MappedSparseMatrix.h

// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// 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
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
#ifndef EIGEN_MAPPED_SPARSEMATRIX_H
#define EIGEN_MAPPED_SPARSEMATRIX_H
 
namespace Eigen {
 
namespace internal {
template<typename _Scalar, int _Flags, typename _StorageIndex>
struct traits<MappedSparseMatrix<_Scalar, _Flags, _StorageIndex> > : traits<SparseMatrix<_Scalar, _Flags, _StorageIndex> >
{};
} // end namespace internal
 
template<typename _Scalar, int _Flags, typename _StorageIndex>
class MappedSparseMatrix
  : public Map<SparseMatrix<_Scalar, _Flags, _StorageIndex> >
{
    typedef Map<SparseMatrix<_Scalar, _Flags, _StorageIndex> > Base;
 
  public:
    
    typedef typename Base::StorageIndex StorageIndex;
    typedef typename Base::Scalar Scalar;
 
    inline MappedSparseMatrix(Index rows, Index cols, Index nnz, StorageIndex* outerIndexPtr, StorageIndex* innerIndexPtr, Scalar* valuePtr, StorageIndex* innerNonZeroPtr = 0)
      : Base(rows, cols, nnz, outerIndexPtr, innerIndexPtr, valuePtr, innerNonZeroPtr)
    {}
 
    inline ~MappedSparseMatrix() {}
};
 
namespace internal {
 
template<typename _Scalar, int _Options, typename _StorageIndex>
struct evaluator<MappedSparseMatrix<_Scalar,_Options,_StorageIndex> >
  : evaluator<SparseCompressedBase<MappedSparseMatrix<_Scalar,_Options,_StorageIndex> > >
{
  typedef MappedSparseMatrix<_Scalar,_Options,_StorageIndex> XprType;
  typedef evaluator<SparseCompressedBase<XprType> > Base;
  
  evaluator() : Base() {}
  explicit evaluator(const XprType &mat) : Base(mat) {}
};
 
}
 
} // end namespace Eigen
 
#endif // EIGEN_MAPPED_SPARSEMATRIX_H