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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): Mathieu Carrière
*
* Copyright (C) 2017 INRIA
*
* This program 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 of the License, or
* (at your option) any later version.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_MODULE "kernel"
#include <boost/test/unit_test.hpp>
#include <cmath> // float comparison
#include <limits>
#include <string>
#include <vector>
#include <algorithm> // std::max
#include <gudhi/kernel.h>
#include <gudhi/distance_functions.h>
#include <gudhi/reader_utils.h>
BOOST_AUTO_TEST_CASE(check_PSS) {
std::vector< std::pair<double, double> > v1, v2;
v1.emplace_back(std::pair<double,double>(0,1));
v2.emplace_back(std::pair<double,double>(0,2));
BOOST_CHECK(std::abs(Gudhi::kernel::pssk(v1,v2,1) - Gudhi::kernel::approx_pssk(v1,v2,1)) <= 1e-1);
}
BOOST_AUTO_TEST_CASE(check_PWG) {
std::vector< std::pair<double, double> > v1, v2;
v1.emplace_back(std::pair<double,double>(0,1));
v2.emplace_back(std::pair<double,double>(0,2));
BOOST_CHECK(std::abs(Gudhi::kernel::lpwgk(v1,v2,1) - Gudhi::kernel::approx_lpwgk(v1,v2,1)) <= 1e-1);
BOOST_CHECK(std::abs(Gudhi::kernel::gpwgk(v1,v2,1,1) - Gudhi::kernel::approx_gpwgk(v1,v2,1,1)) <= 1e-1);
}
BOOST_AUTO_TEST_CASE(check_SW) {
std::vector< std::pair<double, double> > v1, v2;
v2.emplace_back(std::pair<double,double>(0,2));
BOOST_CHECK(std::abs(Gudhi::kernel::sw(v1,v2) - Gudhi::kernel::approx_sw(v1,v2)) <= 1e-3);
BOOST_CHECK(std::abs(Gudhi::kernel::sw(v1,v2) - 2*std::sqrt(2)/3.1415) <= 1e-3);
}
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