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_CONVERT_TO_HH 00027 # define MLN_CONVERT_TO_HH 00028 00034 00035 # include <mln/core/routine/exact.hh> 00036 # include <mln/metal/equal.hh> 00037 # include <mln/trace/all.hh> 00038 # include <mln/convert/from_to.hh> 00039 # include <mln/convert/from_to.hxx> 00040 00041 00042 namespace mln 00043 { 00044 00045 namespace convert 00046 { 00047 00048 00050 template <typename T, typename O> 00051 T 00052 to(const O& from); 00053 00054 // This is no "Object" here to remain as general as possible. For 00055 // instance, the conversion "float -> glf" should occur. 00056 00057 00058 # ifndef MLN_INCLUDE_ONLY 00059 00060 template <typename T, typename O> 00061 inline 00062 T 00063 to(const O& from) 00064 { 00065 // Technical note: 00066 // No trace should be produced by this routine since it can be 00067 // applied on large sets of data. 00068 00069 mlc_equal(T, mln_exact(T))::check(); 00070 mlc_equal(O, mln_exact(O))::check(); 00071 00072 T tmp; 00073 from_to(from, tmp); 00074 00075 return tmp; 00076 } 00077 00078 # endif // ! MLN_INCLUDE_ONLY 00079 00080 } // end of namespace mln::convert 00081 00082 } // end of namespace mln 00083 00084 00085 # include <mln/convert/from_to.hh> 00086 00087 00088 #endif // ! MLN_CONVERT_TO_HH
1.7.1