1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
|
/* -*- c++ -*- */
/*
* Copyright 2019 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/fft/fft_shift.h>
#include <boost/test/unit_test.hpp>
#include <vector>
namespace gr {
namespace fft {
BOOST_AUTO_TEST_CASE(t1)
{
fft::fft_shift<int> s(1023);
std::vector<int> x_even{ 0, 1, 2, 3, -4, -3, -2, -1 };
std::vector<int> y_even{ -4, -3, -2, -1, 0, 1, 2, 3 }; // expected result
s.shift(x_even);
BOOST_TEST(x_even == y_even, boost::test_tools::per_element());
// two shifts should not change the result
s.shift(x_even);
s.shift(x_even);
BOOST_TEST(x_even == y_even, boost::test_tools::per_element());
}
BOOST_AUTO_TEST_CASE(t2)
{
fft::fft_shift<int> s(7);
std::vector<int> x_odd{ 0, 1, 2, 3, -3, -2, -1 };
std::vector<int> y_odd{ -3, -2, -1, 0, 1, 2, 3 }; // expected result
s.shift(x_odd);
BOOST_TEST(x_odd == y_odd, boost::test_tools::per_element());
}
} /* namespace fft */
} /* namespace gr */
|
