functors.hxx

00001 // functors.hxx: this file is part of the Vaucanson project.
00002 //
00003 // Vaucanson, a generic library for finite state machines.
00004 //
00005 // Copyright (C) 2005 The Vaucanson Group.
00006 //
00007 // This program is free software; you can redistribute it and/or
00008 // modify it under the terms of the GNU General Public License
00009 // as published by the Free Software Foundation; either version 2
00010 // of the License, or (at your option) any later version.
00011 //
00012 // The complete GNU General Public Licence Notice can be found as the
00013 // `COPYING' file in the root directory.
00014 //
00015 // The Vaucanson Group consists of people listed in the `AUTHORS' file.
00016 //
00017 #ifndef VCSN_MISC_FUNCTORS_HXX
00018 # define VCSN_MISC_FUNCTORS_HXX
00019 
00020 # include <vaucanson/misc/functors.hh>
00021 # include <algorithm>
00022 
00023 namespace utility
00024 {
00025 
00026   template <typename T>
00027   std::pair<T, T> pair<T>::operator()(T x, T y) const
00028   {
00029     return std::pair<T, T> (x, y);
00030   }
00031 
00032 
00033   template <typename T>
00034   std::pair<T, T> discrepancy<T>::operator() (T x, T y) const
00035   {
00036     T   left = std::max<T>(0, x - y);
00037     T   right = std::max<T>(0, y - x);
00038 
00039     return std::pair<T, T> (left, right);
00040   }
00041 
00042 } // End of namespace utility.
00043 
00044 #endif // ! VCSN_MISC_FUNCTORS_HXX

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