1 files changed, 102 insertions, 0 deletions
diff --git a/gr-blocks/lib/exponentiate_const_cci_impl.cc b/gr-blocks/lib/exponentiate_const_cci_impl.cc
new file mode 100644
index 0000000000..c46930febb
--- /dev/null
+++ b/gr-blocks/lib/exponentiate_const_cci_impl.cc
@@ -0,0 +1,102 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2017 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 <gnuradio/io_signature.h>
+#include "exponentiate_const_cci_impl.h"
+#include <volk/volk.h>
+
+namespace gr {
+  namespace blocks {
+
+    exponentiate_const_cci::sptr
+    exponentiate_const_cci::make(int exponent, size_t vlen)
+    {
+      return gnuradio::get_initial_sptr
+        (new exponentiate_const_cci_impl(exponent, vlen));
+    }
+
+    /*
+     * The private constructor
+     */
+    exponentiate_const_cci_impl::exponentiate_const_cci_impl(int exponent, size_t vlen)
+      : gr::sync_block("exponentiate_const_cci",
+              gr::io_signature::make(1, -1, sizeof(gr_complex)*vlen),
+              gr::io_signature::make(1, -1, sizeof(gr_complex)*vlen)),
+        d_exponent(exponent),
+        d_vlen(vlen)
+    {
+      const int alignment_multiple = volk_get_alignment()/sizeof(gr_complex);
+      set_alignment(std::max(1, alignment_multiple));
+    }
+
+    /*
+     * Our virtual destructor.
+     */
+    exponentiate_const_cci_impl::~exponentiate_const_cci_impl()
+    {
+    }
+
+    bool
+    exponentiate_const_cci_impl::check_topology(int ninputs, int noutputs)
+    {
+      return ninputs == noutputs;
+    }
+
+    void
+    exponentiate_const_cci_impl::set_exponent(int exponent) {
+      gr::thread::scoped_lock guard(d_setlock);
+      d_exponent = exponent;
+    }
+
+    int
+    exponentiate_const_cci_impl::work(int noutput_items,
+        gr_vector_const_void_star &input_items,
+        gr_vector_void_star &output_items)
+    {
+      gr::thread::scoped_lock guard(d_setlock);
+
+      for(unsigned int i = 0; i < input_items.size(); i++) {
+        const gr_complex *in = (const gr_complex *) input_items[i];
+        gr_complex *out = (gr_complex *) output_items[i];
+        
+        if(d_exponent > 1) {
+          volk_32fc_x2_multiply_32fc(out, in, in, noutput_items*d_vlen);
+          for(int j = 2; j < d_exponent; j++) {
+            volk_32fc_x2_multiply_32fc(out, out, in, noutput_items*d_vlen);
+          }
+        }
+        else {
+          memcpy(out, in, sizeof(gr_complex)*noutput_items*d_vlen);
+        }
+      }
+
+      // Tell runtime system how many output items we produced.
+      return noutput_items;
+    }
+
+  } /* namespace blocks */
+} /* namespace gr */
+