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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/boost/libs/units/tutorial | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/boost/libs/units/tutorial/tutorial_1.cpp | 314 |
1 files changed, 314 insertions, 0 deletions
diff --git a/src/boost/libs/units/tutorial/tutorial_1.cpp b/src/boost/libs/units/tutorial/tutorial_1.cpp new file mode 100644 index 000000000..f7508a6c1 --- /dev/null +++ b/src/boost/libs/units/tutorial/tutorial_1.cpp @@ -0,0 +1,314 @@ +// 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) + +#include <iostream> + +#include <boost/units/units_fwd.hpp> + +#include <boost/units/base_dimension.hpp> +#include <boost/units/base_unit.hpp> +#include <boost/units/derived_dimension.hpp> +#include <boost/units/make_system.hpp> +#include <boost/units/io.hpp> +#include <boost/units/quantity.hpp> +#include <boost/units/static_constant.hpp> +#include <boost/units/unit.hpp> + +namespace boost { + +namespace units { + +struct length_base_dimension : boost::units::base_dimension<length_base_dimension,1> { }; ///> base dimension of length +struct time_base_dimension : boost::units::base_dimension<time_base_dimension,3> { }; ///> base dimension of time + +typedef length_base_dimension::dimension_type length_dimension; +typedef time_base_dimension::dimension_type time_dimension; + +struct length1_base_unit : base_unit<length1_base_unit,length_dimension,1> +{ + static std::string name() { return "length 1"; } + static std::string symbol() { return "l1"; } +}; + +struct length2_base_unit : base_unit<length2_base_unit,length_dimension,2> +{ + static std::string name() { return "length2"; } + static std::string symbol() { return "l2"; } +}; + +struct time1_base_unit : base_unit<time1_base_unit,time_dimension,3> +{ + static std::string name() { return "time1"; } + static std::string symbol() { return "t1"; } +}; + +struct time2_base_unit : base_unit<time2_base_unit,time_dimension,4> +{ + static std::string name() { return "time2"; } + static std::string symbol() { return "t2"; } +}; + +namespace s1 { + +typedef make_system<length1_base_unit,time1_base_unit>::type system; + +/// unit typedefs +typedef unit<dimensionless_type,system> dimensionless; + +typedef unit<length_dimension,system> length; +typedef unit<time_dimension,system> time; + +/// unit constants +BOOST_UNITS_STATIC_CONSTANT(length1,length); +BOOST_UNITS_STATIC_CONSTANT(time1,time); + +} // namespace s1 + +namespace s2 { + +typedef make_system<length2_base_unit,time2_base_unit>::type system; + +/// unit typedefs +typedef unit<dimensionless_type,system> dimensionless; + +typedef unit<length_dimension,system> length; +typedef unit<time_dimension,system> time; + +/// unit constants +BOOST_UNITS_STATIC_CONSTANT(length2,length); +BOOST_UNITS_STATIC_CONSTANT(time2,time); + +} // namespace s2 + +template<class X,class Y> +struct conversion_helper< quantity<s1::length,X>,quantity<s2::length,Y> > +{ + static quantity<s2::length,Y> convert(const quantity<s1::length,X>& source) + { + return quantity<s2::length,Y>::from_value(2.5*source.value()); + } +}; + +template<class X,class Y> +struct conversion_helper< quantity<s2::length,X>,quantity<s1::length,Y> > +{ + static quantity<s1::length,Y> convert(const quantity<s2::length,X>& source) + { + return quantity<s1::length,Y>::from_value((1.0/2.5)*source.value()); + } +}; + +template<class X,class Y> +struct conversion_helper< quantity<s1::time,X>,quantity<s2::time,Y> > +{ + static quantity<s2::time,Y> convert(const quantity<s1::time,X>& source) + { + return quantity<s2::time,Y>::from_value(0.5*source.value()); + } +}; + +} // namespace units + +} // namespace boost + +int main(void) +{ + using namespace boost::units; + + quantity<s1::length,float> l1(1.0*s1::length1); + quantity<s2::length,double> l2(1.5*l1); + quantity<s1::length,float> l3(2.0*l2/3.0); + + quantity<s1::time,float> t1(1.0*s1::time1); + quantity<s2::time,double> t2(1.5*t1); +// quantity<s1::time,float> t3(2.0*t2/3.0); + + return 0; +} + +/* +// 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) + +#include <iostream> + +#include <boost/units/units_fwd.hpp> + +#include <boost/units/base_dimension.hpp> +#include <boost/units/base_unit.hpp> +#include <boost/units/derived_dimension.hpp> +#include <boost/units/make_system.hpp> +#include <boost/units/io.hpp> +#include <boost/units/quantity.hpp> +#include <boost/units/static_constant.hpp> +#include <boost/units/unit.hpp> + +namespace boost { + +namespace units { + +struct length_base_dimension : boost::units::base_dimension<length_base_dimension,1> { }; ///> base dimension of length +struct mass_base_dimension : boost::units::base_dimension<mass_base_dimension,2> { }; ///> base dimension of mass +struct time_base_dimension : boost::units::base_dimension<time_base_dimension,3> { }; ///> base