boost::units::dim< T, V > Struct Template Reference

Dimension tag/exponent pair for a single fundamental dimension. More...

#include <units_fwd.hpp>

Public Types
typedef dim	type
typedef detail::dim_tag	tag
typedef T	tag_type
typedef V	value_type

Detailed Description

template<typename T, typename V>
struct boost::units::dim< T, V >

Dimension tag/exponent pair for a single fundamental dimension.

The dim class represents a single dimension tag/dimension exponent pair. That is, dim<tag_type,value_type> is a pair where tag_type represents the fundamental dimension being represented and value_type represents the exponent of that fundamental dimension as a static_rational. tag_type must be a derived from a specialization of base_dimension. Specialization of the following Boost.MPL metafunctions are provided

- @c mpl::plus for two @c dims
- @c mpl::minus for two @c dims
- @c mpl::negate for a @c dim

These metafunctions all operate on the exponent, and require that the dim operands have the same base dimension tag. In addition, multiplication and division by static_rational is supported.

- @c mpl::times for a @c static_rational and a @c dim in either order
- @c mpl::divides for a @c static_rational and a @c dim in either order

These metafunctions likewise operate on the exponent only.

Member Typedef Documentation

template<typename T , typename V >

typedef detail::dim_tag boost::units::dim< T, V >::tag

template<typename T , typename V >

typedef T boost::units::dim< T, V >::tag_type

template<typename T , typename V >

typedef dim boost::units::dim< T, V >::type

template<typename T , typename V >

typedef V boost::units::dim< T, V >::value_type

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The documentation for this struct was generated from the following file:

• boost_1_57_0/boost/units/dim.hpp