00001 // Copyright (C) 2008, 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_X2V_L1_NORM_HH 00027 # define MLN_FUN_X2V_L1_NORM_HH 00028 00032 00033 # include <mln/core/concept/function.hh> 00034 # include <mln/algebra/vec.hh> 00035 # include <mln/math/abs.hh> 00036 00037 00038 namespace mln 00039 { 00040 00041 namespace fun 00042 { 00043 00044 namespace x2v 00045 { 00046 00047 template <typename V> 00048 struct l1_norm : public Function_v2v< l1_norm<V> > 00049 { 00050 typedef mln_coord(V) C; 00051 typedef mln_sum(C) result; 00052 00053 result operator()(const V& v) const; 00054 }; 00055 00056 00057 # ifndef MLN_INCLUDE_ONLY 00058 00059 template <typename V> 00060 inline 00061 typename l1_norm<V>::result 00062 l1_norm<V>::operator()(const V& v) const 00063 { 00064 result res = 0; 00065 for (unsigned i = 0; i < V::dim; ++i) 00066 res += mln::math::abs(v[i]); 00067 return res; 00068 } 00069 00070 # endif // ! MLN_INCLUDE_ONLY 00071 00072 } // end of namespace mln::fun::x2v 00073 00074 } // end of namespace mln::fun 00075 00076 } // end of namespace mln 00077 00078 00079 #endif // ! MLN_FUN_X2V_L1_NORM_HH
1.7.1