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/SparseCore/SparseCwiseBinaryOp.h | |
parent | dcb66d6b403ed2c4341fdb091f2ef22b73ea8b8a (diff) |
move sparse solvers from unsupported/ to main Eigen/ and remove the "not stable yet" warning
Diffstat (limited to 'Eigen/src/SparseCore/SparseCwiseBinaryOp.h')
-rw-r--r-- | Eigen/src/SparseCore/SparseCwiseBinaryOp.h | 375 |
1 files changed, 375 insertions, 0 deletions
diff --git a/Eigen/src/SparseCore/SparseCwiseBinaryOp.h b/Eigen/src/SparseCore/SparseCwiseBinaryOp.h new file mode 100644 index 000000000..cde5bbc03 --- /dev/null +++ b/Eigen/src/SparseCore/SparseCwiseBinaryOp.h @@ -0,0 +1,375 @@ +// This file is part of Eigen, a lightweight C++ template library +// for linear algebra. +// +// Copyright (C) 2008 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_CWISE_BINARY_OP_H +#define EIGEN_SPARSE_CWISE_BINARY_OP_H + +// Here we have to handle 3 cases: +// 1 - sparse op dense +// 2 - dense op sparse +// 3 - sparse op sparse +// We also need to implement a 4th iterator for: +// 4 - dense op dense +// Finally, we also need to distinguish between the product and other operations : +// configuration returned mode +// 1 - sparse op dense product sparse +// generic dense +// 2 - dense op sparse product sparse +// generic dense +// 3 - sparse op sparse product sparse +// generic sparse +// 4 - dense op dense product dense +// generic dense + +namespace internal { + +template<> struct promote_storage_type<Dense,Sparse> +{ typedef Sparse ret; }; + +template<> struct promote_storage_type<Sparse,Dense> +{ typedef Sparse ret; }; + +template<typename BinaryOp, typename Lhs, typename Rhs, typename Derived, + typename _LhsStorageMode = typename traits<Lhs>::StorageKind, + typename _RhsStorageMode = typename traits<Rhs>::StorageKind> +class sparse_cwise_binary_op_inner_iterator_selector; + +} // end namespace internal + +template<typename BinaryOp, typename Lhs, typename Rhs> +class CwiseBinaryOpImpl<BinaryOp, Lhs, Rhs, Sparse> + : public SparseMatrixBase<CwiseBinaryOp<BinaryOp, Lhs, Rhs> > +{ + public: + class InnerIterator; + typedef CwiseBinaryOp<BinaryOp, Lhs, Rhs> Derived; + EIGEN_SPARSE_PUBLIC_INTERFACE(Derived) +}; + +template<typename BinaryOp, typename Lhs, typename Rhs> +class CwiseBinaryOpImpl<BinaryOp,Lhs,Rhs,Sparse>::InnerIterator + : public internal::sparse_cwise_binary_op_inner_iterator_selector<BinaryOp,Lhs,Rhs,typename CwiseBinaryOpImpl<BinaryOp,Lhs,Rhs,Sparse>::InnerIterator> +{ + public: + typedef typename Lhs::Index Index; + typedef internal::sparse_cwise_binary_op_inner_iterator_selector< + BinaryOp,Lhs,Rhs, InnerIterator> Base; + + EIGEN_STRONG_INLINE InnerIterator(const CwiseBinaryOpImpl& binOp, Index outer) + : Base(binOp.derived(),outer) + {} +}; + +/*************************************************************************** +* Implementation of inner-iterators +***************************************************************************/ + +// template<typename T> struct internal::func_is_conjunction { enum { ret = false }; }; +// template<typename T> struct internal::func_is_conjunction<internal::scalar_product_op<T> > { enum { ret = true }; }; + +// TODO generalize the internal::scalar_product_op specialization to all conjunctions if any ! + +namespace internal { + +// sparse - sparse (generic) +template<typename BinaryOp, typename Lhs, typename Rhs, typename Derived> +class