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- // Boost.Units - A C++ library for zero-overhead dimensional analysis and
- // unit/quantity manipulation and conversion
- //
- // Copyright (C) 2003-2008 Matthias Christian Schabel
- // Copyright (C) 2008 Steven Watanabe
- //
- // Distributed under the Boost Software License, Version 1.0. (See
- // accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- /**
- \file
-
- \brief test_absolute.cpp
- \details
- Test absolute units.
- Output:
- @verbatim
- @endverbatim
- **/
- #include <boost/units/quantity.hpp>
- #include <boost/units/absolute.hpp>
- #include <boost/units/unit.hpp>
- #include <boost/units/make_system.hpp>
- #include <boost/units/physical_dimensions.hpp>
- #include <boost/units/base_units/si/kelvin.hpp>
- #include <boost/units/base_units/temperature/celsius.hpp>
- #include <boost/units/base_units/temperature/fahrenheit.hpp>
- #include <iostream>
- #include <boost/test/minimal.hpp>
- #define BOOST_UNITS_CHECK_CLOSE(a, b) (BOOST_CHECK((std::abs((a) - (b)) < .0000001)))
- namespace bu = boost::units;
- using bu::si::kelvin_base_unit;
- using bu::temperature::celsius_base_unit;
- using bu::temperature::fahrenheit_base_unit;
- typedef bu::unit<bu::temperature_dimension,bu::make_system<kelvin_base_unit>::type> kelvin_type;
- typedef bu::unit<bu::temperature_dimension,bu::make_system<celsius_base_unit>::type> celsius_type;
- typedef bu::unit<bu::temperature_dimension,bu::make_system<fahrenheit_base_unit>::type> fahrenheit_type;
- int test_main(int,char *[])
- {
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::absolute<fahrenheit_type> > q1(212.0 * bu::absolute<fahrenheit_type>());
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::absolute<celsius_type> > q2(0.0 * bu::absolute<celsius_type>());
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::absolute<fahrenheit_type> > q3(q2);
- BOOST_CONSTEXPR_OR_CONST bu::quantity<fahrenheit_type> q4(q1 - q3);
- BOOST_UNITS_CHECK_CLOSE(q4.value(), 180.0);
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::absolute<kelvin_type> > q5(static_cast<bu::quantity<kelvin_type> >(q4) + static_cast<bu::quantity<bu::absolute<kelvin_type> > >(q2));
- BOOST_UNITS_CHECK_CLOSE(q5.value(), 373.15);
- BOOST_CONSTEXPR_OR_CONST bu::quantity<bu::absolute<fahrenheit_type> > q6(q5);
- BOOST_UNITS_CHECK_CLOSE(q6.value(), 212.0);
- return(0);
- }
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