Use relative tolerances.

diff --git a/source/grid/tria_description.cc b/source/grid/tria_description.cc
index 1a1410074d0b5e765c5c4c896f925a04f9ad4124..2043e65c2425332b071431ec690c2acfb9a60a04 100644 (file)
--- a/source/grid/tria_description.cc
+++ b/source/grid/tria_description.cc
@@ -280,7 +280,9 @@ namespace TriangulationDescription
                    const std::pair<unsigned int, Point<spacedim>> &b) {
                   if (a.first == b.first)
                     {
-                      Assert(a.second.distance(b.second) < 10e-8,
+                      Assert(a.second.distance(b.second) <=
+                               1e-7 *
+                                 std::max(a.second.norm(), b.second.norm()),
                              ExcInternalError());
                       return true;
                     }