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Diffstat (limited to 'test/submatrices.cpp')
-rw-r--r-- | test/submatrices.cpp | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/test/submatrices.cpp b/test/submatrices.cpp new file mode 100644 index 000000000..33d135646 --- /dev/null +++ b/test/submatrices.cpp @@ -0,0 +1,120 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. Eigen itself is part of the KDE project. +// +// Copyright (C) 2006-2007 Benoit Jacob <jacob@math.jussieu.fr> +// +// Eigen is free software; 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 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 General Public License for more +// details. +// +// You should have received a copy of the GNU General Public License along +// with Eigen; if not, write to the Free Software Foundation, Inc., 51 +// Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. +// +// As a special exception, if other files instantiate templates or use macros +// or functions from this file, or you compile this file and link it +// with other works to produce a work based on this file, this file does not +// by itself cause the resulting work to be covered by the GNU General Public +// License. This exception does not invalidate any other reasons why a work +// based on this file might be covered by the GNU General Public License. + +#include "main.h" + +namespace Eigen { + +template<typename MatrixType> void submatrices(const MatrixType& m) +{ + /* this test covers the following files: + Transpose.h Conjugate.h Dot.h + */ + + typedef typename MatrixType::Scalar Scalar; + typedef Matrix<Scalar, MatrixType::RowsAtCompileTime, 1> VectorType; + typedef Matrix<Scalar, 1, MatrixType::ColsAtCompileTime> RowVectorType; + int rows = m.rows(); + int cols = m.cols(); + + MatrixType m1 = MatrixType::random(rows, cols), + m2 = MatrixType::random(rows, cols), + m3(rows, cols), + mzero = MatrixType::zero(rows, cols), + identity = Matrix<Scalar, MatrixType::RowsAtCompileTime, MatrixType::RowsAtCompileTime> + ::identity(rows), + square = Matrix<Scalar, MatrixType::RowsAtCompileTime, MatrixType::RowsAtCompileTime> + ::random(rows, rows); + VectorType v1 = VectorType::random(rows), + v2 = VectorType::random(rows), + v3 = VectorType::random(rows), + vzero = VectorType::zero(rows); + + Scalar s1 = random<Scalar>(); + + /* this test covers the following files: + Row.h Column.h Block.h DynBlock.h Minor.h + */ + + int r1 = random<int>(0,rows-1); + int r2 = random<int>(r1,rows-1); + int c1 = random<int>(0,cols-1); + int c2 = random<int>(c1,cols-1); + + //check row() and col() + VERIFY_IS_APPROX(m1.col(c1).transpose(), m1.transpose().row(c1)); + VERIFY_IS_APPROX(square.row(r1).dot(m1.col(c1)), square.lazyProduct(m1.conjugate())(r1,c1)); + //check operator(), both constant and non-constant, on row() and col() + m1.row(r1) += s1 * m1.row(r2); + m1.col(c1) += s1 * m1.col(c2); + + //check dynBlock() + Matrix<Scalar,Dynamic,Dynamic> b1(1,1); b1(0,0) = m1(r1,c1); + RowVectorType br1(m1.dynBlock(r1,0,1,cols)); + VectorType bc1(m1.dynBlock(0,c1,rows,1)); + VERIFY_IS_APPROX(b1, m1.dynBlock(r1,c1,1,1)); + VERIFY_IS_APPROX(m1.row(r1), br1); + VERIFY_IS_APPROX(m1.col(c1), bc1); + //check operator(), both constant and non-constant, on dynBlock() + m1.dynBlock(r1,c1,r2-r1+1,c2-c1+1) = s1 * m2.dynBlock(0, 0, r2-r1+1,c2-c1+1); + m1.dynBlock(r1,c1,r2-r1+1,c2-c1+1)(r2-r1,c2-c1) = m2.dynBlock(0, 0, r2-r1+1,c2-c1+1)(0,0); + + //check minor() + if(rows > 1 && cols > 1) + { + Matrix<Scalar, Dynamic, Dynamic> mi = m1.minor(0,0).eval(); + VERIFY_IS_APPROX(mi, m1.dynBlock(1,1,rows-1,cols-1)); + mi = m1.minor(r1,c1); + VERIFY_IS_APPROX(mi.transpose(), m1.transpose().minor(c1,r1)); + //check operator(), both constant and non-constant, on minor() + m1.minor(r1,c1)(0,0) = m1.minor(0,0)(0,0); + } +} + +void EigenTest::testSubmatrices() +{ + for(int i = 0; i < m_repeat; i++) { + submatrices(Matrix<float, 1, 1>()); + submatrices(Matrix4d()); + submatrices(MatrixXcf(3, 3)); + submatrices(MatrixXi(8, 12)); + submatrices(MatrixXcd(20, 20)); + + // test block() separately as it is a template method so doesn't support + // being called as a member of a class that is itself a template parameter + // (at least as of g++ 4.2) + Matrix<float, 6, 8> m = Matrix<float, 6, 8>::random(); + float s = random<float>(); + // test block() as lvalue + m.block<2,5>(1,1) *= s; + // test operator() on block() both as constant and non-constant + m.block<2,5>(1,1)(0, 3) = m.block<2,5>(1,1)(1,2); + // check that block() and dynBlock() agree + MatrixXf b = m.block<3,2>(3,3); + VERIFY_IS_APPROX(b, m.dynBlock(3,3,3,2)); + } +} + +} // namespace Eigen |