00001 // is_empty.hxx: this file is part of the Vaucanson project. 00002 // 00003 // Vaucanson, a generic library for finite state machines. 00004 // 00005 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2008 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_ALGORITHMS_IS_EMPTY_HXX 00018 # define VCSN_ALGORITHMS_IS_EMPTY_HXX 00019 00020 # include <vaucanson/algorithms/is_empty.hh> 00021 00022 # include <vaucanson/automata/concept/automata_base.hh> 00023 00024 # include <algorithm> 00025 00026 namespace vcsn { 00027 00028 template<typename A, typename AI> 00029 bool 00030 is_empty(const Element<A, AI>& a) 00031 { 00032 return a.states ().size () == 0; 00033 } 00034 00035 } // vcsn 00036 00037 #endif // ! VCSN_ALGORITHMS_IS_EMPTY_HXX
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