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/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
* See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
* Author(s): Siargey Kachanovich
*
* Copyright (C) 2019 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#define BOOST_TEST_DYN_LINK
#define BOOST_TEST_MODULE "random_orthogonal_matrix_function"
#include <boost/test/unit_test.hpp>
#include <gudhi/Unitary_tests_utils.h>
#include <gudhi/Functions/random_orthogonal_matrix.h>
#include <string>
#include <random>
#include <cstdlib>
using namespace Gudhi::coxeter_triangulation;
// this test is separated as it requires CGAL
BOOST_AUTO_TEST_CASE(random_orthogonal_matrix_function) {
// random orthogonal matrix
Eigen::MatrixXd matrix = random_orthogonal_matrix(5);
Eigen::MatrixXd id_matrix = matrix.transpose() * matrix;
for (std::size_t i = 0; i < 5; ++i)
for (std::size_t j = 0; j < 5; ++j)
if (i == j)
GUDHI_TEST_FLOAT_EQUALITY_CHECK(id_matrix(i, j), 1.0, 1e-10);
else
GUDHI_TEST_FLOAT_EQUALITY_CHECK(id_matrix(i, j), 0.0, 1e-10);
}
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