A rudimentary class implementing tuples of real numbers as a Riemannian...

A rudimentary class implementing tuples of real numbers as a Riemannian manifold.  Mainly for testing

[[Imported from SVN: r5514]]

src/realtuple.hh

+#ifndef REAL_TUPLE_HH
+#define REAL_TUPLE_HH
+
+#include <dune/common/array.hh>
+#include <dune/common/fvector.hh>
+
+
+/** \brief Implement a tuple of real numbers as a Riemannian manifold
+
+Currently this class only exists for testing purposes.
+*/
+
+template <int N>
+class RealTuple
+{
+public:
+
+    typedef Dune::FieldVector<double,N> EmbeddedTangentVector;
+
+    /** \brief Default constructor */
+    RealTuple()
+    {}
+
+    /** \brief Construction from a scalar */
+    RealTuple(double v)
+    {
+        data_.assign(v);
+    }
+    
+    /** \brief Write LocalKey object to output stream */
+    friend std::ostream& operator<< (std::ostream& s, const RealTuple& realTuple)
+    {
+        return s << realTuple.data_;
+    }
+
+private:
+    
+    Dune::array<double,N> data_;
+
+};
+
+#endif