Vaucanson 1.4
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, 2006 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 vcsn
00024 {
00025   namespace misc
00026   {
00027 
00028     template <typename T>
00029     std::pair<T, T> pair<T>::operator () (T x, T y) const
00030     {
00031       return std::pair<T, T> (x, y);
00032     }
00033 
00034 
00035     template <typename T>
00036     std::pair<T, T> discrepancy<T>::operator () (T x, T y) const
00037     {
00038       T left = std::max<T> (0, x - y);
00039       T right = std::max<T> (0, y - x);
00040 
00041       return std::pair<T, T> (left, right);
00042     }
00043 
00044   } // End of namespace misc.
00045 } // End of namespace vcsn.
00046 
00047 #endif // ! VCSN_MISC_FUNCTORS_HXX