| // 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) 2007-2008 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_scaled_conversion.cpp |
| |
| \details |
| Test unit scaling |
| |
| Output: |
| @verbatim |
| @endverbatim |
| **/ |
| |
| #define BOOST_TEST_MAIN |
| |
| #include <boost/units/systems/si/prefixes.hpp> |
| #include <boost/units/systems/si/time.hpp> |
| #include <boost/units/quantity.hpp> |
| #include <boost/units/io.hpp> |
| |
| #include <sstream> |
| |
| #include <boost/test/unit_test.hpp> |
| #include <boost/test/floating_point_comparison.hpp> |
| |
| namespace bu = boost::units; |
| namespace si = boost::units::si; |
| |
| BOOST_AUTO_TEST_CASE(test_scaled_to_plain) { |
| bu::quantity<si::time> s1 = 12.5 * si::seconds; |
| bu::quantity<si::time> s2(si::nano * s1); |
| BOOST_CHECK_CLOSE_FRACTION(1e-9 * s1.value(), s2.value(), 0.000000001); |
| } |
| |
| BOOST_AUTO_TEST_CASE(test_plain_to_scaled) { |
| bu::quantity<si::time> s1 = 12.5 * si::seconds; |
| typedef bu::multiply_typeof_helper<si::nano_type, si::time>::type time_unit; |
| bu::quantity<time_unit> s2(s1); |
| BOOST_CHECK_CLOSE_FRACTION(1e9 * s1.value(), s2.value(), 0.000000001); |
| } |
| |
| BOOST_AUTO_TEST_CASE(test_scaled_to_scaled) { |
| typedef bu::multiply_typeof_helper<si::mega_type, si::time>::type mega_time_unit; |
| typedef bu::multiply_typeof_helper<si::micro_type, si::time>::type micro_time_unit; |
| bu::quantity<mega_time_unit> s1(12.5 * si::seconds); |
| bu::quantity<micro_time_unit> s2(s1); |
| BOOST_CHECK_CLOSE_FRACTION(1e12 * s1.value(), s2.value(), 0.000000001); |
| } |
| |
| BOOST_AUTO_TEST_CASE(test_conversion_factor) { |
| BOOST_CHECK_CLOSE_FRACTION(conversion_factor(si::nano*si::seconds, si::seconds), 1e-9, 0.000000001); |
| BOOST_CHECK_CLOSE_FRACTION(conversion_factor(si::seconds, si::nano*si::seconds), 1e9, 0.000000001); |
| BOOST_CHECK_CLOSE_FRACTION(conversion_factor(si::mega*si::seconds, si::micro*si::seconds), 1e12, 0.000000001); |
| } |
| |
| BOOST_AUTO_TEST_CASE(test_output) { |
| std::stringstream stream; |
| stream << si::nano * 12.5 * si::seconds; |
| BOOST_CHECK_EQUAL(stream.str(), "12.5 ns"); |
| } |
| |
| BOOST_AUTO_TEST_CASE(test_output_name) { |
| std::stringstream stream; |
| stream << bu::name_format << si::nano * 12.5 * si::seconds; |
| BOOST_CHECK_EQUAL(stream.str(), "12.5 nanosecond"); |
| } |