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76 lines (59 loc) · 1.94 KB
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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 conversion_factor.cpp
\details An example of using conversion_factor.
Output:
@verbatim
//[conversion_factor_output
1e-005
100
1e-005
100
0.01
//]
@endverbatim
**/
#include <iostream>
#include <boost/units/cmath.hpp>
#include <boost/units/io.hpp>
#include <boost/units/quantity.hpp>
#include <boost/units/systems/cgs/acceleration.hpp>
#include <boost/units/systems/si/acceleration.hpp>
#include <boost/units/systems/si/force.hpp>
#include <boost/units/systems/cgs/force.hpp>
#include <boost/units/systems/si/mass.hpp>
#include <boost/units/systems/cgs/mass.hpp>
#include <boost/units/systems/si/momentum.hpp>
#include <boost/units/systems/cgs/momentum.hpp>
int main()
{
using namespace boost;
using namespace boost::units;
//[conversion_factor_snippet_1
double dyne_to_newton =
conversion_factor(cgs::dyne,si::newton);
std::cout << dyne_to_newton << std::endl;
double force_over_mass_conversion =
conversion_factor(si::newton/si::kilogram,cgs::dyne/cgs::gram);
std::cout << force_over_mass_conversion << std::endl;
double momentum_conversion =
conversion_factor(cgs::momentum(),si::momentum());
std::cout << momentum_conversion << std::endl;
double momentum_over_mass_conversion =
conversion_factor(si::momentum()/si::mass(),cgs::momentum()/cgs::gram);
std::cout << momentum_over_mass_conversion << std::endl;
double acceleration_conversion =
conversion_factor(cgs::gal,si::meter_per_second_squared);
std::cout << acceleration_conversion << std::endl;
//]
return 0;
}