* update sparse module wrt new diagonal matrix impl

* fix a bug is SparseMatrix

Eigen/src/Sparse/SparseMatrixBase.h

@@ -1,7 +1,7 @@
 // This file is part of Eigen, a lightweight C++ template library
 // for linear algebra.
 //
-// Copyright (C) 2008 Gael Guennebaud <g.gael@free.fr>
+// Copyright (C) 2008-2009 Gael Guennebaud <g.gael@free.fr>
 //
 // Eigen is free software; you can redistribute it and/or
 // modify it under the terms of the GNU Lesser General Public
@@ -37,6 +37,9 @@
   *
   */
 template<typename Derived> class SparseMatrixBase
+#ifndef EIGEN_PARSED_BY_DOXYGEN
+  : public MultiplierBase<Derived>
+#endif // not EIGEN_PARSED_BY_DOXYGEN
 {
   public:
 
@@ -301,10 +304,22 @@ template<typename Derived> class SparseMatrixBase
     { return matrix*scalar; }
 
 
+    // sparse * sparse
     template<typename OtherDerived>
     const typename SparseProductReturnType<Derived,OtherDerived>::Type
     operator*(const SparseMatrixBase<OtherDerived> &other) const;
 
+    // sparse * diagonal
+    template<typename OtherDerived>
+    const SparseDiagonalProduct<Derived,OtherDerived>
+    operator*(const DiagonalBase<OtherDerived> &other) const;
+
+    // diagonal * sparse
+    template<typename OtherDerived> friend 
+    const SparseDiagonalProduct<OtherDerived,Derived>
+    operator*(const DiagonalBase<OtherDerived> &lhs, const SparseMatrixBase& rhs)
+    { return SparseDiagonalProduct<OtherDerived,Derived>(lhs.derived(), rhs.derived()); }
+
     // dense * sparse (return a dense object)
     template<typename OtherDerived> friend
     const typename SparseProductReturnType<OtherDerived,Derived>::Type