1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2008-2009 Gael Guennebaud <gael.guennebaud (at) inria.fr> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #ifndef EIGEN_SPARSETRANSPOSE_H 11 #define EIGEN_SPARSETRANSPOSE_H 12 13 namespace Eigen { 14 15 template<typename MatrixType> class TransposeImpl<MatrixType,Sparse> 16 : public SparseMatrixBase<Transpose<MatrixType> > 17 { 18 typedef typename internal::remove_all<typename MatrixType::Nested>::type _MatrixTypeNested; 19 public: 20 21 EIGEN_SPARSE_PUBLIC_INTERFACE(Transpose<MatrixType> ) 22 23 class InnerIterator; 24 class ReverseInnerIterator; 25 26 inline Index nonZeros() const { return derived().nestedExpression().nonZeros(); } 27 }; 28 29 // NOTE: VC10 and VC11 trigger an ICE if don't put typename TransposeImpl<MatrixType,Sparse>:: in front of Index, 30 // a typedef typename TransposeImpl<MatrixType,Sparse>::Index Index; 31 // does not fix the issue. 32 // An alternative is to define the nested class in the parent class itself. 33 template<typename MatrixType> class TransposeImpl<MatrixType,Sparse>::InnerIterator 34 : public _MatrixTypeNested::InnerIterator 35 { 36 typedef typename _MatrixTypeNested::InnerIterator Base; 37 typedef typename TransposeImpl::Index Index; 38 public: 39 40 EIGEN_STRONG_INLINE InnerIterator(const TransposeImpl& trans, typename TransposeImpl<MatrixType,Sparse>::Index outer) 41 : Base(trans.derived().nestedExpression(), outer) 42 {} 43 typename TransposeImpl<MatrixType,Sparse>::Index row() const { return Base::col(); } 44 typename TransposeImpl<MatrixType,Sparse>::Index col() const { return Base::row(); } 45 }; 46 47 template<typename MatrixType> class TransposeImpl<MatrixType,Sparse>::ReverseInnerIterator 48 : public _MatrixTypeNested::ReverseInnerIterator 49 { 50 typedef typename _MatrixTypeNested::ReverseInnerIterator Base; 51 typedef typename TransposeImpl::Index Index; 52 public: 53 54 EIGEN_STRONG_INLINE ReverseInnerIterator(const TransposeImpl& xpr, typename TransposeImpl<MatrixType,Sparse>::Index outer) 55 : Base(xpr.derived().nestedExpression(), outer) 56 {} 57 typename TransposeImpl<MatrixType,Sparse>::Index row() const { return Base::col(); } 58 typename TransposeImpl<MatrixType,Sparse>::Index col() const { return Base::row(); } 59 }; 60 61 } // end namespace Eigen 62 63 #endif // EIGEN_SPARSETRANSPOSE_H 64
