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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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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())
{