From b881bf53ca1ba32605d9e5793bd56761d10c6a71 Mon Sep 17 00:00:00 2001 From: Wolfgang Bangerth Date: Mon, 24 Jul 2000 07:46:31 +0000 Subject: [PATCH] Add hint to library class. git-svn-id: https://svn.dealii.org/trunk@3194 0785d39b-7218-0410-832d-ea1e28bc413d --- deal.II/examples/step-9/step-9.cc | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/deal.II/examples/step-9/step-9.cc b/deal.II/examples/step-9/step-9.cc index 5ef997513a..dc169920c8 100644 --- a/deal.II/examples/step-9/step-9.cc +++ b/deal.II/examples/step-9/step-9.cc @@ -493,7 +493,17 @@ BoundaryValues::value_list (const vector > &points, // approximation of the gradient on // each cell and weighs that with a // power of the mesh size, as - // described in the introduction. The + // described in the introduction. + // This class is a simple version of + // the ``DerivativeApproximation'' + // class in the library, that uses + // similar techniques to obtain + // finite difference approximations + // of the gradient of a finite + // element field, or if higher + // derivatives. + // + // The // class has one public static // function ``estimate'' that is // called to compute a vector of -- 2.39.5