From 78d149cd3d230ca9310401496e5770401aeb478c Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Sun, 12 Aug 2012 19:42:31 -0400
Subject: digital: updated blocks to make qa_constellation* tests pass.
---
gr-digital/lib/diff_phasor_cc_impl.cc | 69 +++++++++++++++++++++++++++++++++++
1 file changed, 69 insertions(+)
create mode 100644 gr-digital/lib/diff_phasor_cc_impl.cc
(limited to 'gr-digital/lib/diff_phasor_cc_impl.cc')
diff --git a/gr-digital/lib/diff_phasor_cc_impl.cc b/gr-digital/lib/diff_phasor_cc_impl.cc
new file mode 100644
index 0000000000..0e7a108121
--- /dev/null
+++ b/gr-digital/lib/diff_phasor_cc_impl.cc
@@ -0,0 +1,69 @@
+/* -*- c++ -*- */
+/*
+ * Copyright 2006,2010,2012 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 "diff_phasor_cc_impl.h"
+#include <gr_io_signature.h>
+
+namespace gr {
+ namespace digital {
+
+ diff_phasor_cc::sptr
+ diff_phasor_cc::make()
+ {
+ return gnuradio::get_initial_sptr
+ (new diff_phasor_cc_impl());
+ }
+
+ diff_phasor_cc_impl::diff_phasor_cc_impl()
+ : gr_sync_block("diff_phasor_cc",
+ gr_make_io_signature(1, 1, sizeof(gr_complex)),
+ gr_make_io_signature(1, 1, sizeof(gr_complex)))
+ {
+ set_history(2);
+ }
+
+ diff_phasor_cc_impl::~diff_phasor_cc_impl()
+ {
+ }
+
+ int
+ diff_phasor_cc_impl::work(int noutput_items,
+ gr_vector_const_void_star &input_items,
+ gr_vector_void_star &output_items)
+ {
+ gr_complex const *in = (const gr_complex*)input_items[0];
+ gr_complex *out = (gr_complex*)output_items[0];
+ in += 1; // ensure that i - 1 is valid.
+
+ for(int i = 0; i < noutput_items; i++) {
+ out[i] = in[i] * conj(in[i-1]);
+ }
+
+ return noutput_items;
+ }
+
+ } /* namespace digital */
+} /* namespace gr */
--
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