spot
0.9.1
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00001 // Copyright (C) 2004 Laboratoire d'Informatique de Paris 6 (LIP6), 00002 // département Systèmes Répartis Coopératifs (SRC), Université Pierre 00003 // et Marie Curie. 00004 // 00005 // This file is part of Spot, a model checking library. 00006 // 00007 // Spot is free software; you can redistribute it and/or modify it 00008 // under the terms of the GNU General Public License as published by 00009 // the Free Software Foundation; either version 2 of the License, or 00010 // (at your option) any later version. 00011 // 00012 // Spot is distributed in the hope that it will be useful, but WITHOUT 00013 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 00014 // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public 00015 // License for more details. 00016 // 00017 // You should have received a copy of the GNU General Public License 00018 // along with Spot; see the file COPYING. If not, write to the Free 00019 // Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 00020 // 02111-1307, USA. 00021 00022 #ifndef SPOT_MISC_MODGRAY_HH 00023 # define SPOT_MISC_MODGRAY_HH 00024 00025 namespace spot 00026 { 00027 00071 class loopless_modular_mixed_radix_gray_code 00072 { 00073 public: 00077 loopless_modular_mixed_radix_gray_code(int n); 00078 00079 virtual ~loopless_modular_mixed_radix_gray_code(); 00080 00090 00092 virtual void a_first(int j) = 0; 00096 virtual void a_next(int j) = 0; 00098 virtual bool a_last(int j) const = 0; 00100 00103 00107 void first(); 00108 00113 bool 00114 last() const 00115 { 00116 return f_[0] == n_; 00117 } 00118 00120 bool 00121 done() const 00122 { 00123 return done_; 00124 } 00125 00132 int next(); 00134 00135 protected: 00136 int n_; 00137 bool done_; 00138 int* a_; 00139 int* f_; 00140 int* m_; 00141 int* s_; 00142 int* non_one_radixes_; 00143 }; 00144 00145 } // spot 00146 00147 # endif // SPOT_MISC_MODGRAY_HH