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00018 #ifndef VCSN_ALGORITHMS_AUT_PROJECTION_HH
00019 # define VCSN_ALGORITHMS_AUT_PROJECTION_HH
00020 
00032 
00033 
00034 
00035 # include <map>
00036 
00037 # include <vaucanson/automata/concept/automata.hh>
00038 
00039 namespace vcsn
00040 {
00041   template <typename S, typename T>
00042   void
00043   first_projection(const Element<S, T>&,
00044                    typename projection_traits<S, T>::first_projection_t&);
00045 
00046   template <typename S, typename T>
00047   typename projection_traits<S, T>::first_projection_t
00048   first_projection(const Element<S, T>&);
00049 
00050   template <typename S, typename T>
00051   void
00052   second_projection(const Element<S, T>&,
00053                     typename projection_traits<S, T>::second_projection_t&);
00054 
00055   template <typename S, typename T>
00056   typename projection_traits<S, T>::second_projection_t
00057   second_projection(const Element<S, T>&);
00058 
00059 } 
00060 
00061 # if !defined VCSN_USE_INTERFACE_ONLY && !defined VCSN_USE_LIB
00062 #  include <vaucanson/algorithms/aut_projection.hxx>
00063 # endif // ! VCSN_USE_INTERFACE_ONLY
00064 
00065 #endif // ! VCSN_ALGORITHMS_AUT_PROJECTION_HH