sparse_cwise_binary_op_inner_iterator_selector<BinaryOp, Lhs, Rhs, Derived, Sparse, Sparse> +{ + typedef CwiseBinaryOp<BinaryOp, Lhs, Rhs> CwiseBinaryXpr; + typedef typename traits<CwiseBinaryXpr>::Scalar Scalar; + typedef typename traits<CwiseBinaryXpr>::_LhsNested _LhsNested; + typedef typename traits<CwiseBinaryXpr>::_RhsNested _RhsNested; + typedef typename _LhsNested::InnerIterator LhsIterator; + typedef typename _RhsNested::InnerIterator RhsIterator; + typedef typename Lhs::Index Index; + + public: + + EIGEN_STRONG_INLINE sparse_cwise_binary_op_inner_iterator_selector(const CwiseBinaryXpr& xpr, Index outer) + : m_lhsIter(xpr.lhs(),outer), m_rhsIter(xpr.rhs(),outer), m_functor(xpr.functor()) + { + this->operator++(); + } + + EIGEN_STRONG_INLINE Derived& operator++() + { + if (m_lhsIter && m_rhsIter && (m_lhsIter.index() == m_rhsIter.index())) + { + m_id = m_lhsIter.index(); + m_value = m_functor(m_lhsIter.value(), m_rhsIter.value()); + ++m_lhsIter; + ++m_rhsIter; + } + else if (m_lhsIter && (!m_rhsIter || (m_lhsIter.index() < m_rhsIter.index()))) + { + m_id = m_lhsIter.index(); + m_value = m_functor(m_lhsIter.value(), Scalar(0)); + ++m_lhsIter; + } + else if (m_rhsIter && (!m_lhsIter || (m_lhsIter.index() > m_rhsIter.index()))) + { + m_id = m_rhsIter.index(); + m_value = m_functor(Scalar(0), m_rhsIter.value()); + ++m_rhsIter; + } + else + { + m_value = 0; // this is to avoid a compilation warning + m_id = -1; + } + return *static_cast<Derived*>(this); + } + + EIGEN_STRONG_INLINE Scalar value() const { return m_value; } + + EIGEN_STRONG_INLINE Index index() const { return m_id; } + EIGEN_STRONG_INLINE Index row() const { return Lhs::IsRowMajor ? m_lhsIter.row() : index(); } + EIGEN_STRONG_INLINE Index col() const { return Lhs::IsRowMajor ? index() : m_lhsIter.col(); } + + EIGEN_STRONG_INLINE operator bool() const { return m_id>=0; } + + protected: + LhsIterator m_lhsIter; + RhsIterator m_rhsIter; + const BinaryOp& m_functor; + Scalar m_value; + Index m_id; +}; + +// sparse - sparse (product) +template<typename T, typename Lhs, typename Rhs, typename Derived> +class sparse_cwise_binary_op_inner_iterator_selector<scalar_product_op<T>, Lhs, Rhs, Derived, Sparse, Sparse> +{ + typedef scalar_product_op<T> BinaryFunc; + typedef CwiseBinaryOp<BinaryFunc, Lhs, Rhs> CwiseBinaryXpr; + typedef typename CwiseBinaryXpr::Scalar Scalar; + typedef typename traits<CwiseBinaryXpr>::_LhsNested _LhsNested; + typedef typename _LhsNested::InnerIterator LhsIterator; + typedef typename traits<CwiseBinaryXpr>::_RhsNested _RhsNested; + typedef typename _RhsNested::InnerIterator RhsIterator; + typedef typename Lhs::Index Index; + public: + + EIGEN_STRONG_INLINE sparse_cwise_binary_op_inner_iterator_selector(const CwiseBinaryXpr& xpr, Index outer) + : m_lhsIter(xpr.lhs(),outer), m_rhsIter(xpr.rhs(),outer), m_functor(xpr.functor()) + { + while (m_lhsIter && m_rhsIter && (m_lhsIter.index() != m_rhsIter.index())) + { + if (m_lhsIter.index() < m_rhsIter.index()) + ++m_lhsIter; + else + ++m_rhsIter; + } + } + + EIGEN_STRONG_INLINE Derived& operator++() + { + ++m_lhsIter; + ++m_rhsIter; + while (m_lhsIter && m_rhsIter && (m_lhsIter.index() != m_rhsIter.index())) + { + if (m_lhsIter.index() < m_rhsIter.index()) + ++m_lhsIter; + else + ++m_rhsIter; + } + return *static_cast<Derived*>(this); + } + + EIGEN_STRONG_INLINE Scalar value() const { return