(C++) ApfloatExample2

Apfloat example 2 is an apfloat example.

Technical facts

Application type(s)

Desktop application

Operating system(s) or programming environment(s)

Lubuntu 15.04 (vivid)

Qt Creator 3.1.1

GUI application

C++11

G++ 4.9.2

Libraries used:

Qt: version 5.4.1 (32 bit)
STL: GNU ISO C++ Library, version 4.9.2

Qt project file: ./CppApfloatExample2/CppApfloatExample2.pro

exists (../../ConsoleApplicationNoWeffcpp.pri) { include(../../ConsoleApplicationNoWeffcpp.pri) } !exists (../../ConsoleApplication.pri) { QT += core QT += gui greaterThan(QT_MAJOR_VERSION, 4): QT += widgets CONFIG += console CONFIG -= app_bundle TEMPLATE = app CONFIG(release, debug|release) { DEFINES += NDEBUG NTRACE_BILDERBIKKEL } QMAKE_CXXFLAGS += -std=c++11 -Wall -Wextra unix { QMAKE_CXXFLAGS += -Werror } } exists(../../Libraries/Boost.pri) { include(../../Libraries/Boost.pri) } !exists(../../Libraries/Boost.pri) { win32 { INCLUDEPATH += \ ../../Libraries/boost_1_55_0 } } include(../../Libraries/Apfloat.pri) SOURCES += main.cpp

./CppApfloatExample2/main.cpp

#pragma GCC diagnostic push #pragma GCC diagnostic ignored "-Weffc++" #pragma GCC diagnostic ignored "-Wunused-local-typedefs" #pragma GCC diagnostic ignored "-Wunused-variable" #include <iostream> #include <boost/lexical_cast.hpp> #include "apfloat.h" #pragma GCC diagnostic pop double ToDouble(const apfloat& a) { std::stringstream s; s << a; double x = boost::lexical_cast<double>(s.str()); return x; } int main() { const apfloat x = 1.0; const double y = ToDouble(x); const apfloat z = x; assert(y == z); std::cout << x << '\n' << y << '\n' << z << '\n' ; } /* Screen output 0.000000001e9 1 0.000000001e9 Press <RETURN> to close this window... */