From: Matthias Maier <tamiko@43-1.org>
Date: Thu, 7 May 2020 01:12:01 +0000 (-0500)
Subject: add a comment
X-Git-Tag: v9.2.0-rc1~110^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=31da5f517d4d4b986b3a9f33902e50e6c7bd0fe3;p=dealii.git

add a comment
---

diff --git a/tests/base/utilities_pack_unpack_07.cc b/tests/base/utilities_pack_unpack_07.cc
index b040175ab3..a617cf6a3a 100644
--- a/tests/base/utilities_pack_unpack_07.cc
+++ b/tests/base/utilities_pack_unpack_07.cc
@@ -59,7 +59,9 @@ check(const double (&array)[N])
   deallog << "packed array without compression: " << array_uncompressed.size()
           << std::endl;
 
-  // set the lowest digit to 0:
+  // compression ratio might change depending on architecture and zlib
+  // library used, so set the lowest digit to 0 to make this test more
+  // robust:
 #ifdef DEAL_II_WITH_ZLIB
   deallog << "packed array with compression: "
           << (array_compressed.size() / 10) * 10 << std::endl;