Milena (Olena)
User documentation 2.0a Id
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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_FUN_V2I_INDEX_OF_VALUE_HH 00027 # define MLN_FUN_V2I_INDEX_OF_VALUE_HH 00028 00032 00033 # include <mln/core/concept/function.hh> 00034 # include <mln/trait/value_.hh> 00035 00036 00037 namespace mln 00038 { 00039 00040 namespace fun 00041 { 00042 00043 namespace v2i 00044 { 00045 00046 template <typename T> 00047 struct index_of_value : Function_v2v< index_of_value<T> >, 00048 private metal::bool_<(mln_dim(T) == 1)>::check_t 00049 { 00050 typedef unsigned result; 00051 unsigned operator()(const T& v) const; 00052 }; 00053 00054 template <> 00055 struct index_of_value<bool> : Function_v2v< index_of_value<bool> > 00056 { 00057 typedef unsigned result; 00058 unsigned operator()(bool b) const; 00059 }; 00060 00061 template <typename T> 00062 unsigned 00063 meta_index_of_value(const T& v); 00064 00065 00066 # ifndef MLN_INCLUDE_ONLY 00067 00068 template <typename T> 00069 inline 00070 unsigned 00071 index_of_value<T>::operator()(const T& v) const 00072 { 00073 return unsigned( int(v) - int(mln_min(T)) ); 00074 } 00075 00076 inline 00077 unsigned index_of_value<bool>::operator()(bool b) const 00078 { 00079 return b ? 1u : 0u; 00080 } 00081 00082 template <typename T> 00083 inline 00084 unsigned 00085 meta_index_of_value(const T& v) 00086 { 00087 index_of_value<T> f; 00088 return f(v); 00089 } 00090 00091 # endif // ! MLN_INCLUDE_ONLY 00092 00093 } // end of namespace mln::fun::v2i 00094 00095 } // end of namespace mln::fun 00096 00097 } // end of namespace mln 00098 00099 #endif // ! MLN_FUN_V2I_INDEX_OF_VALUE_HH