From: Matthias Maier <tamiko@43-1.org>
Date: Fri, 29 Mar 2024 00:15:40 +0000 (-0500)
Subject: Test grid/closest_point: guard against roundoff error
X-Git-Tag: v9.6.0-rc1~432^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F16812%2Fhead;p=dealii.git

Test grid/closest_point: guard against roundoff error
---

diff --git a/tests/grid/closest_point.cc b/tests/grid/closest_point.cc
index 9ab7ad648a..0413c08509 100644
--- a/tests/grid/closest_point.cc
+++ b/tests/grid/closest_point.cc
@@ -24,7 +24,8 @@ test(const ReferenceCell &reference_cell,
   for (const unsigned int vertex_no : reference_cell.vertex_indices())
     AssertThrow(distance_square <=
                   p.distance_square(
-                    reference_cell.template vertex<dim>(vertex_no)),
+                    reference_cell.template vertex<dim>(vertex_no)) *
+                    (1. + 2. * std::numeric_limits<double>::epsilon()),
                 ExcInternalError());
 
   // Also generate a lot of points in the unit cell - we should be closer than