1 /* -*- c++ -*- */
2 /*
3 * Copyright 2004,2009,2010,2012,2018 Free Software Foundation, Inc.
4 *
5 * This file is part of GNU Radio
6 *
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)
10 * any later version.
11 *
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.
16 *
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.
21 */
22
23
24 #ifdef HAVE_CONFIG_H
25 #include "config.h"
26 #endif
27
28 #include "divide_impl.h"
29 #include <gnuradio/io_signature.h>
30 #include <volk/volk.h>
31
32 namespace gr {
33 namespace blocks {
34
35 template <class T>
make(size_t vlen)36 typename divide<T>::sptr divide<T>::make(size_t vlen)
37 {
38 return gnuradio::get_initial_sptr(new divide_impl<T>(vlen));
39 }
40
41 template <>
divide_impl(size_t vlen)42 divide_impl<float>::divide_impl(size_t vlen)
43 : sync_block("divide",
44 io_signature::make(2, -1, sizeof(float) * vlen),
45 io_signature::make(1, 1, sizeof(float) * vlen)),
46 d_vlen(vlen)
47 {
48 }
49
50 template <>
work(int noutput_items,gr_vector_const_void_star & input_items,gr_vector_void_star & output_items)51 int divide_impl<float>::work(int noutput_items,
52 gr_vector_const_void_star& input_items,
53 gr_vector_void_star& output_items)
54 {
55 float* optr = (float*)output_items[0];
56 size_t ninputs = input_items.size();
57 float* numerator = (float*)input_items[0];
58 for (size_t inp = 1; inp < ninputs; ++inp) {
59 volk_32f_x2_divide_32f(
60 optr, numerator, (float*)input_items[inp], noutput_items * d_vlen);
61 numerator = optr;
62 }
63
64 return noutput_items;
65 }
66
67 template <>
divide_impl(size_t vlen)68 divide_impl<gr_complex>::divide_impl(size_t vlen)
69 : sync_block("divide_cc",
70 io_signature::make(2, -1, sizeof(gr_complex) * vlen),
71 io_signature::make(1, 1, sizeof(gr_complex) * vlen)),
72 d_vlen(vlen)
73 {
74 }
75
76 template <>
work(int noutput_items,gr_vector_const_void_star & input_items,gr_vector_void_star & output_items)77 int divide_impl<gr_complex>::work(int noutput_items,
78 gr_vector_const_void_star& input_items,
79 gr_vector_void_star& output_items)
80 {
81 gr_complex* optr = (gr_complex*)output_items[0];
82 size_t ninputs = input_items.size();
83 gr_complex* numerator = (gr_complex*)input_items[0];
84 for (size_t inp = 1; inp < ninputs; ++inp) {
85 volk_32fc_x2_divide_32fc(
86 optr, numerator, (gr_complex*)input_items[inp], noutput_items * d_vlen);
87 numerator = optr;
88 }
89
90 return noutput_items;
91 }
92
93 template <class T>
divide_impl(size_t vlen)94 divide_impl<T>::divide_impl(size_t vlen)
95 : sync_block("divide",
96 io_signature::make(1, -1, sizeof(T) * vlen),
97 io_signature::make(1, 1, sizeof(T) * vlen)),
98 d_vlen(vlen)
99 {
100 }
101
102 template <class T>
work(int noutput_items,gr_vector_const_void_star & input_items,gr_vector_void_star & output_items)103 int divide_impl<T>::work(int noutput_items,
104 gr_vector_const_void_star& input_items,
105 gr_vector_void_star& output_items)
106 {
107 T* optr = (T*)output_items[0];
108
109 int ninputs = input_items.size();
110
111 for (size_t i = 0; i < noutput_items * d_vlen; i++) {
112 T acc = ((T*)input_items[0])[i];
113 for (int j = 1; j < ninputs; j++)
114 acc /= ((T*)input_items[j])[i];
115
116 *optr++ = (T)acc;
117 }
118
119 return noutput_items;
120 }
121
122 template class divide<std::int16_t>;
123 template class divide<std::int32_t>;
124 template class divide<float>;
125 template class divide<gr_complex>;
126 } /* namespace blocks */
127 } /* namespace gr */
128