From 19faa6ec92cc9f45db6d337e799f3b6f2ec4af4a Mon Sep 17 00:00:00 2001
From: laurence <laurence>
Date: Thu, 20 Dec 2012 11:23:38 +0000
Subject: [PATCH] ENH: Add null constructor to DiagonalMatrix

---
 src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.C | 7 +++++++
 src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.H | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.C b/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.C
index 6bba442cda..d6bc7f7b71 100644
--- a/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.C
+++ b/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.C
@@ -27,6 +27,13 @@ License
 
 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
+template<class Type>
+inline Foam::DiagonalMatrix<Type>::DiagonalMatrix()
+:
+    List<Type>()
+{}
+
+
 template<class Type>
 template<class Form>
 Foam::DiagonalMatrix<Type>::DiagonalMatrix(const Matrix<Form, Type>& a)
diff --git a/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.H b/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.H
index c89f915578..031320a457 100644
--- a/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.H
+++ b/src/OpenFOAM/matrices/DiagonalMatrix/DiagonalMatrix.H
@@ -60,6 +60,9 @@ public:
 
     // Constructors
 
+        //- Null constructor.
+        DiagonalMatrix<Type>();
+
         //- Construct from diagonal component of a Matrix
         template<class Form>
         DiagonalMatrix<Type>(const Matrix<Form, Type>&);