Merge branch 'handy_size_formulation' into 'master'

get the size of volume and surface formulations in DD Formulation

See merge request !14

src/problem/Formulation.cpp

@@ -257,6 +257,18 @@ namespace gmshddm
       }
     }
 
+    template< class T_Scalar >
+    unsigned int Formulation< T_Scalar >::size() const
+    {
+      return _volume.size();
+    }
+
+    template< class T_Scalar >
+    unsigned int Formulation< T_Scalar >::size(unsigned int i) const
+    {
+      return _surface.at(i).size();
+    }
+
     template< class T_Scalar >
     const gmshfem::function::ScalarFunction< T_Scalar > Formulation< T_Scalar >::physicalSource(const gmshfem::function::ScalarFunction< T_Scalar > &f)
     {

src/problem/Formulation.h

@@ -58,6 +58,9 @@ namespace gmshddm
       Formulation(const std::string &name, const std::vector< gmshfem::problem::Formulation< T_Scalar > * > &volume, const std::vector< std::unordered_map< unsigned int, gmshfem::problem::Formulation< T_Scalar > * > > &surface);
       ~Formulation();
 
+      unsigned int size() const;
+      unsigned int size(unsigned int i) const;
+
       const gmshfem::function::ScalarFunction< T_Scalar > physicalSource(const gmshfem::function::ScalarFunction< T_Scalar > &f);
       const gmshfem::function::VectorFunction< T_Scalar > physicalSource(const gmshfem::function::VectorFunction< T_Scalar > &f);
       void physicalSourceTerm(const unsigned int termTag);