00001 // Copyright (C) 2009 EPITA Research and Development Laboratory (LRDE) 00002 // 00003 // This file is part of Olena. 00004 // 00005 // Olena is free software: you can redistribute it and/or modify it under 00006 // the terms of the GNU General Public License as published by the Free 00007 // Software Foundation, version 2 of the License. 00008 // 00009 // Olena is distributed in the hope that it will be useful, 00010 // but WITHOUT ANY WARRANTY; without even the implied warranty of 00011 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00012 // General Public License for more details. 00013 // 00014 // You should have received a copy of the GNU General Public License 00015 // along with Olena. If not, see <http://www.gnu.org/licenses/>. 00016 // 00017 // As a special exception, you may use this file as part of a free 00018 // software project without restriction. Specifically, if other files 00019 // instantiate templates or use macros or inline functions from this 00020 // file, or you compile this file and link it with other files to produce 00021 // an executable, this file does not by itself cause the resulting 00022 // executable to be covered by the GNU General Public License. This 00023 // exception does not however invalidate any other reasons why the 00024 // executable file might be covered by the GNU General Public License. 00025 00026 #ifndef MLN_CANVAS_LABELING_INTERNAL_FIND_ROOT_FASTEST_HH 00027 # define MLN_CANVAS_LABELING_INTERNAL_FIND_ROOT_FASTEST_HH 00028 00032 00033 namespace mln 00034 { 00035 00036 namespace canvas 00037 { 00038 00039 namespace labeling 00040 { 00041 00042 namespace internal 00043 { 00044 00045 template <typename I> 00046 unsigned 00047 find_root_fastest(I& parent, unsigned x); 00048 00049 # ifndef MLN_INCLUDE_ONLY 00050 00051 00052 template <typename I> 00053 inline 00054 unsigned 00055 find_root_fastest(I& parent, unsigned x) 00056 { 00057 if (parent.element(x) == x) 00058 return x; 00059 else 00060 return parent.element(x) = find_root_fastest(parent, 00061 parent.element(x)); 00062 } 00063 00064 # endif // ! MLN_INCLUDE_ONLY 00065 00066 } // end of namespace mln::canvas::internal 00067 00068 } // end of namespace mln::canvas::labeling 00069 00070 } // end of namespace mln::canvas 00071 00072 } // end of namespace mln 00073 00074 #endif // ! MLN_CANVAS_LABELING_INTERNAL_FIND_ROOT_FASTEST_HH
1.7.1