]> https://gitweb.dealii.org/ - dealii.git/commitdiff
Small doc update.
authorWolfgang Bangerth <bangerth@math.tamu.edu>
Fri, 9 Mar 2001 12:37:22 +0000 (12:37 +0000)
committerWolfgang Bangerth <bangerth@math.tamu.edu>
Fri, 9 Mar 2001 12:37:22 +0000 (12:37 +0000)
git-svn-id: https://svn.dealii.org/trunk@4177 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/deal.II/source/fe/fe_system.cc

index 3de4491046e50278506c3bcfe0c7767ca0d5da03..dc5ccb59cf8e191b38b2395e3ab563084ffb2a8a 100644 (file)
@@ -253,8 +253,19 @@ FESystem<dim>::update_each (const UpdateFlags flags) const
                                   // that are necessary
   for (unsigned int base_no=0; base_no<n_base_elements(); ++base_no)
     out |= base_element(base_no).update_each(flags);
+
+                                  // second derivatives are handled
+                                  // by the top-level finite element,
+                                  // rather than by the base elements
+                                  // since it is generated by finite
+                                  // differencing. if second
+                                  // derivatives are requested, we
+                                  // therefore have to set the
+                                  // respective flag since the base
+                                  // elements don't have them
   if (flags & update_second_derivatives)
     out |= update_second_derivatives;
+  
   return out;
 }
 

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