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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 unit.cpp
- \details
- Test unit algebra.
- Output:
- @verbatim
- //[unit_output
- L = m
- L+L = m
- L-L = m
- L/L = dimensionless
- meter*meter = m^2
- M*(L/T)*(L/T) = m^2 kg s^-2
- M*(L/T)^2 = m^2 kg s^-2
- L^3 = m^3
- L^(3/2) = m^(3/2)
- 2vM = kg^(1/2)
- (3/2)vM = kg^(2/3)
- //]
- @endverbatim
- **/
- #include <iostream>
- #include "test_system.hpp"
- #include <boost/units/pow.hpp>
- int main()
- {
- using namespace boost::units;
- using namespace boost::units::test;
- //[unit_snippet_1
- const length L;
- const mass M;
- // needs to be namespace-qualified because of global time definition
- const boost::units::test::time T;
- const energy E;
- //]
-
- std::cout << "L = " << L << std::endl
- << "L+L = " << L+L << std::endl
- << "L-L = " << L-L << std::endl
- << "L/L = " << L/L << std::endl
- << "meter*meter = " << meter*meter << std::endl
- << "M*(L/T)*(L/T) = " << M*(L/T)*(L/T) << std::endl
- << "M*(L/T)^2 = " << M*pow<2>(L/T) << std::endl
- << "L^3 = " << pow<3>(L) << std::endl
- << "L^(3/2) = " << pow<static_rational<3,2> >(L)
- << std::endl
- << "2vM = " << root<2>(M) << std::endl
- << "(3/2)vM = " << root<static_rational<3,2> >(M)
- << std::endl;
- return 0;
- }
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