From: bangerth <bangerth@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Thu, 21 Feb 2013 00:08:20 +0000 (+0000)
Subject: Something more.
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=44cbcc114c104db56fcf89c04d561ccea8f51de2;p=dealii-svn.git

Something more.


git-svn-id: https://svn.dealii.org/trunk@28500 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/examples/step-20/step-20.cc b/deal.II/examples/step-20/step-20.cc
index 4bc9d5ef8a..8131eed190 100644
--- a/deal.II/examples/step-20/step-20.cc
+++ b/deal.II/examples/step-20/step-20.cc
@@ -615,7 +615,11 @@ namespace Step20
   // represents. As a consequence, in the code below, we also
   // implement a <tt>Tvmult</tt> function here that represents the
   // product of the transpose matrix with a vector. It is easy to see
-  // how this needs to be implemented here.
+  // how this needs to be implemented here. (Note, however, that even
+  // though we implement this function here, there will in fact not be
+  // any need for it as long as we use SolverCG as the solver since
+  // that solver does not ever call the function that provides this
+  // operation.)
   class ApproximateSchurComplement : public Subscriptor
   {
   public: