1 // This file is part of Eigen, a lightweight C++ template library
2 // for linear algebra.
3 //
4 // Copyright (C) 2008-2014 Gael Guennebaud <gael.guennebaud@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_MAPPED_SPARSEMATRIX_H
11 #define EIGEN_MAPPED_SPARSEMATRIX_H
12 
13 namespace Eigen {
14 
15 /** \deprecated Use Map<SparseMatrix<> >
16   * \class MappedSparseMatrix
17   *
18   * \brief Sparse matrix
19   *
20   * \param _Scalar the scalar type, i.e. the type of the coefficients
21   *
22   * See http://www.netlib.org/linalg/html_templates/node91.html for details on the storage scheme.
23   *
24   */
25 namespace internal {
26 template<typename _Scalar, int _Flags, typename _StorageIndex>
27 struct traits<MappedSparseMatrix<_Scalar, _Flags, _StorageIndex> > : traits<SparseMatrix<_Scalar, _Flags, _StorageIndex> >
28 {};
29 } // end namespace internal
30 
31 template<typename _Scalar, int _Flags, typename _StorageIndex>
32 class MappedSparseMatrix
33   : public Map<SparseMatrix<_Scalar, _Flags, _StorageIndex> >
34 {
35     typedef Map<SparseMatrix<_Scalar, _Flags, _StorageIndex> > Base;
36 
37   public:
38 
39     typedef typename Base::StorageIndex StorageIndex;
40     typedef typename Base::Scalar Scalar;
41 
42     inline MappedSparseMatrix(Index rows, Index cols, Index nnz, StorageIndex* outerIndexPtr, StorageIndex* innerIndexPtr, Scalar* valuePtr, StorageIndex* innerNonZeroPtr = 0)
43       : Base(rows, cols, nnz, outerIndexPtr, innerIndexPtr, valuePtr, innerNonZeroPtr)
44     {}
45 
46     /** Empty destructor */
47     inline ~MappedSparseMatrix() {}
48 };
49 
50 namespace internal {
51 
52 template<typename _Scalar, int _Options, typename _StorageIndex>
53 struct evaluator<MappedSparseMatrix<_Scalar,_Options,_StorageIndex> >
54   : evaluator<SparseCompressedBase<MappedSparseMatrix<_Scalar,_Options,_StorageIndex> > >
55 {
56   typedef MappedSparseMatrix<_Scalar,_Options,_StorageIndex> XprType;
57   typedef evaluator<SparseCompressedBase<XprType> > Base;
58 
59   evaluator() : Base() {}
60   explicit evaluator(const XprType &mat) : Base(mat) {}
61 };
62 
63 }
64 
65 } // end namespace Eigen
66 
67 #endif // EIGEN_MAPPED_SPARSEMATRIX_H
68