// 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 \detailed 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; }