m_functor(m_lhsIter.value(), m_rhsIter.value()); } + + EIGEN_STRONG_INLINE Index index() const { return m_lhsIter.index(); } + EIGEN_STRONG_INLINE Index row() const { return m_lhsIter.row(); } + EIGEN_STRONG_INLINE Index col() const { return m_lhsIter.col(); } + + EIGEN_STRONG_INLINE operator bool() const { return (m_lhsIter && m_rhsIter); } + + protected: + LhsIterator m_lhsIter; + RhsIterator m_rhsIter; + const BinaryFunc& m_functor; +}; + +// sparse - dense (product) +template<typename T, typename Lhs, typename Rhs, typename Derived> +class sparse_cwise_binary_op_inner_iterator_selector<scalar_product_op<T>, Lhs, Rhs, Derived, Sparse, Dense> +{ + typedef scalar_product_op<T> BinaryFunc; + typedef CwiseBinaryOp<BinaryFunc, Lhs, Rhs> CwiseBinaryXpr; + typedef typename CwiseBinaryXpr::Scalar Scalar; + typedef typename traits<CwiseBinaryXpr>::_LhsNested _LhsNested; + typedef typename traits<CwiseBinaryXpr>::RhsNested RhsNested; + typedef typename _LhsNested::InnerIterator LhsIterator; + typedef typename Lhs::Index Index; + enum { IsRowMajor = (int(Lhs::Flags)&RowMajorBit)==RowMajorBit }; + public: + + EIGEN_STRONG_INLINE sparse_cwise_binary_op_inner_iterator_selector(const CwiseBinaryXpr& xpr, Index outer) + : m_rhs(xpr.rhs()), m_lhsIter(xpr.lhs(),outer), m_functor(xpr.functor()), m_outer(outer) + {} + + EIGEN_STRONG_INLINE Derived& operator++() + { + ++m_lhsIter; + return *static_cast<Derived*>(this); + } + + EIGEN_STRONG_INLINE Scalar value() const + { return m_functor(m_lhsIter.value(), + m_rhs.coeff(IsRowMajor?m_outer:m_lhsIter.index(),IsRowMajor?m_lhsIter.index():m_outer)); } + + EIGEN_STRONG_INLINE Index index() const { return m_lhsIter.index(); } + EIGEN_STRONG_INLINE Index row() const { return m_lhsIter.row(); } + EIGEN_STRONG_INLINE Index col() const { return m_lhsIter.col(); } + + EIGEN_STRONG_INLINE operator bool() const { return m_lhsIter; } + + protected: + const RhsNested m_rhs; + LhsIterator m_lhsIter; + const BinaryFunc m_functor; + const Index m_outer; +}; + +// sparse - dense (product) +template<typename T, typename Lhs, typename Rhs, typename Derived> +class sparse_cwise_binary_op_inner_iterator_selector<scalar_product_op<T>, Lhs, Rhs, Derived, Dense, Sparse> +{ + typedef scalar_product_op<T> BinaryFunc; + typedef CwiseBinaryOp<BinaryFunc, Lhs, Rhs> CwiseBinaryXpr; + typedef typename CwiseBinaryXpr::Scalar Scalar; + typedef typename traits<CwiseBinaryXpr>::_RhsNested _RhsNested; + typedef typename _RhsNested::InnerIterator RhsIterator; + typedef typename Lhs::Index Index; + + enum { IsRowMajor = (int(Rhs::Flags)&RowMajorBit)==RowMajorBit }; + public: + + EIGEN_STRONG_INLINE sparse_cwise_binary_op_inner_iterator_selector(const CwiseBinaryXpr& xpr, Index outer) + : m_xpr(xpr), m_rhsIter(xpr.rhs(),outer), m_functor(xpr.functor()), m_outer(outer) + {} + + EIGEN_STRONG_INLINE Derived& operator++() + { + ++m_rhsIter; + return *static_cast<Derived*>(this); + } + + EIGEN_STRONG_INLINE Scalar value() const + { return m_functor(m_xpr.lhs().coeff(IsRowMajor?m_outer:m_rhsIter.index(),IsRowMajor?m_rhsIter.index():m_outer), m_rhsIter.value()); } + + EIGEN_STRONG_INLINE Index index() const { return m_rhsIter.index(); } + EIGEN_STRONG_INLINE Index row() const { return m_rhsIter.row(); } + EIGEN_STRONG_INLINE Index col() const { return m_rhsIter.col(); } + + EIGEN_STRONG_INLINE operator bool() const { return m_rhsIter; } + + protected: + const CwiseBinaryXpr& m_xpr; + RhsIterator