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Re-enable products with triangular views of sparse matrices: we simply have to treat them as a sparse matrix.

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This commit is contained in:
Gael Guennebaud
2014-10-06 16:11:26 +02:00
parent 893bfcf95f
commit d44d432baa
5 changed files with 49 additions and 8 deletions
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2
Eigen/src/SparseCore/ConservativeSparseSparseProduct.h
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@@ -141,6 +141,8 @@ struct conservative_sparse_sparse_product_selector<Lhs,Rhs,ResultType,ColMajor,C
typedef SparseMatrix<typename ResultType::Scalar,ColMajor,typename ResultType::Index> ColMajorMatrixAux;
typedef typename sparse_eval<ColMajorMatrixAux,ResultType::RowsAtCompileTime,ResultType::ColsAtCompileTime>::type ColMajorMatrix;
// If the result is tall and thin (in the extreme case a column vector)
// then it is faster to sort the coefficients inplace instead of transposing twice.
// FIXME, the following heuristic is probably not very good.
if(lhs.rows()>=rhs.cols())
{

12
Eigen/src/SparseCore/SparseDenseProduct.h
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@@ -146,6 +146,11 @@ struct generic_product_impl<Lhs, Rhs, SparseShape, DenseShape, ProductType>
}
};
template<typename Lhs, typename Rhs, int ProductType>
struct generic_product_impl<Lhs, Rhs, SparseTriangularShape, DenseShape, ProductType>
: generic_product_impl<Lhs, Rhs, SparseShape, DenseShape, ProductType>
{};
template<typename Lhs, typename Rhs, int ProductType>
struct generic_product_impl<Lhs, Rhs, DenseShape, SparseShape, ProductType>
{
@@ -158,12 +163,17 @@ struct generic_product_impl<Lhs, Rhs, DenseShape, SparseShape, ProductType>
RhsNested rhsNested(rhs);
dst.setZero();
// transpoe everything
// transpose everything
Transpose<Dest> dstT(dst);
internal::sparse_time_dense_product(rhsNested.transpose(), lhsNested.transpose(), dstT, typename Dest::Scalar(1));
}
};
template<typename Lhs, typename Rhs, int ProductType>
struct generic_product_impl<Lhs, Rhs, DenseShape, SparseTriangularShape, ProductType>
: generic_product_impl<Lhs, Rhs, DenseShape, SparseShape, ProductType>
{};
template<typename LhsT, typename RhsT, bool NeedToTranspose>
struct sparse_dense_outer_product_evaluator
{

13
Eigen/src/SparseCore/SparseProduct.h
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@@ -33,6 +33,7 @@ SparseMatrixBase<Derived>::operator*(const SparseMatrixBase<OtherDerived> &other
namespace internal {
// sparse * sparse
template<typename Lhs, typename Rhs, int ProductType>
struct generic_product_impl<Lhs, Rhs, SparseShape, SparseShape, ProductType>
{
@@ -48,6 +49,18 @@ struct generic_product_impl<Lhs, Rhs, SparseShape, SparseShape, ProductType>
}
};
// sparse * sparse-triangular
template<typename Lhs, typename Rhs, int ProductType>
struct generic_product_impl<Lhs, Rhs, SparseShape, SparseTriangularShape, ProductType>
: public generic_product_impl<Lhs, Rhs, SparseShape, SparseShape, ProductType>
{};
// sparse-triangular * sparse
template<typename Lhs, typename Rhs, int ProductType>
struct generic_product_impl<Lhs, Rhs, SparseTriangularShape, SparseShape, ProductType>
: public generic_product_impl<Lhs, Rhs, SparseShape, SparseShape, ProductType>
{};
template<typename Lhs, typename Rhs, int Options>
struct evaluator<SparseView<Product<Lhs, Rhs, Options> > >
: public evaluator<typename Product<Lhs, Rhs, DefaultProduct>::PlainObject>::type