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Diffstat (limited to 'eigen/test/upperbidiagonalization.cpp')
-rw-r--r-- | eigen/test/upperbidiagonalization.cpp | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/eigen/test/upperbidiagonalization.cpp b/eigen/test/upperbidiagonalization.cpp new file mode 100644 index 0000000..d15bf58 --- /dev/null +++ b/eigen/test/upperbidiagonalization.cpp @@ -0,0 +1,43 @@ +// 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 typename MatrixType::Index rows = m.rows(); + const typename MatrixType::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); +} + +void 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(MatrixXcd(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>()) ); + } +} |