| // 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 quantity.cpp |
| |
| \details |
| Test quantity algebra. |
| |
| Output: |
| @verbatim |
| |
| //[quantity_output_double |
| L = 2 m |
| L+L = 4 m |
| L-L = 0 m |
| L*L = 4 m^2 |
| L/L = 1 dimensionless |
| L*meter = 2 m^2 |
| kilograms*(L/seconds)*(L/seconds) = 4 m^2 kg s^-2 |
| kilograms*(L/seconds)^2 = 4 m^2 kg s^-2 |
| L^3 = 8 m^3 |
| L^(3/2) = 2.82843 m^(3/2) |
| 2vL = 1.41421 m^(1/2) |
| (3/2)vL = 1.5874 m^(2/3) |
| //] |
| |
| //[quantity_output_complex |
| L = (3,4) m |
| L+L = (6,8) m |
| L-L = (0,0) m |
| L*L = (-7,24) m^2 |
| L/L = (1,0) dimensionless |
| L*meter = (3,4) m^2 |
| kilograms*(L/seconds)*(L/seconds) = (-7,24) m^2 kg s^-2 |
| kilograms*(L/seconds)^2 = (-7,24) m^2 kg s^-2 |
| L^3 = (-117,44) m^3 |
| L^(3/2) = (2,11) m^(3/2) |
| 2vL = (2,1) m^(1/2) |
| (3/2)vL = (2.38285,1.69466) m^(2/3) |
| //] |
| |
| @endverbatim |
| **/ |
| |
| #include <complex> |
| #include <iostream> |
| |
| #include <boost/mpl/list.hpp> |
| |
| #include <boost/typeof/std/complex.hpp> |
| |
| #include <boost/units/pow.hpp> |
| #include <boost/units/quantity.hpp> |
| #include <boost/units/io.hpp> |
| |
| #include "test_system.hpp" |
| |
| int main(void) |
| { |
| using namespace boost::units; |
| using namespace boost::units::test; |
| |
| { |
| //[quantity_snippet_1 |
| quantity<length> L = 2.0*meters; // quantity of length |
| quantity<energy> E = kilograms*pow<2>(L/seconds); // quantity of energy |
| //] |
| |
| std::cout << "L = " << L << std::endl |
| << "L+L = " << L+L << std::endl |
| << "L-L = " << L-L << std::endl |
| << "L*L = " << L*L << std::endl |
| << "L/L = " << L/L << std::endl |
| << "L*meter = " << L*meter << std::endl |
| << "kilograms*(L/seconds)*(L/seconds) = " |
| << kilograms*(L/seconds)*(L/seconds) << std::endl |
| << "kilograms*(L/seconds)^2 = " |
| << kilograms*pow<2>(L/seconds) << std::endl |
| << "L^3 = " |
| << pow<3>(L) << std::endl |
| << "L^(3/2) = " |
| << pow<static_rational<3,2> >(L) << std::endl |
| << "2vL = " |
| << root<2>(L) << std::endl |
| << "(3/2)vL = " |
| << root<static_rational<3,2> >(L) << std::endl |
| << std::endl; |
| } |
| |
| { |
| //[quantity_snippet_2 |
| quantity<length,std::complex<double> > L(std::complex<double>(3.0,4.0)*meters); |
| quantity<energy,std::complex<double> > E(kilograms*pow<2>(L/seconds)); |
| //] |
| |
| std::cout << "L = " << L << std::endl |
| << "L+L = " << L+L << std::endl |
| << "L-L = " << L-L << std::endl |
| << "L*L = " << L*L << std::endl |
| << "L/L = " << L/L << std::endl |
| << "L*meter = " << L*meter << std::endl |
| << "kilograms*(L/seconds)*(L/seconds) = " |
| << kilograms*(L/seconds)*(L/seconds) << std::endl |
| << "kilograms*(L/seconds)^2 = " |
| << kilograms*pow<2>(L/seconds) << std::endl |
| << "L^3 = " |
| << pow<3>(L) << std::endl |
| << "L^(3/2) = " |
| << pow<static_rational<3,2> >(L) << std::endl |
| << "2vL = " |
| << root<2>(L) << std::endl |
| << "(3/2)vL = " |
| << root<static_rational<3,2> >(L) << std::endl |
| << std::endl; |
| } |
| |
| return 0; |
| } |
