Optimize insertion of elements into a matrix.

diff --git a/include/deal.II/lac/sparse_matrix.h b/include/deal.II/lac/sparse_matrix.h
index 3277bf85365139cf446941714b42d4ee30fd338c..9cf52a12f26a8a5bf2fe5fa06c769f3e9ab89f32 100644 (file)
--- a/include/deal.II/lac/sparse_matrix.h
+++ b/include/deal.II/lac/sparse_matrix.h
@@ -1997,7 +1997,8 @@ SparseMatrix<number>::add(const size_type               row,
       col_indices.size(),
       col_indices.data(),
       values.data(),
-      elide_zero_values);
+      elide_zero_values,
+      std::is_sorted(col_indices.begin(), col_indices.end()));
 }