dimension of time + +typedef length_base_dimension::dimension_type length_dimension; +typedef mass_base_dimension::dimension_type mass_dimension; +typedef time_base_dimension::dimension_type time_dimension; + +struct centimeter_base_unit : base_unit<centimeter_base_unit,length_dimension,1> +{ + static std::string name() { return "centimeter"; } + static std::string symbol() { return "cm"; } +}; + +struct gram_base_unit : base_unit<gram_base_unit,mass_dimension,2> +{ + static std::string name() { return "gram"; } + static std::string symbol() { return "g"; } +}; + +struct second_base_unit : base_unit<second_base_unit,time_dimension,3> +{ + static std::string name() { return "second"; } + static std::string symbol() { return "s"; } +}; + +namespace CG { + +typedef make_system<centimeter_base_unit,gram_base_unit>::type system; + +/// unit typedefs +typedef unit<dimensionless_type,system> dimensionless; + +typedef unit<length_dimension,system> length; +typedef unit<mass_dimension,system> mass; + +/// unit constants +BOOST_UNITS_STATIC_CONSTANT(centimeter,length); +BOOST_UNITS_STATIC_CONSTANT(gram,mass); + +} // namespace CG + +namespace cgs { + +typedef make_system<centimeter_base_unit,gram_base_unit,second_base_unit>::type system; + +/// unit typedefs +typedef unit<dimensionless_type,system> dimensionless; + +typedef unit<length_dimension,system> length; +typedef unit<mass_dimension,system> mass; +typedef unit<time_dimension,system> time; + +/// unit constants +BOOST_UNITS_STATIC_CONSTANT(centimeter,length); +BOOST_UNITS_STATIC_CONSTANT(gram,mass); +BOOST_UNITS_STATIC_CONSTANT(second,time); + +} // namespace cgs + +namespace esu { + +typedef make_system<centimeter_base_unit, + gram_base_unit, + second_base_unit>::type system; + +/// derived dimension for force in electrostatic units : L M T^-2 +typedef derived_dimension<length_base_dimension,1, + mass_base_dimension,1, + time_base_dimension,-2>::type force_dimension; + +/// derived dimension for charge in electrostatic units : L^3/2 M^1/2 T^-1 +typedef make_dimension_list< mpl::list< dim<length_base_dimension,static_rational<3,2> >, + dim<mass_base_dimension,static_rational<1,2> >, + dim<time_base_dimension,static_rational<-1> > > >::type charge_dimension; + +/// derived dimension for current in electrostatic units : L^3/2 M^1/2 T^-2 +typedef make_dimension_list< mpl::list< dim<length_base_dimension,static_rational<3,2> >, + dim<mass_base_dimension,static_rational<1,2> >, + dim<time_base_dimension,static_rational<-2> > > >::type current_dimension; + +/// derived dimension for electric potential in electrostatic units : L^1/2 M^1/2 T^-1 +typedef make_dimension_list< mpl::list< dim<length_base_dimension,static_rational<1,2> >, + dim<mass_base_dimension,static_rational<1,2> >, + dim<time_base_dimension,static_rational<-1> > > >::type electric_potential_dimension; + +/// derived dimension for electric field in electrostatic units : L^-1/2 M^1/2 T^-1 +typedef make_dimension_list< mpl::list< dim<length_base_dimension,static_rational<-1,2> >, + dim<mass_base_dimension,static_rational<1,2> >, + dim<time_base_dimension,static_rational<-1> > > >::type electric_field_dimension; + +/// unit typedefs +typedef unit<dimensionless_type,system> dimensionless; + +typedef unit<length_dimension,system> length; +typedef unit<mass_dimension,system> mass; +typedef unit<time_dimension,system> time; + +typedef unit<force_dimension,system> force; + +typedef unit<charge_dimension,system> charge; +typedef unit<current_dimension,system> current; +typedef unit<electric_potential_dimension,system> electric_potential; +typedef unit<electric_field_dimension,system> electric_field; + +/// unit constants +BOOST_UNITS_STATIC_CONSTANT(centimeter,length); +BOOST_UNITS_STATIC_CONSTANT(gram,mass); +BOOST_UNITS_STATIC_CONSTANT(second,time); + +BOOST_UNITS_STATIC_CONSTANT(dyne,force); + +BOOST_UNITS_STATIC_CONSTANT(esu,charge); +BOOST_UNITS_STATIC_CONSTANT(statvolt,electric_potential); + +} // namespace esu + +template<class Y> +quantity<esu::force,Y> coulombLaw(const quantity<esu::charge,Y>& q1, + const quantity<esu::charge,Y>& q2, + const quantity<esu::length,Y>& r) +{ + return q1*q2/(r*r); +} + +} // namespace units + +} // namespace boost + +int main(void) +{ + using namespace boost::units; + + quantity<CG::length> cg_length(1.0*CG::centimeter); + quantity<cgs::length> cgs_length(1.0*cgs::centimeter); + + std::cout << cg_length/cgs_length << std::endl; + + std::cout << esu::gram*pow<2>(esu::centimeter/esu::second)/esu::esu << std::endl; + std::cout << esu::statvolt/esu::centimeter << std::endl; + + quantity<esu::charge> q1 = 1.0*esu::esu, + q2 = 2.0*esu::esu; + quantity<esu::length> r = 1.0*esu::centimeter; + + std::cout << coulombLaw(q1,q2,r) << std::endl; + std::cout << coulombLaw(q1,q2,cgs_length) << std::endl; + + return 0; +} +*/ |