Comment on `back_interpolate and interpolation_difference does not work on continuous...

git-svn-id: https://svn.dealii.org/trunk@5968 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/deal.II/include/fe/fe_tools.h b/deal.II/deal.II/include/fe/fe_tools.h
index f230232855039ba0e878b67e29bcdac76069bb6f..f01d0bb95efc0027176674cdded96af7a3642e16 100644 (file)
--- a/deal.II/deal.II/include/fe/fe_tools.h
+++ b/deal.II/deal.II/include/fe/fe_tools.h
@@ -173,6 +173,10 @@ class FETools
                                      * as if it were a subset then
                                      * @p{u1_interpolated} would be
                                      * equal to @p{u1}.
+                                     *
+                                     * Note, that this function does
+                                     * not work on continuous
+                                     * elements at hanging nodes.
                                      */
     template <int dim, typename number>
     static void back_interpolate (const DoFHandler<dim>    &dof1,
@@ -186,6 +190,10 @@ class FETools
                                      * is the interpolation from @p{fe1}
                                      * to @p{fe2}. $(Id-I_h)z1$ is
                                      * denoted by @p{z1_difference}.
+                                     *
+                                     * Note, that this function does
+                                     * not work on continuous
+                                     * elements at hanging nodes.
                                      */
     template <int dim, typename number>
     static void interpolation_difference(const DoFHandler<dim> &dof1,