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algebra.hh

00001 // algebra.hh: this file is part of the Vaucanson project.
00002 //
00003 // Vaucanson, a generic library for finite state machines.
00004 //
00005 // Copyright (C) 2011 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 INCLUDE_VAUCANSON_MISC_ALGEBRA_HH
00018 # define INCLUDE_VAUCANSON_MISC_ALGEBRA_HH
00019 
00021 
00022 
00030 
00031 namespace vcsn {
00032   namespace misc {
00034 
00035 
00036 
00037 
00038 
00039 
00040   inline
00041   unsigned long long gcd (unsigned long long a, unsigned long long b);
00042 
00044   inline
00045   unsigned long long lcm (unsigned long long a, unsigned long long b);
00046 
00048   inline
00049   bool is_coprime (unsigned long long a, unsigned long long b);
00050 
00051   inline
00052   unsigned long long abs (long long a);
00053 
00056 } // !misc
00058 } // !vcsn
00059 # if !defined VCSN_USE_INTERFACE_ONLY || defined VCSN_USE_LIB
00060 #  include <vaucanson/misc/algebra.hxx>
00061 # endif // VCSN_USE_INTERFACE_ONLY
00062 
00063 #endif // !INCLUDE_VAUCANSON_MISC_ALGEBRA_HH

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