From 60cc2c2d3a8825ccbeb5daa6f7bd525f169a1e5f Mon Sep 17 00:00:00 2001
From: Peter Munch <peterrmuench@gmail.com>
Date: Fri, 19 Jun 2020 12:46:45 +0200
Subject: [PATCH] Simplify CellAccessor::at_boundary()

---
 source/grid/tria_accessor.cc | 19 +++++--------------
 1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/source/grid/tria_accessor.cc b/source/grid/tria_accessor.cc
index 51a0971543..4a48e71df8 100644
--- a/source/grid/tria_accessor.cc
+++ b/source/grid/tria_accessor.cc
@@ -2023,20 +2023,11 @@ template <int dim, int spacedim>
 bool
 CellAccessor<dim, spacedim>::at_boundary() const
 {
-  switch (dim)
-    {
-      case 1:
-        return at_boundary(0) || at_boundary(1);
-      case 2:
-        return (at_boundary(0) || at_boundary(1) || at_boundary(2) ||
-                at_boundary(3));
-      case 3:
-        return (at_boundary(0) || at_boundary(1) || at_boundary(2) ||
-                at_boundary(3) || at_boundary(4) || at_boundary(5));
-      default:
-        Assert(false, ExcNotImplemented());
-        return false;
-    }
+  for (const auto face : GeometryInfo<dim>::face_indices())
+    if (at_boundary(face))
+      return true;
+
+  return false;
 }
 
 
-- 
2.39.5