99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
// Boost.Units - A C++ library for zero-overhead dimensional analysis and
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// unit/quantity manipulation and conversion
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//
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// Copyright (C) 2003-2008 Matthias Christian Schabel
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// Copyright (C) 2008 Steven Watanabe
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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/**
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\file
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\brief temperature.cpp
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\details
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Conversions between Fahrenheit and Kelvin for absolute temperatures and
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temperature differences.
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Output:
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@verbatim
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//[ temperature_output_1
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{ 32 } F
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{ 273.15 } K
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{ 273.15 } K
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[ 32 ] F
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[ 17.7778 ] K
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[ 17.7778 ] K
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//]
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@endverbatim
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**/
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#include <iomanip>
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#include <iostream>
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#include <boost/units/absolute.hpp>
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#include <boost/units/get_system.hpp>
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#include <boost/units/io.hpp>
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#include <boost/units/unit.hpp>
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#include <boost/units/quantity.hpp>
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#include <boost/units/systems/si/temperature.hpp>
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#include <boost/units/detail/utility.hpp>
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#include <boost/units/base_units/temperature/fahrenheit.hpp>
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using namespace boost::units;
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namespace boost {
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namespace units {
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namespace fahrenheit {
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//[temperature_snippet_1
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typedef temperature::fahrenheit_base_unit::unit_type temperature;
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typedef get_system<temperature>::type system;
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BOOST_UNITS_STATIC_CONSTANT(degree,temperature);
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BOOST_UNITS_STATIC_CONSTANT(degrees,temperature);
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//]
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} // fahrenheit
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} // namespace units
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} // namespace boost
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int main()
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{
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//[temperature_snippet_3
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quantity<absolute<fahrenheit::temperature> > T1p(
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32.0*absolute<fahrenheit::temperature>());
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quantity<fahrenheit::temperature> T1v(
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32.0*fahrenheit::degrees);
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quantity<absolute<si::temperature> > T2p(T1p);
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quantity<si::temperature> T2v(T1v);
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//]
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typedef conversion_helper<
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quantity<absolute<fahrenheit::temperature> >,
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quantity<absolute<si::temperature> > > absolute_conv_type;
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typedef conversion_helper<
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quantity<fahrenheit::temperature>,
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quantity<si::temperature> > relative_conv_type;
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std::cout << T1p << std::endl
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<< absolute_conv_type::convert(T1p) << std::endl
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<< T2p << std::endl
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<< T1v << std::endl
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<< relative_conv_type::convert(T1v) << std::endl
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<< T2v << std::endl
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<< std::endl;
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return 0;
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}
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