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00017 #ifndef VCSN_ALGORITHMS_LETTER_TO_LETTER_COMPOSITION_HH
00018 # define VCSN_ALGORITHMS_LETTER_TO_LETTER_COMPOSITION_HH
00019 
00031 # include <vaucanson/design_pattern/design_pattern.hh>
00032 
00033 namespace vcsn {
00034 
00037 
00038   template <class S, class T>
00039   Element<S, T>
00040   letter_to_letter_composition(const Element<S, T>& lhs,
00041                                const Element<S, T>& rhs);
00042 
00045 } 
00046 
00047 # if !defined VCSN_USE_INTERFACE_ONLY && !defined VCSN_USE_LIB
00048 #  include <vaucanson/algorithms/letter_to_letter_composition.hxx>
00049 # endif // VCSN_USE_INTERFACE_ONLY
00050 
00051 #endif // ! VCSN_ALGORITHMS_LETTER_TO_LETTER_COMPOSITION_HH