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add SparseVector::ReverseInnerIterator

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This commit is contained in:
Gael Guennebaud 2011-12-04 09:56:40 +01:00
parent 91e392a042
commit 1cdbae62db
1 changed files with 32 additions and 5 deletions
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37
Eigen/src/SparseCore/SparseVector.h
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@ -125,6 +125,7 @@ class SparseVector
public: public:
class InnerIterator; class InnerIterator;
class ReverseInnerIterator;
inline void setZero() { m_data.clear(); } inline void setZero() { m_data.clear(); }
@ -333,11 +334,6 @@ class SparseVector<Scalar,_Options,_Index>::InnerIterator
: m_data(data), m_id(0), m_end(static_cast<Index>(m_data.size())) : m_data(data), m_id(0), m_end(static_cast<Index>(m_data.size()))
{} {}
template<unsigned int Added, unsigned int Removed>
InnerIterator(const Flagged<SparseVector,Added,Removed>& vec, Index )
: m_data(vec._expression().m_data), m_id(0), m_end(m_data.size())
{}
inline InnerIterator& operator++() { m_id++; return *this; } inline InnerIterator& operator++() { m_id++; return *this; }
inline Scalar value() const { return m_data.value(m_id); } inline Scalar value() const { return m_data.value(m_id); }
@ -355,4 +351,35 @@ class SparseVector<Scalar,_Options,_Index>::InnerIterator
const Index m_end; const Index m_end;
}; };
template<typename Scalar, int _Options, typename _Index>
class SparseVector<Scalar,_Options,_Index>::ReverseInnerIterator
{
public:
ReverseInnerIterator(const SparseVector& vec, Index outer=0)
: m_data(vec.m_data), m_id(static_cast<Index>(m_data.size())), m_start(0)
{
eigen_assert(outer==0);
}
ReverseInnerIterator(const internal::CompressedStorage<Scalar,Index>& data)
: m_data(data), m_id(static_cast<Index>(m_data.size())), m_start(0)
{}
inline ReverseInnerIterator& operator--() { m_id--; return *this; }
inline Scalar value() const { return m_data.value(m_id-1); }
inline Scalar& valueRef() { return const_cast<Scalar&>(m_data.value(m_id-1)); }
inline Index index() const { return m_data.index(m_id-1); }
inline Index row() const { return IsColVector ? index() : 0; }
inline Index col() const { return IsColVector ? 0 : index(); }
inline operator bool() const { return (m_id > m_start); }
protected:
const internal::CompressedStorage<Scalar,Index>& m_data;
Index m_id;
const Index m_start;
};
#endif // EIGEN_SPARSEVECTOR_H #endif // EIGEN_SPARSEVECTOR_H