From: guido <guido@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Wed, 17 Oct 2001 08:13:31 +0000 (+0000)
Subject: functions for BlockMatrixArray added
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6893d705ae3f92bca7afa300d30dbfc7397d1cdb;p=dealii-svn.git

functions for BlockMatrixArray added


git-svn-id: https://svn.dealii.org/trunk@5153 0785d39b-7218-0410-832d-ea1e28bc413d
---

diff --git a/deal.II/lac/include/lac/precondition.h b/deal.II/lac/include/lac/precondition.h
index 489c4a5ec8..966cd0b972 100644
--- a/deal.II/lac/include/lac/precondition.h
+++ b/deal.II/lac/include/lac/precondition.h
@@ -48,6 +48,21 @@ class PreconditionIdentity : public Subscriptor
 				      */
     template<class VECTOR>
     void Tvmult (VECTOR&, const VECTOR&) const;
+				     /**
+				      * Apply preconditioner, adding to the previous value.
+				      */
+    template<class VECTOR>
+    void vmult_add (VECTOR&, const VECTOR&) const;
+
+				     /**
+				      * Apply transpose
+				      * preconditioner, adding. Since this is
+				      * the identity, this function is
+				      * the same as
+				      * @ref{vmult}.
+				      */
+    template<class VECTOR>
+    void Tvmult_add (VECTOR&, const VECTOR&) const;
 };
 
 
@@ -494,6 +509,22 @@ PreconditionIdentity::Tvmult (VECTOR& dst, const VECTOR& src) const
   dst = src;
 }
 
+template<class VECTOR>
+inline void
+PreconditionIdentity::vmult_add (VECTOR& dst, const VECTOR& src) const
+{
+  dst.add(src);
+}
+
+
+
+template<class VECTOR>
+inline void
+PreconditionIdentity::Tvmult_add (VECTOR& dst, const VECTOR& src) const
+{
+  dst.add(src);
+}
+
 //----------------------------------------------------------------------//
 
 template <class MATRIX>