base_units/temperature/conversions.hpp

0001 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
0002 // unit/quantity manipulation and conversion
0003 //
0004 // Copyright (C) 2003-2008 Matthias Christian Schabel
0005 // Copyright (C) 2007-2008 Steven Watanabe
0006 //
0007 // Distributed under the Boost Software License, Version 1.0. (See
0008 // accompanying file LICENSE_1_0.txt or copy at
0009 // http://www.boost.org/LICENSE_1_0.txt)
0010
0011 // No include guards.  This header is intended to be included
0012 // multiple times.
0013
0014 // units of temperature
0015
0016 #if defined(BOOST_UNITS_SI_KELVIN_BASE_UNIT_HPP) && defined(BOOST_UNITS_TEMPERATURE_CELSIUS_BASE_UNIT_HPP) &&\
0017     !defined(BOOST_UNITS_SYSTEMS_KELVIN_TO_CELSIUS_CONVERSION_DEFINED)
0018     #define BOOST_UNITS_SYSTEMS_KELVIN_TO_CELSIUS_CONVERSION_DEFINED
0019     #include <boost/units/conversion.hpp>
0020     #include <boost/units/absolute.hpp>
0021     BOOST_UNITS_DEFINE_CONVERSION_FACTOR(boost::units::si::kelvin_base_unit, boost::units::temperature::celsius_base_unit, one, make_one());
0022     BOOST_UNITS_DEFINE_CONVERSION_OFFSET(boost::units::si::kelvin_base_unit, boost::units::temperature::celsius_base_unit, double, -273.15);
0023 #endif
0024
0025 #if defined(BOOST_UNITS_SI_KELVIN_BASE_UNIT_HPP) && defined(BOOST_UNITS_TEMPERATURE_FAHRENHEIT_BASE_UNIT_HPP) &&\
0026     !defined(BOOST_UNITS_SYSTEMS_KELVIN_TO_FAHRENHEIT_CONVERSION_DEFINED)
0027     #define BOOST_UNITS_SYSTEMS_KELVIN_TO_FAHRENHEIT_CONVERSION_DEFINED
0028     #include <boost/units/conversion.hpp>
0029     #include <boost/units/absolute.hpp>
0030     BOOST_UNITS_DEFINE_CONVERSION_FACTOR(boost::units::si::kelvin_base_unit, boost::units::temperature::fahrenheit_base_unit, double, 9.0/5.0);
0031     BOOST_UNITS_DEFINE_CONVERSION_OFFSET(boost::units::si::kelvin_base_unit, boost::units::temperature::fahrenheit_base_unit, double, -273.15 * 9.0 / 5.0 + 32.0);
0032 #endif
0033
0034 #if defined(BOOST_UNITS_TEMPERATURE_CELSIUS_BASE_UNIT_HPP) && defined(BOOST_UNITS_TEMPERATURE_FAHRENHEIT_BASE_UNIT_HPP) &&\
0035     !defined(BOOST_UNITS_SYSTEMS_CELSUIS_TO_FAHRENHEIT_CONVERSION_DEFINED)
0036     #define BOOST_UNITS_SYSTEMS_CELSUIS_TO_FAHRENHEIT_CONVERSION_DEFINED
0037     #include <boost/units/conversion.hpp>
0038     #include <boost/units/absolute.hpp>
0039     BOOST_UNITS_DEFINE_CONVERSION_FACTOR(boost::units::temperature::celsius_base_unit, boost::units::temperature::fahrenheit_base_unit, double, 9.0/5.0);
0040     BOOST_UNITS_DEFINE_CONVERSION_OFFSET(boost::units::temperature::celsius_base_unit, boost::units::temperature::fahrenheit_base_unit, double, 32.0);
0041 #endif
0042