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add mixed sparse-dense outer product

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This commit is contained in:
Gael Guennebaud
2010-06-25 11:36:38 +02:00
parent 1927b4dff5
commit e313826890
4 changed files with 129 additions and 7 deletions
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116
Eigen/src/Sparse/SparseDenseProduct.h
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@@ -25,6 +25,118 @@
#ifndef EIGEN_SPARSEDENSEPRODUCT_H
#define EIGEN_SPARSEDENSEPRODUCT_H
template<typename Lhs, typename Rhs, int InnerSize> struct SparseDenseProductReturnType
{
typedef SparseTimeDenseProduct<Lhs,Rhs> Type;
};
template<typename Lhs, typename Rhs> struct SparseDenseProductReturnType<Lhs,Rhs,1>
{
typedef SparseDenseOuterProduct<Lhs,Rhs,false> Type;
};
template<typename Lhs, typename Rhs, int InnerSize> struct DenseSparseProductReturnType
{
typedef DenseTimeSparseProduct<Lhs,Rhs> Type;
};
template<typename Lhs, typename Rhs> struct DenseSparseProductReturnType<Lhs,Rhs,1>
{
typedef SparseDenseOuterProduct<Rhs,Lhs,true> Type;
};
template<typename Lhs, typename Rhs, bool Tr>
struct ei_traits<SparseDenseOuterProduct<Lhs,Rhs,Tr> >
{
typedef Sparse StorageKind;
typedef typename ei_scalar_product_traits<typename ei_traits<Lhs>::Scalar,
typename ei_traits<Rhs>::Scalar>::ReturnType Scalar;
typedef typename Lhs::Index Index;
typedef typename Lhs::Nested LhsNested;
typedef typename Rhs::Nested RhsNested;
typedef typename ei_cleantype<LhsNested>::type _LhsNested;
typedef typename ei_cleantype<RhsNested>::type _RhsNested;
enum {
LhsCoeffReadCost = ei_traits<_LhsNested>::CoeffReadCost,
RhsCoeffReadCost = ei_traits<_RhsNested>::CoeffReadCost,
RowsAtCompileTime = Tr ? int(ei_traits<Rhs>::RowsAtCompileTime) : int(ei_traits<Lhs>::RowsAtCompileTime),
ColsAtCompileTime = Tr ? int(ei_traits<Lhs>::ColsAtCompileTime) : int(ei_traits<Rhs>::ColsAtCompileTime),
MaxRowsAtCompileTime = Tr ? int(ei_traits<Rhs>::MaxRowsAtCompileTime) : int(ei_traits<Lhs>::MaxRowsAtCompileTime),
MaxColsAtCompileTime = Tr ? int(ei_traits<Lhs>::MaxColsAtCompileTime) : int(ei_traits<Rhs>::MaxColsAtCompileTime),
Flags = Tr ? RowMajorBit : 0,
CoeffReadCost = LhsCoeffReadCost + RhsCoeffReadCost + NumTraits<Scalar>::MulCost
};
};
template<typename Lhs, typename Rhs, bool Tr>
class SparseDenseOuterProduct
: public SparseMatrixBase<SparseDenseOuterProduct<Lhs,Rhs,Tr> >
{
public:
typedef SparseMatrixBase<SparseDenseOuterProduct> Base;
EIGEN_DENSE_PUBLIC_INTERFACE(SparseDenseOuterProduct)
typedef ei_traits<SparseDenseOuterProduct> Traits;
private:
typedef typename Traits::LhsNested LhsNested;
typedef typename Traits::RhsNested RhsNested;
typedef typename Traits::_LhsNested _LhsNested;
typedef typename Traits::_RhsNested _RhsNested;
public:
class InnerIterator;
EIGEN_STRONG_INLINE SparseDenseOuterProduct(const Lhs& lhs, const Rhs& rhs)
: m_lhs(lhs), m_rhs(rhs)
{
EIGEN_STATIC_ASSERT(!Tr,YOU_MADE_A_PROGRAMMING_MISTAKE);
}
EIGEN_STRONG_INLINE SparseDenseOuterProduct(const Rhs& rhs, const Lhs& lhs)
: m_lhs(lhs), m_rhs(rhs)
{
EIGEN_STATIC_ASSERT(Tr,YOU_MADE_A_PROGRAMMING_MISTAKE);
}
EIGEN_STRONG_INLINE Index rows() const { return Tr ? m_rhs.rows() : m_lhs.rows(); }
EIGEN_STRONG_INLINE Index cols() const { return Tr ? m_lhs.cols() : m_rhs.cols(); }
EIGEN_STRONG_INLINE const _LhsNested& lhs() const { return m_lhs; }
EIGEN_STRONG_INLINE const _RhsNested& rhs() const { return m_rhs; }
protected:
LhsNested m_lhs;
RhsNested m_rhs;
};
template<typename Lhs, typename Rhs, bool Transpose>
class SparseDenseOuterProduct<Lhs,Rhs,Transpose>::InnerIterator : public _LhsNested::InnerIterator
{
typedef typename _LhsNested::InnerIterator Base;
public:
EIGEN_STRONG_INLINE InnerIterator(const SparseDenseOuterProduct& prod, Index outer)
: Base(prod.lhs(), 0), m_outer(outer), m_factor(prod.rhs().coeff(outer))
{
}
inline Index outer() const { return m_outer; }
inline Index row() const { return Transpose ? Base::row() : m_outer; }
inline Index col() const { return Transpose ? m_outer : Base::row(); }
inline Scalar value() const { return Base::value() * m_factor; }
protected:
int m_outer;
Scalar m_factor;
};
template<typename Lhs, typename Rhs>
struct ei_traits<SparseTimeDenseProduct<Lhs,Rhs> >
: ei_traits<ProductBase<SparseTimeDenseProduct<Lhs,Rhs>, Lhs, Rhs> >
@@ -102,10 +214,10 @@ class DenseTimeSparseProduct
// sparse * dense
template<typename Derived>
template<typename OtherDerived>
inline const SparseTimeDenseProduct<Derived,OtherDerived>
inline const typename SparseDenseProductReturnType<Derived,OtherDerived>::Type
SparseMatrixBase<Derived>::operator*(const MatrixBase<OtherDerived> &other) const
{
return SparseTimeDenseProduct<Derived,OtherDerived>(derived(), other.derived());
return typename SparseDenseProductReturnType<Derived,OtherDerived>::Type(derived(), other.derived());
}
#endif // EIGEN_SPARSEDENSEPRODUCT_H