ceph/src/boost/libs/units/test/test_absolute.cpp

   1 // Boost.Units - A C++ library for zero-overhead dimensional analysis and
   2 // unit/quantity manipulation and conversion
   3 //
   4 // Copyright (C) 2003-2008 Matthias Christian Schabel
   5 // Copyright (C) 2008 Steven Watanabe
   6 //
   7 // Distributed under the Boost Software License, Version 1.0. (See
   8 // accompanying file LICENSE_1_0.txt or copy at
   9 // http://www.boost.org/LICENSE_1_0.txt)
  10
  11 /**
  12 \file
  13
  14 \brief test_absolute.cpp
  15
  16 \details
  17 Test absolute units.
  18
  19 Output:
  20 @verbatim
  21 @endverbatim
  22 **/
  23
  24 #include <boost/units/quantity.hpp>
  25 #include <boost/units/absolute.hpp>
  26 #include <boost/units/unit.hpp>
  27 #include <boost/units/make_system.hpp>
  28 #include <boost/units/physical_dimensions.hpp>
  29 #include <boost/units/base_units/si/kelvin.hpp>
  30 #include <boost/units/base_units/temperature/celsius.hpp>
  31 #include <boost/units/base_units/temperature/fahrenheit.hpp>
  32
  33 #include <iostream>
  34
  35 #include <boost/test/minimal.hpp>
  36
  37 #define BOOST_UNITS_CHECK_CLOSE(a, b) (BOOST_CHECK((std::abs((a) - (b)) < .0000001)))
  38
  39 namespace bu = boost::units;
  40 using bu::si::kelvin_base_unit;
  41 using bu::temperature::celsius_base_unit;
  42 using bu::temperature::fahrenheit_base_unit;
  43
  44 typedef bu::unit<bu::temperature_dimension,bu::make_system<kelvin_base_unit>::type> kelvin_type;
  45
  46 typedef bu::unit<bu::temperature_dimension,bu::make_system<celsius_base_unit>::type> celsius_type;
  47
  48 typedef bu::unit<bu::temperature_dimension,bu::make_system<fahrenheit_base_unit>::type> fahrenheit_type;
  49
  50 int test_main(int,char *[])
  51 {
  52     bu::quantity<bu::absolute<fahrenheit_type> > q1(212.0 * bu::absolute<fahrenheit_type>());
  53     bu::quantity<bu::absolute<celsius_type> > q2(0.0 * bu::absolute<celsius_type>());
  54     bu::quantity<bu::absolute<fahrenheit_type> > q3(q2);
  55     bu::quantity<fahrenheit_type> q4(q1 - q3);
  56
  57     BOOST_UNITS_CHECK_CLOSE(q4.value(), 180.0);
  58
  59     bu::quantity<bu::absolute<kelvin_type> > q5(static_cast<bu::quantity<kelvin_type> >(q4) + static_cast<bu::quantity<bu::absolute<kelvin_type> > >(q2));
  60
  61     BOOST_UNITS_CHECK_CLOSE(q5.value(), 373.15);
  62
  63     bu::quantity<bu::absolute<fahrenheit_type> > q6(q5);
  64
  65     BOOST_UNITS_CHECK_CLOSE(q6.value(), 212.0);
  66
  67     return(0);
  68 }