diff options
author | Gael Guennebaud <g.gael@free.fr> | 2008-04-25 23:13:20 +0000 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2008-04-25 23:13:20 +0000 |
commit | 173e582e3ce7a7822cb40dbfe8855e642a5fc9f2 (patch) | |
tree | 9aa4089085df25c471a485d02dd894f0d7c429db /test | |
parent | 6f2c72fb537c18e5b3a2ddc1f1ba2ff2f4a38785 (diff) |
added a tough test to check the determinant that currently fails
Diffstat (limited to 'test')
-rw-r--r-- | test/CMakeLists.txt | 1 | ||||
-rw-r--r-- | test/determinant.cpp | 71 | ||||
-rw-r--r-- | test/linearstructure.cpp | 7 | ||||
-rw-r--r-- | test/main.h | 1 | ||||
-rw-r--r-- | test/product.cpp | 7 |
5 files changed, 85 insertions, 2 deletions
diff --git a/test/CMakeLists.txt b/test/CMakeLists.txt index 22bc2d23c..4a5ca235c 100644 --- a/test/CMakeLists.txt +++ b/test/CMakeLists.txt @@ -17,6 +17,7 @@ SET(test_SRCS smallvectors.cpp map.cpp cwiseop.cpp + determinant.cpp ) QT4_AUTOMOC(${test_SRCS}) diff --git a/test/determinant.cpp b/test/determinant.cpp new file mode 100644 index 000000000..974df58ef --- /dev/null +++ b/test/determinant.cpp @@ -0,0 +1,71 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. Eigen itself is part of the KDE project. +// +// Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr> +// +// Eigen is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 3 of the License, or (at your option) any later version. +// +// Alternatively, 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 2 of +// the License, or (at your option) any later version. +// +// Eigen 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 Lesser General Public License or the +// GNU General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License and a copy of the GNU General Public License along with +// Eigen. If not, see <http://www.gnu.org/licenses/>. + +#include "main.h" + +#include <Eigen/LU> + +namespace Eigen { + +template<typename MatrixType> void nullDeterminant(const MatrixType& m) +{ + /* this test covers the following files: + Determinant.h + */ + int rows = m.rows(); + int cols = m.cols(); + + typedef typename MatrixType::Scalar Scalar; + typedef Matrix<Scalar, MatrixType::ColsAtCompileTime, MatrixType::ColsAtCompileTime> SquareMatrixType; + typedef Matrix<Scalar, MatrixType::ColsAtCompileTime, 1> VectorType; + + MatrixType d(rows, cols); + + // build a ill-conditionned matrix with a nul determinant + d.col(0).setOnes(); + d.block(0,1, rows, cols-2).setRandom(); + d.col(cols-1).setOnes(); + + for (int i=0 ; i<rows ; ++i) + d.row(i).block(0,1,1,cols-2) = d.row(i).block(0,1,1,cols-2).normalized(); + + SquareMatrixType covarianceMatrix = d.transpose() * d; + +// std::cout << covarianceMatrix << "\n" << covarianceMatrix.determinant() << "\n"; + + VERIFY_IS_APPROX(covarianceMatrix.determinant(), Scalar(0)); +} + +void EigenTest::testDeterminant() +{ + for(int i = 0; i < m_repeat; i++) { + nullDeterminant(Matrix<float, 30, 3>()); + nullDeterminant(Matrix<double, 30, 3>()); + nullDeterminant(Matrix<float, 20, 4>()); + nullDeterminant(Matrix<double, 20, 4>()); +// nullDeterminant(MatrixXd(20,4)); + } +} + +} // namespace Eigen diff --git a/test/linearstructure.cpp b/test/linearstructure.cpp index 6e1364ec4..25d0bdc2c 100644 --- a/test/linearstructure.cpp +++ b/test/linearstructure.cpp @@ -89,6 +89,12 @@ template<typename MatrixType> void linearStructure(const MatrixType& m) VERIFY_IS_APPROX((m1*s1)(r,c), (m1(r,c))*s1); if(NumTraits<Scalar>::HasFloatingPoint) VERIFY_IS_APPROX((m1/s1)(r,c), (m1(r,c))/s1); + + // use .block to disable vectorization and compare to the vectorized version + VERIFY_IS_APPROX(m1+m1.block(0,0,rows,cols), m1+m1); + VERIFY_IS_APPROX(m1.cwiseProduct(m1.block(0,0,rows,cols)), m1.cwiseProduct(m1)); + VERIFY_IS_APPROX(m1 - m1.block(0,0,rows,cols), m1 - m1); + VERIFY_IS_APPROX(m1.block(0,0,rows,cols) * s1, m1 * s1); } void EigenTest::testLinearStructure() @@ -97,6 +103,7 @@ void EigenTest::testLinearStructure() linearStructure(Matrix<float, 1, 1>()); linearStructure(Matrix4d()); linearStructure(MatrixXcf(3, 3)); + linearStructure(MatrixXf(8, 12)); linearStructure(MatrixXi(8, 12)); linearStructure(MatrixXcd(20, 20)); } diff --git a/test/main.h b/test/main.h index 67b5b456f..3aae7bc65 100644 --- a/test/main.h +++ b/test/main.h @@ -213,6 +213,7 @@ class EigenTest : public QObject void testSmallVectors(); void testMap(); void testCwiseops(); + void testDeterminant(); protected: int m_repeat; }; diff --git a/test/product.cpp b/test/product.cpp index a6b6a537d..782be8f82 100644 --- a/test/product.cpp +++ b/test/product.cpp @@ -34,6 +34,7 @@ template<typename MatrixType> void product(const MatrixType& m) typedef typename MatrixType::Scalar Scalar; typedef Matrix<Scalar, MatrixType::RowsAtCompileTime, 1> VectorType; + typedef Matrix<Scalar, MatrixType::RowsAtCompileTime, MatrixType::RowsAtCompileTime> SquareMatrixType; int rows = m.rows(); int cols = m.cols(); @@ -43,7 +44,8 @@ template<typename MatrixType> void product(const MatrixType& m) MatrixType m1 = MatrixType::random(rows, cols), m2 = MatrixType::random(rows, cols), m3(rows, cols), - mzero = MatrixType::zero(rows, cols), + mzero = MatrixType::zero(rows, cols); + SquareMatrixType identity = Matrix<Scalar, MatrixType::RowsAtCompileTime, MatrixType::RowsAtCompileTime> ::identity(rows, rows), square = Matrix<Scalar, MatrixType::RowsAtCompileTime, MatrixType::RowsAtCompileTime> @@ -95,7 +97,8 @@ void EigenTest::testProduct() product(Matrix<float, 1, 1>()); product(Matrix4d()); product(MatrixXcf(3, 3)); - product(MatrixXi(8, 12)); + product(MatrixXf(13, 25)); + product(MatrixXi(4, 4)); product(MatrixXcd(20, 20)); } |