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Generalize solve_sparse_through_dense_panels to handle SparseVector.

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Gael Guennebaud 2016-11-06 15:20:58 +01:00
parent f8bfe10613
commit a5c2d8a3cc
1 changed files with 15 additions and 1 deletions
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16
Eigen/src/SparseCore/SparseSolverBase.h
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@ -19,7 +19,8 @@ namespace internal {
* The rhs is decomposed into small vertical panels which are solved through dense temporaries.
*/
template<typename Decomposition, typename Rhs, typename Dest>
void solve_sparse_through_dense_panels(const Decomposition &dec, const Rhs& rhs, Dest &dest)
typename enable_if<Rhs::ColsAtCompileTime!=1 && Dest::ColsAtCompileTime!=1>::type
solve_sparse_through_dense_panels(const Decomposition &dec, const Rhs& rhs, Dest &dest)
{
EIGEN_STATIC_ASSERT((Dest::Flags&RowMajorBit)==0,THIS_METHOD_IS_ONLY_FOR_COLUMN_MAJOR_MATRICES);
typedef typename Dest::Scalar DestScalar;
@ -40,6 +41,19 @@ void solve_sparse_through_dense_panels(const Decomposition &dec, const Rhs& rhs,
}
}
// Overload for vector as rhs
template<typename Decomposition, typename Rhs, typename Dest>
typename enable_if<Rhs::ColsAtCompileTime==1 || Dest::ColsAtCompileTime==1>::type
solve_sparse_through_dense_panels(const Decomposition &dec, const Rhs& rhs, Dest &dest)
{
typedef typename Dest::Scalar DestScalar;
Index size = rhs.rows();
Eigen::Matrix<DestScalar,Dynamic,1> rhs_dense(rhs);
Eigen::Matrix<DestScalar,Dynamic,1> dest_dense(size);
dest_dense = dec.solve(rhs_dense);
dest = dest_dense.sparseView();
}
} // end namespace internal
/** \class SparseSolverBase