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77 lines
2.2 KiB
C++
77 lines
2.2 KiB
C++
// mcs::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) 2003-2007 Matthias Christian Schabel
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// Copyright (C) 2007 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 test_conversion.cpp
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\detailed
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Test conversion between quantities.
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Output:
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@verbatim
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@endverbatim
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**/
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#include <boost/units/quantity.hpp>
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#include <boost/units/systems/si.hpp>
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#include <boost/units/systems/cgs.hpp>
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#include <boost/units/systems/conversions/convert_si_to_cgs.hpp>
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#include <boost/units/systems/conversions/convert_cgs_to_si.hpp>
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#include <iostream>
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#include <boost/test/minimal.hpp>
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namespace bu = boost::units;
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typedef bu::SI::length si_length;
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typedef bu::SI::time si_time;
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typedef bu::SI::mass si_mass;
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typedef bu::SI::area si_area;
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typedef bu::CGS::length cgs_length;
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typedef bu::CGS::time cgs_time;
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typedef bu::CGS::mass cgs_mass;
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typedef bu::CGS::area cgs_area;
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typedef bu::multiply_typeof_helper<si_length, cgs_length>::type mixed_length;
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typedef bu::multiply_typeof_helper<si_time, cgs_time>::type mixed_time;
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typedef bu::divide_typeof_helper<bu::multiply_typeof_helper<si_mass,cgs_area>::type, mixed_time>::type mixed_energy_1;
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typedef bu::divide_typeof_helper<bu::multiply_typeof_helper<cgs_mass,mixed_length>::type,
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bu::multiply_typeof_helper<cgs_time,cgs_time>::type >::type mixed_energy_2;
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int test_main(int,char *[])
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{
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bu::quantity<mixed_length> a1(2.0 * mixed_length());
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bu::quantity<si_area> a2(a1);
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BOOST_CHECK((std::abs(a2.value() - .02) < .0001));
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bu::quantity<mixed_length> a3(a2);
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BOOST_CHECK((std::abs(a3.value() - 2.0) < .0001));
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bu::quantity<mixed_energy_1> e1(2.0 * mixed_energy_1());
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bu::quantity<mixed_energy_2> e2(e1);
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BOOST_CHECK((std::abs(e2.value() - 20.0) < .0001));
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bu::quantity<bu::SI::energy> e3(e1);
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BOOST_CHECK((std::abs(e3.value() - .0002) < .0001));
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bu::quantity<mixed_energy_2> e4(e3);
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BOOST_CHECK((std::abs(e4.value() - 20.0) < .0001));
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return(0);
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}
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