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- // This file is part of Eigen, a lightweight C++ template library
- // for linear algebra.
- //
- // Copyright (C) 2010 Benoit Jacob <jacob.benoit.1@gmail.com>
- //
- // This Source Code Form is subject to the terms of the Mozilla
- // Public License v. 2.0. If a copy of the MPL was not distributed
- // with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
- #include "main.h"
- #include <Eigen/SVD>
- template<typename MatrixType> void upperbidiag(const MatrixType& m)
- {
- const Index rows = m.rows();
- const Index cols = m.cols();
- typedef Matrix<typename MatrixType::RealScalar, MatrixType::RowsAtCompileTime, MatrixType::ColsAtCompileTime> RealMatrixType;
- typedef Matrix<typename MatrixType::Scalar, MatrixType::ColsAtCompileTime, MatrixType::RowsAtCompileTime> TransposeMatrixType;
- MatrixType a = MatrixType::Random(rows,cols);
- internal::UpperBidiagonalization<MatrixType> ubd(a);
- RealMatrixType b(rows, cols);
- b.setZero();
- b.block(0,0,cols,cols) = ubd.bidiagonal();
- MatrixType c = ubd.householderU() * b * ubd.householderV().adjoint();
- VERIFY_IS_APPROX(a,c);
- TransposeMatrixType d = ubd.householderV() * b.adjoint() * ubd.householderU().adjoint();
- VERIFY_IS_APPROX(a.adjoint(),d);
- }
- EIGEN_DECLARE_TEST(upperbidiagonalization)
- {
- for(int i = 0; i < g_repeat; i++) {
- CALL_SUBTEST_1( upperbidiag(MatrixXf(3,3)) );
- CALL_SUBTEST_2( upperbidiag(MatrixXd(17,12)) );
- CALL_SUBTEST_3( upperbidiag(MatrixXcf(20,20)) );
- CALL_SUBTEST_4( upperbidiag(Matrix<std::complex<double>,Dynamic,Dynamic,RowMajor>(16,15)) );
- CALL_SUBTEST_5( upperbidiag(Matrix<float,6,4>()) );
- CALL_SUBTEST_6( upperbidiag(Matrix<float,5,5>()) );
- CALL_SUBTEST_7( upperbidiag(Matrix<double,4,3>()) );
- }
- }
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