];
  
  for (int i = 0; i < noutput_items; i++) {
    if (in[i] < d_lo)
      out[i] = d_lo;
    else if (in[i] > d_hi)
      out[i] = d_hi;
    else
      out[i] = in[i];
  }

  return noutput_items;
}
