diff options
author | Gael Guennebaud <g.gael@free.fr> | 2011-11-12 14:11:27 +0100 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2011-11-12 14:11:27 +0100 |
commit | 53fa8517245e0136c83b77526b05ce67de232a56 (patch) | |
tree | 99dd17062c742eabfc3626a04c38fd6f72e43bc4 /Eigen/src/misc/SparseSolve.h | |
parent | dcb66d6b403ed2c4341fdb091f2ef22b73ea8b8a (diff) |
move sparse solvers from unsupported/ to main Eigen/ and remove the "not stable yet" warning
Diffstat (limited to 'Eigen/src/misc/SparseSolve.h')
-rw-r--r-- | Eigen/src/misc/SparseSolve.h | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/Eigen/src/misc/SparseSolve.h b/Eigen/src/misc/SparseSolve.h new file mode 100644 index 000000000..5b6c859ae --- /dev/null +++ b/Eigen/src/misc/SparseSolve.h @@ -0,0 +1,122 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2010 Gael Guennebaud <gael.guennebaud@inria.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_SOLVE_H +#define EIGEN_SPARSE_SOLVE_H + +namespace internal { + +template<typename _DecompositionType, typename Rhs> struct sparse_solve_retval_base; +template<typename _DecompositionType, typename Rhs> struct sparse_solve_retval; + +template<typename DecompositionType, typename Rhs> +struct traits<sparse_solve_retval_base<DecompositionType, Rhs> > +{ + typedef typename DecompositionType::MatrixType MatrixType; + typedef SparseMatrix<typename Rhs::Scalar, Rhs::Options, typename Rhs::Index> ReturnType; +}; + +template<typename _DecompositionType, typename Rhs> struct sparse_solve_retval_base + : public ReturnByValue<sparse_solve_retval_base<_DecompositionType, Rhs> > +{ + typedef typename remove_all<typename Rhs::Nested>::type RhsNestedCleaned; + typedef _DecompositionType DecompositionType; + typedef ReturnByValue<sparse_solve_retval_base> Base; + typedef typename Base::Index Index; + + sparse_solve_retval_base(const DecompositionType& dec, const Rhs& rhs) + : m_dec(dec), m_rhs(rhs) + {} + + inline Index rows() const { return m_dec.cols(); } + inline Index cols() const { return m_rhs.cols(); } + inline const DecompositionType& dec() const { return m_dec; } + inline const RhsNestedCleaned& rhs() const { return m_rhs; } + + template<typename Dest> inline void evalTo(Dest& dst) const + { + static_cast<const sparse_solve_retval<DecompositionType,Rhs>*>(this)->evalTo(dst); + } + + protected: + const DecompositionType& m_dec; + const typename Rhs::Nested m_rhs; +}; + +#define EIGEN_MAKE_SPARSE_SOLVE_HELPERS(DecompositionType,Rhs) \ + typedef typename DecompositionType::MatrixType MatrixType; \ + typedef typename MatrixType::Scalar Scalar; \ + typedef typename MatrixType::RealScalar RealScalar; \ + typedef typename MatrixType::Index Index; \ + typedef Eigen::internal::sparse_solve_retval_base<DecompositionType,Rhs> Base; \ + using Base::dec; \ + using Base::rhs; \ + using Base::rows; \ + using Base::cols; \ + sparse_solve_retval(const DecompositionType& dec, const Rhs& rhs) \ + : Base(dec, rhs) {} + + + +template<typename DecompositionType, typename Rhs, typename Guess> struct solve_retval_with_guess; + +template<typename DecompositionType, typename Rhs, typename Guess> +struct traits<solve_retval_with_guess<DecompositionType, Rhs, Guess> > +{ + typedef typename DecompositionType::MatrixType MatrixType; + typedef Matrix<typename Rhs::Scalar, + MatrixType::ColsAtCompileTime, + Rhs::ColsAtCompileTime, + Rhs::PlainObject::Options, + MatrixType::MaxColsAtCompileTime, + Rhs::MaxColsAtCompileTime> ReturnType; +}; + +template<typename DecompositionType, typename Rhs, typename Guess> struct solve_retval_with_guess + : public ReturnByValue<solve_retval_with_guess<DecompositionType, Rhs, Guess> > +{ + typedef typename DecompositionType::Index Index; + + solve_retval_with_guess(const DecompositionType& dec, const Rhs& rhs, const Guess& guess) + : m_dec(dec), m_rhs(rhs), m_guess(guess) + {} + + inline Index rows() const { return m_dec.cols(); } + inline Index cols() const { return m_rhs.cols(); } + + template<typename Dest> inline void evalTo(Dest& dst) const + { + dst = m_guess; + m_dec._solveWithGuess(m_rhs,dst); + } + + protected: + const DecompositionType& m_dec; + const typename Rhs::Nested m_rhs; + const typename Guess::Nested m_guess; +}; + +} // namepsace internal + +#endif // EIGEN_SPARSE_SOLVE_H |