]> https://gitweb.dealii.org/ - dealii-svn.git/commitdiff
add more detailed documentation about this special condense function
authorkanschat <kanschat@0785d39b-7218-0410-832d-ea1e28bc413d>
Thu, 3 May 2007 22:24:47 +0000 (22:24 +0000)
committerkanschat <kanschat@0785d39b-7218-0410-832d-ea1e28bc413d>
Thu, 3 May 2007 22:24:47 +0000 (22:24 +0000)
git-svn-id: https://svn.dealii.org/trunk@14665 0785d39b-7218-0410-832d-ea1e28bc413d

deal.II/deal.II/include/dofs/dof_constraints.h

index cdcfe0c01ceb94fff0be0359d18394b4a5e8aef0..6243f635a61a73cd86cea97e9c4cbd5b23e5b78a 100644 (file)
@@ -499,6 +499,17 @@ class ConstraintMatrix : public Subscriptor
                                      * The constraint matrix object
                                      * must be closed to call this
                                      * function.
+                                     *
+                                     * @note The hanging nodes are
+                                     * completely eliminated from the
+                                     * linear system refering to
+                                     * <tt>condensed</tt>. Therefore,
+                                     * the dimension of
+                                     * <tt>condensed</tt> is the
+                                     * dimension of
+                                     * <tt>uncondensed</tt> minus the
+                                     * number of constraint degrees
+                                     * of freedom.
                                      */
     void condense (const SparsityPattern &uncondensed,
                   SparsityPattern       &condensed) const;

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