Milena (Olena)
User documentation 2.0a Id
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00001 // Copyright (C) 2007, 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 #include <iostream> 00027 00028 #include <mln/core/concept/function.hh> 00029 #include <mln/value/float01_8.hh> 00030 #include <mln/value/float01_16.hh> 00031 #include <mln/value/int_u8.hh> 00032 00033 00034 namespace mln 00035 { 00036 00037 using namespace value; 00038 00039 float fi(int) { return 0.5f; } 00040 int ii(int) { return 1; } 00041 00042 float fd(double) { return 0.5f; } 00043 int id(double) { return 1; } 00044 00045 00046 struct tofloat01 : Function_v2v<tofloat01> 00047 { 00048 00049 typedef float01_<12> result; 00050 result operator()(int_u8 v) const 00051 { 00052 result ret = static_cast<float>(v) / static_cast<float>(mln_max(int_u8)); 00053 // std::cout << v << "-> " << ret << std::endl; 00054 return ret; 00055 } 00056 }; 00057 00058 struct to8bits : Function_v2v<to8bits> 00059 { 00060 00061 typedef int_u8 result; 00062 result operator()(float01_<12> v) const 00063 { 00064 result ret = static_cast<int>(v.value() * 255); 00065 // FIXME: Dead code. 00066 //std::cout << v << "-> " << ret << std::endl; 00067 return ret; 00068 } 00069 }; 00070 00071 } // mln 00072 00073 00074 int main() 00075 { 00076 using namespace mln; 00077 00078 value::float01_8 a(0.5); 00079 value::float01_16 b(0.5); 00080 00081 mln_assertion(approx_equal(b,a)); 00082 00083 std::cout << b << std::endl; 00084 b = b + 0.2f; 00085 std::cout << b << std::endl; 00086 b = b - 0.2f; 00087 std::cout << b << std::endl; 00088 b = b * 1.5f; 00089 std::cout << b << std::endl; 00090 b = b / 4.6f; 00091 std::cout << b << std::endl; 00092 00093 b = b / 3; 00094 std::cout << b << std::endl; 00095 b = b * 1; 00096 std::cout << b << std::endl; 00097 00098 a = fi( static_cast<int>(a) ); 00099 a = static_cast<float>( ii( static_cast<int>(a) ) ); 00100 a = fd(a); 00101 a = static_cast<float>( id(a) ); 00102 00103 b = a; 00104 a = b; 00105 b = 0.34f; 00106 std::cout << b << std::endl; 00107 b = 0; 00108 std::cout << b << std::endl; 00109 b = 1; 00110 std::cout << b << std::endl; 00111 }