* constant flow direction. If the
* additional argument @p
* dof_wise_renumbering is set to @p false,
- * the numbering is performed cell-wise. If
- * it is set to @p true, the dofs are
- * renumbered for finite elements that are
- * based on support points. Note that in
- * this case, the numbering of points will
- * be unaffected in case two points are
- * located the same with respect to the
- * downstream direction.
+ * the numbering is performed cell-wise,
+ * otherwise it is performed based on the
+ * location of the support points.
*
* The cells are sorted such that
* the centers of higher numbers
* grids, this might not be
* guaranteed for all meshes.
*
- * This function produces a
- * downstream ordering of the
+ * If the @p dof_wise_renumbering argument
+ * is set to @p false, this function
+ * produces a downstream ordering of the
* mesh cells and calls
- * cell_wise_dg(). Therefore, it
- * only works with Discontinuous
- * Galerkin Finite Elements,
- * i.e. all degrees of freedom
- * have to be associated with the
- * interior of the cell.
+ * cell_wise(). Therefore, the output only
+ * makes sense for Discontinuous Galerkin
+ * Finite Elements (all degrees of freedom
+ * have to be associated with the interior
+ * of the cell in that case) in that case.
+ *
+ * If @p dof_wise_renumbering is set to @p
+ * true, the degrees of freedom are
+ * renumbered based on the support point
+ * location of the individual degrees of
+ * freedom (obviously, the finite element
+ * needs to define support points for this
+ * to work). The numbering of points with
+ * the same position in downstream location
+ * (e.g. those parallel to the flow
+ * direction, or several dofs within a
+ * FESystem) will be unaffected.
*/
template <class DH, int dim>
void