3 * Copyright 2006 Free Software Foundation, Inc.
5 * This file is part of GNU Radio
7 * GNU Radio is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 3, or (at your option)
12 * GNU Radio is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Radio; see the file COPYING. If not, write to
19 * the Free Software Foundation, Inc., 51 Franklin Street,
20 * Boston, MA 02110-1301, USA.
27 #include <gr_diff_phasor_cc.h>
28 #include <gr_io_signature.h>
30 gr_diff_phasor_cc_sptr
31 gr_make_diff_phasor_cc ()
33 return gr_diff_phasor_cc_sptr (new gr_diff_phasor_cc());
36 gr_diff_phasor_cc::gr_diff_phasor_cc ()
37 : gr_sync_block ("diff_phasor_cc",
38 gr_make_io_signature (1, 1, sizeof (gr_complex)),
39 gr_make_io_signature (1, 1, sizeof (gr_complex)))
45 gr_diff_phasor_cc::~gr_diff_phasor_cc(){}
48 gr_diff_phasor_cc::work (int noutput_items,
49 gr_vector_const_void_star &input_items,
50 gr_vector_void_star &output_items)
52 gr_complex const *in = (const gr_complex *) input_items[0];
53 gr_complex *out = (gr_complex *) output_items[0];
54 in += 1; // ensure that i - 1 is valid.
56 for(int i = 0; i < noutput_items; i++){
57 out[i] = in[i] * conj(in[i-1]);