m_rhsIter; + const BinaryFunc& m_functor; + const Index m_outer; +}; + +} // end namespace internal + +/*************************************************************************** +* Implementation of SparseMatrixBase and SparseCwise functions/operators +***************************************************************************/ + +// template<typename Derived> +// template<typename OtherDerived> +// EIGEN_STRONG_INLINE const CwiseBinaryOp<internal::scalar_difference_op<typename internal::traits<Derived>::Scalar>, +// Derived, OtherDerived> +// SparseMatrixBase<Derived>::operator-(const SparseMatrixBase<OtherDerived> &other) const +// { +// return CwiseBinaryOp<internal::scalar_difference_op<Scalar>, +// Derived, OtherDerived>(derived(), other.derived()); +// } + +template<typename Derived> +template<typename OtherDerived> +EIGEN_STRONG_INLINE Derived & +SparseMatrixBase<Derived>::operator-=(const SparseMatrixBase<OtherDerived> &other) +{ + return *this = derived() - other.derived(); +} + +// template<typename Derived> +// template<typename OtherDerived> +// EIGEN_STRONG_INLINE const CwiseBinaryOp<internal::scalar_sum_op<typename internal::traits<Derived>::Scalar>, Derived, OtherDerived> +// SparseMatrixBase<Derived>::operator+(const SparseMatrixBase<OtherDerived> &other) const +// { +// return CwiseBinaryOp<internal::scalar_sum_op<Scalar>, Derived, OtherDerived>(derived(), other.derived()); +// } + +template<typename Derived> +template<typename OtherDerived> +EIGEN_STRONG_INLINE Derived & +SparseMatrixBase<Derived>::operator+=(const SparseMatrixBase<OtherDerived>& other) +{ + return *this = derived() + other.derived(); +} + +// template<typename ExpressionType> +// template<typename OtherDerived> +// EIGEN_STRONG_INLINE const EIGEN_SPARSE_CWISE_PRODUCT_RETURN_TYPE +// SparseCwise<ExpressionType>::operator*(const SparseMatrixBase<OtherDerived> &other) const +// { +// return EIGEN_SPARSE_CWISE_PRODUCT_RETURN_TYPE(_expression(), other.derived()); +// } + +template<typename Derived> +template<typename OtherDerived> +EIGEN_STRONG_INLINE const EIGEN_SPARSE_CWISE_PRODUCT_RETURN_TYPE +SparseMatrixBase<Derived>::cwiseProduct(const MatrixBase<OtherDerived> &other) const +{ + return EIGEN_SPARSE_CWISE_PRODUCT_RETURN_TYPE(derived(), other.derived()); +} + +// template<typename ExpressionType> +// template<typename OtherDerived> +// EIGEN_STRONG_INLINE const EIGEN_SPARSE_CWISE_BINOP_RETURN_TYPE(internal::scalar_quotient_op) +// SparseCwise<ExpressionType>::operator/(const SparseMatrixBase<OtherDerived> &other) const +// { +// return EIGEN_SPARSE_CWISE_BINOP_RETURN_TYPE(internal::scalar_quotient_op)(_expression(), other.derived()); +// } +// +// template<typename ExpressionType> +// template<typename OtherDerived> +// EIGEN_STRONG_INLINE const EIGEN_SPARSE_CWISE_BINOP_RETURN_TYPE(internal::scalar_quotient_op) +// SparseCwise<ExpressionType>::operator/(const MatrixBase<OtherDerived> &other) const +// { +// return EIGEN_SPARSE_CWISE_BINOP_RETURN_TYPE(internal::scalar_quotient_op)(_expression(), other.derived()); +// } + +// template<typename ExpressionType> +// template<typename OtherDerived> +// inline ExpressionType& SparseCwise<ExpressionType>::operator*=(const SparseMatrixBase<OtherDerived> &other) +// { +// return m_matrix.const_cast_derived() = _expression() * other.derived(); +// } + + +#endif // EIGEN_SPARSE_CWISE_BINARY_OP_H |