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sparse module: new API proposal for triangular solves and experimental

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solver support with a sparse matrix as the rhs.
This commit is contained in:
Gael Guennebaud
2009-04-05 16:30:10 +00:00
parent 5a628567b0
commit 5b1d0cebc5
13 changed files with 335 additions and 64 deletions
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60
Eigen/src/Sparse/SparseTriangular.h Normal file
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// This file is part of Eigen, a lightweight C++ template library
// for linear algebra. Eigen itself is part of the KDE project.
//
// Copyright (C) 2009 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_SPARSE_TRIANGULAR_H
#define EIGEN_SPARSE_TRIANGULAR_H
template<typename ExpressionType, int Mode> class SparseTriangular
{
public:
typedef typename ei_traits<ExpressionType>::Scalar Scalar;
typedef typename ei_meta_if<ei_must_nest_by_value<ExpressionType>::ret,
ExpressionType, const ExpressionType&>::ret ExpressionTypeNested;
typedef CwiseUnaryOp<ei_scalar_add_op<Scalar>, ExpressionType> ScalarAddReturnType;
inline SparseTriangular(const ExpressionType& matrix) : m_matrix(matrix) {}
/** \internal */
inline const ExpressionType& _expression() const { return m_matrix; }
template<typename OtherDerived>
typename ei_plain_matrix_type_column_major<OtherDerived>::type
solve(const MatrixBase<OtherDerived>& other) const;
template<typename OtherDerived> void solveInPlace(MatrixBase<OtherDerived>& other) const;
template<typename OtherDerived> void solveInPlace(SparseMatrixBase<OtherDerived>& other) const;
protected:
ExpressionTypeNested m_matrix;
};
template<typename Derived>
template<int Mode>
inline const SparseTriangular<Derived, Mode>
SparseMatrixBase<Derived>::triangular() const
{
return derived();
}
#endif // EIGEN_SPARSE_TRIANGULAR_H