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00017 #ifndef VCSN_ALGORITHMS_PROJECTION_HH
00018 # define VCSN_ALGORITHMS_PROJECTION_HH
00019 
00030 
00031 
00032 # include <vaucanson/algebra/concept/freemonoid_product.hh>
00033 # include <vaucanson/automata/concept/transducer.hh>
00034 
00035 namespace vcsn {
00036 
00039   template <typename auto_t, typename trans_t>
00040   void
00041   set_states(const trans_t&, auto_t&,
00042              std::map<typename trans_t::hstate_t, typename auto_t::hstate_t>&);
00043 
00044   
00045 
00046 
00047 
00048   template <typename S, typename S2, typename T, typename T2>
00049   void
00050   identity(const Element<S,T>& aut, Element<S2, T2>& res);
00051 
00054 } 
00055 
00056 # if !defined VCSN_USE_INTERFACE_ONLY && !defined VCSN_USE_LIB
00057 #  include <vaucanson/algorithms/projection.hxx>
00058 # endif // ! VCSN_USE_INTERFACE_ONLY
00059 
00060 #endif // ! VCSN_ALGORITHMS_PROJECTION_HH