The check whether something was very small needs a <= instead of a <

comparison, in case the rhs is zero itself.

git-svn-id: https://svn.dealii.org/trunk@9542 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/doc/news/c-5.0.html b/deal.II/doc/news/c-5.0.html
index ddb160dcb046b69438ebf23be05c8d17f9a03851..59e780d750710371cd8bfac1b260d665c94dafbe 100644 (file)
--- a/deal.II/doc/news/c-5.0.html
+++ b/deal.II/doc/news/c-5.0.html
@@ -293,6 +293,15 @@ inconvenience this causes.
 <h3>deal.II</h3>
 
 <ol>
+  <li> <p>
+       Fixed: The <code
+       class="member">DerivativeApproximation::approximate_second_derivative</code>
+       function produced wrong results ("not a number" instead of
+       "zero") if the field it was given was constant. This is now fixed.
+       <br> 
+       (WB 2004/08/05)
+       </p>
+
   <li> <p>
        New: The <code class="member">MatrixTools::apply_boundary_values</code>
        that works on block matrices and vectors is now templatized over the