PETScWrappers::MPI::Vector::mean_value() is not implemented yet, warn about that...

git-svn-id: https://svn.dealii.org/trunk@23072 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/source/lac/petsc_vector_base.cc b/deal.II/source/lac/petsc_vector_base.cc
index 3ada9aee1d05b06980b7aff687c42a4eeb35f694..36049663f9915f5f488734a3c16bc49136460570 100644 (file)
--- a/deal.II/source/lac/petsc_vector_base.cc
+++ b/deal.II/source/lac/petsc_vector_base.cc
@@ -414,6 +414,11 @@ namespace PETScWrappers
   PetscScalar
   VectorBase::mean_value () const
   {
+#ifdef DEBUG
+    Assert(dynamic_cast<const PETScWrappers::MPI::Vector *>(this) != 0,
+    ExcMessage ("::mean_value() not implemented for MPI::Vector."));    
+#endif
+    
                                      // get a representation of the vector and
                                      // loop over all the elements
     PetscScalar *start_ptr;