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Diffstat (limited to 'extern/Eigen2/Eigen/src/Sparse/SparseTranspose.h')
-rw-r--r-- | extern/Eigen2/Eigen/src/Sparse/SparseTranspose.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/extern/Eigen2/Eigen/src/Sparse/SparseTranspose.h b/extern/Eigen2/Eigen/src/Sparse/SparseTranspose.h new file mode 100644 index 00000000000..89a14d70707 --- /dev/null +++ b/extern/Eigen2/Eigen/src/Sparse/SparseTranspose.h @@ -0,0 +1,85 @@ +// 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/>. + +#ifndef EIGEN_SPARSETRANSPOSE_H +#define EIGEN_SPARSETRANSPOSE_H + +template<typename MatrixType> +struct ei_traits<SparseTranspose<MatrixType> > : ei_traits<Transpose<MatrixType> > +{}; + +template<typename MatrixType> class SparseTranspose + : public SparseMatrixBase<SparseTranspose<MatrixType> > +{ + public: + + EIGEN_GENERIC_PUBLIC_INTERFACE(SparseTranspose) + + class InnerIterator; + class ReverseInnerIterator; + + inline SparseTranspose(const MatrixType& matrix) : m_matrix(matrix) {} + + //EIGEN_INHERIT_ASSIGNMENT_OPERATORS(SparseTranspose) + + inline int rows() const { return m_matrix.cols(); } + inline int cols() const { return m_matrix.rows(); } + inline int nonZeros() const { return m_matrix.nonZeros(); } + + // FIXME should be keep them ? + inline Scalar& coeffRef(int row, int col) + { return m_matrix.const_cast_derived().coeffRef(col, row); } + + inline const Scalar coeff(int row, int col) const + { return m_matrix.coeff(col, row); } + + inline const Scalar coeff(int index) const + { return m_matrix.coeff(index); } + + inline Scalar& coeffRef(int index) + { return m_matrix.const_cast_derived().coeffRef(index); } + + protected: + const typename MatrixType::Nested m_matrix; +}; + +template<typename MatrixType> class SparseTranspose<MatrixType>::InnerIterator : public MatrixType::InnerIterator +{ + public: + + EIGEN_STRONG_INLINE InnerIterator(const SparseTranspose& trans, int outer) + : MatrixType::InnerIterator(trans.m_matrix, outer) + {} +}; + +template<typename MatrixType> class SparseTranspose<MatrixType>::ReverseInnerIterator : public MatrixType::ReverseInnerIterator +{ + public: + + EIGEN_STRONG_INLINE ReverseInnerIterator(const SparseTranspose& xpr, int outer) + : MatrixType::ReverseInnerIterator(xpr.m_matrix, outer) + {} +}; + +#endif // EIGEN_SPARSETRANSPOSE_H |