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Add a plain_object_eval<> helper returning a plain object type based on evaluator's Flags,

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and base nested_eval on it.
This commit is contained in:
Gael Guennebaud
2015-10-14 10:12:58 +02:00
parent b4c79ee1d3
commit 2598f3987e
3 changed files with 30 additions and 16 deletions
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Eigen/src/SparseCore/ConservativeSparseSparseProduct.h
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@@ -138,7 +138,7 @@ struct conservative_sparse_sparse_product_selector<Lhs,Rhs,ResultType,ColMajor,C
{
typedef SparseMatrix<typename ResultType::Scalar,RowMajor,typename ResultType::StorageIndex> RowMajorMatrix;
typedef SparseMatrix<typename ResultType::Scalar,ColMajor,typename ResultType::StorageIndex> ColMajorMatrixAux;
typedef typename sparse_eval<ColMajorMatrixAux,ResultType::RowsAtCompileTime,ResultType::ColsAtCompileTime>::type ColMajorMatrix;
typedef typename sparse_eval<ColMajorMatrixAux,ResultType::RowsAtCompileTime,ResultType::ColsAtCompileTime,ColMajorMatrixAux::Flags>::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.