From f45f251b6cedcd533a999934e9f81bbc52a7b78a Mon Sep 17 00:00:00 2001
From: Jiaqi Zhang <jiaqi2@clemson.edu>
Date: Thu, 1 Jul 2021 14:48:55 +0000
Subject: [PATCH] fix assert for 2d mesh

---
 source/grid/grid_in.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/grid/grid_in.cc b/source/grid/grid_in.cc
index a49a6af20f..71268f7b1e 100644
--- a/source/grid/grid_in.cc
+++ b/source/grid/grid_in.cc
@@ -2173,7 +2173,7 @@ GridIn<dim, spacedim>::read_msh(const std::string &fname)
 #  ifdef DEBUG
         // Make sure the embedded dimension is right
         for (unsigned int d = spacedim; d < 3; ++d)
-          Assert(coord[i * 3 + d] == 0,
+          Assert(std::abs(coord[i * 3 + d]) < 1e-10,
                  ExcMessage("The grid you are reading contains nodes that are "
                             "nonzero in the coordinate with index " +
                             std::to_string(d) +
-- 
2.39.5