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diff --git a/gnuradio-runtime/include/gnuradio/fxpt_nco.h b/gnuradio-runtime/include/gnuradio/fxpt_nco.h
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+++ b/gnuradio-runtime/include/gnuradio/fxpt_nco.h
@@ -0,0 +1,160 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2002,2004,2013 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_GR_FXPT_NCO_H
+#define INCLUDED_GR_FXPT_NCO_H
+
+#include <gnuradio/api.h>
+#include <gnuradio/fxpt.h>
+#include <gnuradio/gr_complex.h>
+#include <stdint.h>
+
+namespace gr {
+
+  /*!
+   * \brief Numerically Controlled Oscillator (NCO)
+   * \ingroup misc
+   */
+  class /*GR_RUNTIME_API*/ fxpt_nco
+  {
+    uint32_t d_phase;
+    int32_t d_phase_inc;
+
+  public:
+    fxpt_nco() : d_phase(0), d_phase_inc(0) {}
+
+    ~fxpt_nco() {}
+
+    // radians
+    void set_phase(float angle) {
+      d_phase = gr::fxpt::float_to_fixed(angle);
+    }
+
+    void adjust_phase(float delta_phase) {
+      d_phase += gr::fxpt::float_to_fixed(delta_phase);
+    }
+
+    // angle_rate is in radians / step
+    void set_freq(float angle_rate){
+      d_phase_inc = gr::fxpt::float_to_fixed(angle_rate);
+    }
+
+    // angle_rate is a delta in radians / step
+    void adjust_freq(float delta_angle_rate)
+    {
+      d_phase_inc += gr::fxpt::float_to_fixed(delta_angle_rate);
+    }
+
+    // increment current phase angle
+
+    void step()
+    {
+      d_phase += d_phase_inc;
+    }
+
+    void step(int n)
+    {
+      d_phase += d_phase_inc * n;
+    }
+
+    // units are radians / step
+    float get_phase() const { return gr::fxpt::fixed_to_float(d_phase); }
+    float get_freq() const { return gr::fxpt::fixed_to_float(d_phase_inc); }
+
+    // compute sin and cos for current phase angle
+    void sincos(float *sinx, float *cosx) const
+    {
+      *sinx = gr::fxpt::sin(d_phase);
+      *cosx = gr::fxpt::cos(d_phase);
+    }
+
+    // compute cos and sin for a block of phase angles
+    void sincos(gr_complex *output, int noutput_items, double ampl=1.0)
+    {
+      for(int i = 0; i < noutput_items; i++) {
+        output[i] = gr_complex(gr::fxpt::cos(d_phase) * ampl, gr::fxpt::sin(d_phase) * ampl);
+        step();
+      }
+    }
+
+    // compute sin for a block of phase angles
+    void sin(float *output, int noutput_items, double ampl=1.0)
+    {
+      for(int i = 0; i < noutput_items; i++) {
+        output[i] = (float)(gr::fxpt::sin(d_phase) * ampl);
+        step();
+      }
+    }
+
+    // compute cos for a block of phase angles
+    void cos(float *output, int noutput_items, double ampl=1.0)
+    {
+      for(int i = 0; i < noutput_items; i++) {
+        output[i] = (float)(gr::fxpt::cos(d_phase) * ampl);
+        step ();
+      }
+    }
+
+    // compute sin for a block of phase angles
+    void sin(short *output, int noutput_items, double ampl=1.0)
+    {
+      for(int i = 0; i < noutput_items; i++) {
+        output[i] = (short)(gr::fxpt::sin(d_phase) * ampl);
+        step();
+      }
+    }
+
+    // compute cos for a block of phase angles
+    void cos(short *output, int noutput_items, double ampl=1.0)
+    {
+      for(int i = 0; i < noutput_items; i++) {
+        output[i] = (short)(gr::fxpt::cos(d_phase) * ampl);
+        step();
+      }
+    }
+
+    // compute sin for a block of phase angles
+    void sin(int *output, int noutput_items, double ampl=1.0)
+    {
+      for(int i = 0; i < noutput_items; i++) {
+        output[i] = (int)(gr::fxpt::sin(d_phase) * ampl);
+        step();
+      }
+    }
+
+    // compute cos for a block of phase angles
+    void cos(int *output, int noutput_items, double ampl=1.0)
+    {
+      for(int i = 0; i < noutput_items; i++) {
+      output[i] = (int)(gr::fxpt::cos(d_phase) * ampl);
+      step();
+      }
+    }
+
+    // compute cos or sin for current phase angle
+    float cos() const { return gr::fxpt::cos(d_phase); }
+    float sin() const { return gr::fxpt::sin(d_phase); }
+  };
+
+} /* namespace gr */
+
+#endif /* INCLUDED_GR_FXPT_NCO_H */