]> https://gitweb.dealii.org/ - dealii-svn.git/commitdiff
Improve the computation of new diagonal entries when eliminating a constrained DoF.
authorwolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Mon, 7 Jun 2004 16:52:50 +0000 (16:52 +0000)
committerwolf <wolf@0785d39b-7218-0410-832d-ea1e28bc413d>
Mon, 7 Jun 2004 16:52:50 +0000 (16:52 +0000)
git-svn-id: https://svn.dealii.org/trunk@9401 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/doc/news/c-5.0.html

index c4d67627cff6d1753f1078dddfe5378adfbd54ec..84658b9508d4aee2f5e78ea95e8a51300cc4ef9f 100644 (file)
@@ -176,6 +176,21 @@ inconvenience this causes.
 <h3>deal.II</h3>
 
 <ol>
+  <li> <p>
+       Changed: The <code
+       class="member">MatrixTools::local_apply_boundary_values</code> function
+       used to set the diagonal entries of boundary nodes to one. This is a
+       really bad choice, and the algorithm we use now is much better. There
+       are still a few problems when using this function for matrices that
+       will be solved as a Schur complement; there is nothing we can do in
+       that function in these cases, since we are lacking fundamental pieces
+       of information, but the cases where this applies and the strategies to
+       work with this problem anyway are now well documented in the
+       documentation of the <code class="class">MatrixTools</code> class.
+       <br> 
+       (WB 2004/06/07)
+       </p>
+
   <li> <p>
        Fixed: The <code class="member">GridGenerator::cylinder_shell</code>
        function generated cells that were all inside-out, i.e. had negative

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