From cd909bcf6cf7d5619dd27f7b1a40695341351e50 Mon Sep 17 00:00:00 2001
From: wolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Wed, 21 Nov 2001 15:40:01 +0000
Subject: [PATCH] Fix neighbor_of_coarser_neighbor for 1d.

git-svn-id: https://svn.dealii.org/branches/Branch-3-2@5237 0785d39b-7218-0410-832d-ea1e28bc413d
---
 deal.II/deal.II/include/grid/tria_accessor.h |  8 ++++++--
 deal.II/deal.II/source/grid/tria_accessor.cc | 21 +++++++++++++++-----
 2 files changed, 22 insertions(+), 7 deletions(-)

diff --git a/deal.II/deal.II/include/grid/tria_accessor.h b/deal.II/deal.II/include/grid/tria_accessor.h
index dbfc55ccd3..718f38c1a4 100644
--- a/deal.II/deal.II/include/grid/tria_accessor.h
+++ b/deal.II/deal.II/include/grid/tria_accessor.h
@@ -1882,9 +1882,13 @@ class CellAccessor :  public TriaObjectAccessor<dim,dim>
 				      * pair of numbers, face_no and
 				      * subface_no, with the following
 				      * property:
-				      * @p{cell->neighbor(neighbor)->face(face_no)->child(subface_no)==cell}.
+				      * @p{cell->neighbor(neighbor)->face(face_no)->child(subface_no)==cell->face(neighbor)}.
+				      *
+				      * This function is impossible
+				      * for @p{dim==1}.
 				      */
-    std::pair<unsigned int, unsigned int> neighbor_of_coarser_neighbor (const unsigned int neighbor) const;
+    std::pair<unsigned int, unsigned int>
+    neighbor_of_coarser_neighbor (const unsigned int neighbor) const;
     
 				     /**
 				      *  Return whether the @p{i}th
diff --git a/deal.II/deal.II/source/grid/tria_accessor.cc b/deal.II/deal.II/source/grid/tria_accessor.cc
index 5019e76d69..f7b2722b63 100644
--- a/deal.II/deal.II/source/grid/tria_accessor.cc
+++ b/deal.II/deal.II/source/grid/tria_accessor.cc
@@ -1572,6 +1572,17 @@ bool CellAccessor<1>::point_inside (const Point<1> &p) const
   return (vertex(0)[0] <= p[0]) && (p[0] <= vertex(1)[0]);
 }
 
+
+template <>
+std::pair<unsigned int, unsigned int>
+CellAccessor<1>::neighbor_of_coarser_neighbor (const unsigned int) const
+{
+  Assert(false, ExcImpossibleInDim(1));
+  return std::make_pair (static_cast<unsigned int>(-1),
+			 static_cast<unsigned int>(-1));
+}
+
+
 #endif
 
 
@@ -1787,7 +1798,7 @@ unsigned int CellAccessor<dim>::neighbor_of_neighbor (const unsigned int neighbo
 
 
 template <int dim>
-pair<unsigned int, unsigned int>
+std::pair<unsigned int, unsigned int>
 CellAccessor<dim>::neighbor_of_coarser_neighbor (const unsigned int neighbor) const
 {
 				   // make sure that the neighbor is
@@ -1822,7 +1833,7 @@ CellAccessor<dim>::neighbor_of_coarser_neighbor (const unsigned int neighbor) co
   if (face_guess->has_children())
     for (unsigned int subface_no=0; subface_no<GeometryInfo<dim>::subfaces_per_face; ++subface_no)
       if (face_guess->child(subface_no)==this_face)
-	return pair<unsigned int,unsigned int> (face_no_guess, subface_no);
+	return std::make_pair (face_no_guess, subface_no);
 
 				     // if the guess was false, then
 				     // we need to loop over all faces
@@ -1837,7 +1848,7 @@ CellAccessor<dim>::neighbor_of_coarser_neighbor (const unsigned int neighbor) co
 	  if (face->has_children())
 	    for (unsigned int subface_no=0; subface_no<GeometryInfo<dim>::subfaces_per_face; ++subface_no)
 	      if (face->child(subface_no)==this_face)
-		return pair<unsigned int,unsigned int> (face_no, subface_no);
+		return std::make_pair (face_no, subface_no);
 	}
     }
   
@@ -1845,8 +1856,8 @@ CellAccessor<dim>::neighbor_of_coarser_neighbor (const unsigned int neighbor) co
 				   // since then we did not find
 				   // our way back...
   Assert (false, ExcInternalError());
-  return pair<unsigned int,unsigned int> (static_cast<unsigned int>(-1),
-					  static_cast<unsigned int>(-1));
+  return std::make_pair (static_cast<unsigned int>(-1),
+			 static_cast<unsigned int>(-1));
 };
 
 
-- 
2.39.5