Imported Upstream version 3.2.2

[debian/gnuradio] / gnuradio-core / src / lib / filter / gr_single_pole_avg.h

diff --git a/gnuradio-core/src/lib/filter/gr_single_pole_avg.h b/gnuradio-core/src/lib/filter/gr_single_pole_avg.h
deleted file mode 100644 (file)
index 0995eee..0000000
--- a/gnuradio-core/src/lib/filter/gr_single_pole_avg.h
+++ /dev/null
@@ -1,110 +0,0 @@
-/* -*- c++ -*- */
-/*
- * Copyright 2002 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 _GR_SINGLE_POLE_AVG_H_
-#define _GR_SINGLE_POLE_AVG_H_
-
-#include <stdexcept>
-
-/*!
- * \brief class template for single pole moving average filter
- */
-template<class o_type, class i_type, class tap_type> 
-class gr_single_pole_avg {
-public:
-  /*!
-   * \brief construct new single pole moving average filter with given alpha
-   *
-   * computes y(i) = alpha * x(i) - (1-alpha) * y(i-1)
-   */
-  gr_single_pole_avg (tap_type alpha = 1.0)
-  {
-    d_prev_input = 0;
-    set_taps (alpha);
-  }
-
-  /*!
-   * \brief compute a single output value.
-   * \returns the filtered input value.
-   */
-  o_type filter (const i_type input);
-
-  /*!
-   * \brief compute an array of N output values.
-   * \p input must have n valid entries.
-   */
-  void filterN (o_type output[], const i_type input[], unsigned long n);
-
-  /*!
-   * \brief install \p alpha as the current taps.
-   */
-  void set_taps (tap_type alpha)
-  { 
-    if (alpha < 0 || alpha > 1)
-      throw std::out_of_range ("Alpha must be in [0, 1]\n");
-
-    d_alpha = alpha;
-    d_one_minus_alpha = 1.0 - alpha;
-  }
-
-  //! reset state to zero
-  void reset ()
-  {
-    d_prev_input = 0;
-  }
-
-  tap_type prev_input () { return d_prev_input; }
-    
-protected:
-  tap_type     d_alpha;
-  tap_type     d_one_minus_alpha;
-  tap_type     d_prev_input;
-};
-
-
-//
-// general case.  We may want to specialize this
-//
-template<class o_type, class i_type, class tap_type> 
-o_type
-gr_single_pole_avg<o_type, i_type, tap_type>::filter (const i_type input)
-{
-  tap_type     output;
-
-  output = d_alpha * input - d_one_minus_alpha * d_prev_input;
-  d_prev_input = input;
-
-  return (o_type) output;
-}
-
-
-template<class o_type, class i_type, class tap_type> 
-void 
-gr_single_pole_avg<o_type, i_type, tap_type>::filterN (o_type output[],
-                                                      const i_type input[],
-                                                      unsigned long n)
-{
-  for (unsigned i = 0; i < n; i++)
-    output[i] = filter (input[i]);
-}
-
-
-#endif /* _GR_SINGLE_POLE_AVG_H_ */