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test_fftw_r2c.cc
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Sat, Nov 16, 03:01

test_fftw_r2c.cc
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/**
* file test_fftw_r2c.cc
*
* @author Till Junge <till.junge@epfl.ch>
*
* @date 13 May 2017
*
* @brief test fftw real to complex engine
*
* @section LICENCE
*
* Copyright (C) 2017 Till Junge
*
* µSpectre 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.
*
* µSpectre 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 Emacs; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <boost/test/unit_test.hpp>
#include <iostream>
#include "complex"
#include "system/fftw_engine_r2c.hh"
#include "tests.hh"
namespace muSpectre {
template <Dim_t DimS, Dim_t DimM>
struct fftw_r2c_fixture: public FFTW_EngineR2C<DimS,DimM> {
fftw_r2c_fixture()
:FFTW_EngineR2C<DimS,DimM>(std_nb_pix, FFT_PlanFlags::estimate){}
const static typename FFTW_EngineR2C<DimS,DimM>::Ccoord std_nb_pix;
};
template<> const Ccoord_t<1> fftw_r2c_fixture<1,1>::std_nb_pix{3};
template<> const Ccoord_t<2> fftw_r2c_fixture<2,2>::std_nb_pix{5,3};
template<> const Ccoord_t<3> fftw_r2c_fixture<3,3>::std_nb_pix{7,5,3};
using fix2 = fftw_r2c_fixture<2, 2>;
BOOST_FIXTURE_TEST_CASE(half_stride_index_test, fix2) {
Eigen::Matrix<int, Eigen::Dynamic, Eigen::Dynamic, Eigen::RowMajor> mat(fix2::std_nb_pix[0], fix2::std_nb_pix[1]);
mat <<
1, 2, -1,
3, 4, -2,
5, 6, -3,
7, 8, -4,
9, 10, -5;
auto it = begin();
int counter = 1;
const auto end_it = end();
for (; it !=end_it ; ++it) {
BOOST_CHECK_EQUAL(counter, mat.data()[std::get<0>(*it)]);
counter++;
}
}
using fix3 = fftw_r2c_fixture<3, 3>;
BOOST_FIXTURE_TEST_CASE(half_stride_index_test3, fix3) {
int mat[] = {1, 2, -1,
3, 4, -2,
5, 6, -3,
7, 8, -4,
9, 10, -5,
11, 12, -11,
13, 14, -12,
15, 16, -13,
17, 18, -14,
19, 20, -15,
21, 22, -21,
23, 24, -22,
25, 26, -23,
27, 28, -24,
29, 30, -25,
31, 32, -31,
33, 34, -32,
35, 36, -33,
37, 38, -34,
39, 40, -35,
41, 42, -41,
43, 44, -42,
45, 46, -43,
47, 48, -44,
49, 50, -45,
51, 52, -61,
53, 54, -62,
55, 56, -63,
57, 58, -64,
59, 60, -65,
61, 62, -71,
63, 64, -72,
65, 66, -73,
67, 68, -74,
69, 70, -75};
auto it = begin();
int counter = 1;
const auto end_it = end();
for (; it !=end_it ; ++it) {
BOOST_CHECK_EQUAL(counter, mat[std::get<0>(*it)]);
counter++;
}
}
} // muSpectre

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