diff options
author | Gael Guennebaud <g.gael@free.fr> | 2014-06-23 10:40:03 +0200 |
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committer | Gael Guennebaud <g.gael@free.fr> | 2014-06-23 10:40:03 +0200 |
commit | 3849cc65ee2192ddd9d63cdc2e65cb74128bcbb3 (patch) | |
tree | 562f7a7eecfad04c93e3a734804c22c087b37ac9 /Eigen/src/SparseCore/SparseTranspose.h | |
parent | ec0a8b2e6dab9af4b4fc6c91d2ab7b01e47ea5ce (diff) |
Implement binaryop and transpose evaluators for sparse matrices
Diffstat (limited to 'Eigen/src/SparseCore/SparseTranspose.h')
-rw-r--r-- | Eigen/src/SparseCore/SparseTranspose.h | 54 |
1 files changed, 53 insertions, 1 deletions
diff --git a/Eigen/src/SparseCore/SparseTranspose.h b/Eigen/src/SparseCore/SparseTranspose.h index 7c300ee8d..b20843dd3 100644 --- a/Eigen/src/SparseCore/SparseTranspose.h +++ b/Eigen/src/SparseCore/SparseTranspose.h @@ -1,7 +1,7 @@ // This file is part of Eigen, a lightweight C++ template library // for linear algebra. // -// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr> +// Copyright (C) 2008-2014 Gael Guennebaud <gael.guennebaud@inria.fr> // // This Source Code Form is subject to the terms of the Mozilla // Public License v. 2.0. If a copy of the MPL was not distributed @@ -12,6 +12,7 @@ namespace Eigen { +#ifndef EIGEN_TEST_EVALUATORS template<typename MatrixType> class TransposeImpl<MatrixType,Sparse> : public SparseMatrixBase<Transpose<MatrixType> > { @@ -58,6 +59,57 @@ template<typename MatrixType> class TransposeImpl<MatrixType,Sparse>::ReverseInn Index col() const { return Base::row(); } }; +#else // EIGEN_TEST_EVALUATORS + +namespace internal { + +template<typename ArgType> +struct unary_evaluator<Transpose<ArgType>, IteratorBased> + : public evaluator_base<Transpose<ArgType> > +{ + typedef typename evaluator<ArgType>::InnerIterator EvalIterator; + typedef typename evaluator<ArgType>::ReverseInnerIterator EvalReverseIterator; + public: + typedef Transpose<ArgType> XprType; + typedef typename XprType::Index Index; + + class InnerIterator : public EvalIterator + { + public: + EIGEN_STRONG_INLINE InnerIterator(const unary_evaluator& unaryOp, typename XprType::Index outer) + : EvalIterator(unaryOp.m_argImpl,outer) + {} + + Index row() const { return EvalIterator::col(); } + Index col() const { return EvalIterator::row(); } + }; + + class ReverseInnerIterator : public EvalReverseIterator + { + public: + EIGEN_STRONG_INLINE ReverseInnerIterator(const unary_evaluator& unaryOp, typename XprType::Index outer) + : EvalReverseIterator(unaryOp.m_argImpl,outer) + {} + + Index row() const { return EvalReverseIterator::col(); } + Index col() const { return EvalReverseIterator::row(); } + }; + + enum { + CoeffReadCost = evaluator<ArgType>::CoeffReadCost, + Flags = XprType::Flags + }; + + unary_evaluator(const XprType& op) :m_argImpl(op.nestedExpression()) {} + + protected: + typename evaluator<ArgType>::nestedType m_argImpl; +}; + +} // end namespace internal + +#endif // EIGEN_TEST_EVALUATORS + } // end namespace Eigen #endif // EIGEN_SPARSETRANSPOSE_H |