64 lines
2.4 KiB
C
64 lines
2.4 KiB
C
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// This file is part of Eigen, a lightweight C++ template library
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// for linear algebra.
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//
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// Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud@inria.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla
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// Public License v. 2.0. If a copy of the MPL was not distributed
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// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef EIGEN_SPARSETRANSPOSE_H
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#define EIGEN_SPARSETRANSPOSE_H
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namespace Eigen {
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template<typename MatrixType> class TransposeImpl<MatrixType,Sparse>
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: public SparseMatrixBase<Transpose<MatrixType> >
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{
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typedef typename internal::remove_all<typename MatrixType::Nested>::type _MatrixTypeNested;
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public:
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EIGEN_SPARSE_PUBLIC_INTERFACE(Transpose<MatrixType> )
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class InnerIterator;
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class ReverseInnerIterator;
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inline Index nonZeros() const { return derived().nestedExpression().nonZeros(); }
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};
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// NOTE: VC10 and VC11 trigger an ICE if don't put typename TransposeImpl<MatrixType,Sparse>:: in front of Index,
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// a typedef typename TransposeImpl<MatrixType,Sparse>::Index Index;
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// does not fix the issue.
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// An alternative is to define the nested class in the parent class itself.
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template<typename MatrixType> class TransposeImpl<MatrixType,Sparse>::InnerIterator
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: public _MatrixTypeNested::InnerIterator
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{
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typedef typename _MatrixTypeNested::InnerIterator Base;
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typedef typename TransposeImpl::Index Index;
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public:
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EIGEN_STRONG_INLINE InnerIterator(const TransposeImpl& trans, typename TransposeImpl<MatrixType,Sparse>::Index outer)
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: Base(trans.derived().nestedExpression(), outer)
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{}
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typename TransposeImpl<MatrixType,Sparse>::Index row() const { return Base::col(); }
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typename TransposeImpl<MatrixType,Sparse>::Index col() const { return Base::row(); }
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};
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template<typename MatrixType> class TransposeImpl<MatrixType,Sparse>::ReverseInnerIterator
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: public _MatrixTypeNested::ReverseInnerIterator
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{
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typedef typename _MatrixTypeNested::ReverseInnerIterator Base;
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typedef typename TransposeImpl::Index Index;
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public:
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EIGEN_STRONG_INLINE ReverseInnerIterator(const TransposeImpl& xpr, typename TransposeImpl<MatrixType,Sparse>::Index outer)
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: Base(xpr.derived().nestedExpression(), outer)
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{}
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typename TransposeImpl<MatrixType,Sparse>::Index row() const { return Base::col(); }
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typename TransposeImpl<MatrixType,Sparse>::Index col() const { return Base::row(); }
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};
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} // end namespace Eigen
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#endif // EIGEN_SPARSETRANSPOSE_H
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