From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Mon, 18 Nov 2013 01:32:14 +0000 (+0000)
Subject: Augment documentation.
X-Git-Tag: v8.1.0~259
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=afa0ce77dacaf781b9e803c98f320790ee309cc1;p=dealii.git

Augment documentation.


git-svn-id: https://svn.dealii.org/trunk@31694 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/tests/bits/find_cell_10a.cc b/tests/bits/find_cell_10a.cc
index 4412b5932d..b4888a15db 100644
--- a/tests/bits/find_cell_10a.cc
+++ b/tests/bits/find_cell_10a.cc
@@ -17,6 +17,10 @@
 
 
 // transform_real_to_unit_cell works for MappingQ(1) but fails for MappingQ1.
+//
+// this is a case where a cell is extremely elongated, and just taking the l2
+// norm to measure progress in a Newton search is inadequate. we need to take a
+// variable norm that keeps the elongation of the cell in mind.
 
 #include "../tests.h"