From 1b197c8d35b5472b0038ec7d5c407d6c6acac635 Mon Sep 17 00:00:00 2001 From: bangerth Date: Mon, 18 Nov 2013 01:32:14 +0000 Subject: [PATCH] Augment documentation. git-svn-id: https://svn.dealii.org/trunk@31694 0785d39b-7218-0410-832d-ea1e28bc413d --- tests/bits/find_cell_10a.cc | 4 ++++ 1 file changed, 4 insertions(+) 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" -- 2.39.5