Doc update.

git-svn-id: https://svn.dealii.org/trunk@3455 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/deal.II/source/dofs/dof_renumbering.cc b/deal.II/deal.II/source/dofs/dof_renumbering.cc
index d056afc75ff020b064ec8b620aed9104c74caeb8..1c1d2785195fefd02e7806867e38104153541739 100644 (file)
--- a/deal.II/deal.II/source/dofs/dof_renumbering.cc
+++ b/deal.II/deal.II/source/dofs/dof_renumbering.cc
@@ -715,7 +715,10 @@ DoFRenumbering::downstream_dg (MGDoFHandler<dim>& dof,
 }
 
 
-
+// for whatever reason, the random_shuffle function used below needs
+// lrand48 to be declared (rather than do so itself. however,
+// inclusion of <cstdlib> or <stdlib.h> does not help, so we declare
+// that function ourselves
 extern "C" long int lrand48 (void);
 
 
@@ -730,6 +733,7 @@ DoFRenumbering::random (DoFHandler<dim> &dof_handler)
 
 
 
+
 // explicit instantiations
 template
 void DoFRenumbering::Cuthill_McKee (DoFHandler<deal_II_dimension>&,