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Add evaluator for DynamicSparseMatrix

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Gael Guennebaud 2014-09-01 17:21:05 +02:00
parent 1c4b69c5fb
commit b3d63b4db2
1 changed files with 32 additions and 0 deletions
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32
unsupported/Eigen/src/SparseExtra/DynamicSparseMatrix.h
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@ -352,6 +352,38 @@ class DynamicSparseMatrix<Scalar,_Options,_Index>::ReverseInnerIterator : public
const Index m_outer;
};
#ifdef EIGEN_ENABLE_EVALUATORS
namespace internal {
template<typename _Scalar, int _Options, typename _Index>
struct evaluator<DynamicSparseMatrix<_Scalar,_Options,_Index> >
: evaluator_base<DynamicSparseMatrix<_Scalar,_Options,_Index> >
{
typedef _Scalar Scalar;
typedef _Index Index;
typedef DynamicSparseMatrix<_Scalar,_Options,_Index> SparseMatrixType;
typedef typename SparseMatrixType::InnerIterator InnerIterator;
typedef typename SparseMatrixType::ReverseInnerIterator ReverseInnerIterator;
enum {
CoeffReadCost = NumTraits<_Scalar>::ReadCost,
Flags = SparseMatrixType::Flags
};
evaluator() : m_matrix(0) {}
evaluator(const SparseMatrixType &mat) : m_matrix(&mat) {}
operator SparseMatrixType&() { return m_matrix->const_cast_derived(); }
operator const SparseMatrixType&() const { return *m_matrix; }
Scalar coeff(Index row, Index col) const { return m_matrix->coeff(row,col); }
const SparseMatrixType *m_matrix;
};
}
#endif
} // end namespace Eigen
#endif // EIGEN_DYNAMIC_SPARSEMATRIX_H