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68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2010 Jitse Niesen <jitse@maths.leeds.ac.uk>
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//
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// Eigen is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 3 of the License, or (at your option) any later version.
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//
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// Alternatively, you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of
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// the License, or (at your option) any later version.
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//
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// Eigen is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License or the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License and a copy of the GNU General Public License along with
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// Eigen. If not, see <http://www.gnu.org/licenses/>.
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#include "main.h"
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#include <Eigen/Array>
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template<typename MatrixType>
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bool equalsIdentity(const MatrixType& A)
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{
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typedef typename MatrixType::Scalar Scalar;
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Scalar zero = static_cast<Scalar>(0);
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bool offDiagOK = true;
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for (int i = 0; i < A.rows(); ++i) {
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for (int j = i+1; j < A.cols(); ++j) {
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offDiagOK = offDiagOK && (A(i,j) == zero);
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}
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}
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for (int i = 0; i < A.rows(); ++i) {
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for (int j = 0; j < i; ++j) {
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offDiagOK = offDiagOK && (A(i,j) == zero);
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}
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}
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bool diagOK = (A.diagonal().array() == 1).all();
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return offDiagOK && diagOK;
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}
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template<typename MatrixType>
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void testMatrixType(const MatrixType& m)
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{
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const int rows = m.rows();
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const int cols = m.cols();
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MatrixType A;
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A.setIdentity(rows, cols);
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VERIFY(equalsIdentity(A));
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VERIFY(equalsIdentity(MatrixType::Identity(rows, cols)));
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}
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void test_nullary()
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{
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CALL_SUBTEST_1( testMatrixType(Matrix2d()) );
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CALL_SUBTEST_2( testMatrixType(MatrixXcf(50,50)) );
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CALL_SUBTEST_3( testMatrixType(MatrixXf(5,7)) );
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}
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