mp_units::quantity_like_traits

Provides support for external quantity-like types

Synopsis

Declared in <mp-units/framework/customization_points.h>

template<typename T>
struct quantity_like_traits;

Description

The type trait should provide the reference object, a type alias rep, and static member functions to_numerical_value(T) that returns the raw value of the quantity and from_numerical_value(rep) that returns T from rep.

If the following expression is true, the specified conversion will be explicit:

• explicit_import for the conversion from T to a quantity type,
• explicit_export for the conversion from a quantity type to T.

Usage example can be found in mp-units/systems/si/chrono.h header file.

Specializations

Name
quantity_like_traits<std::chrono::duration<Rep, Period>>

Template Parameters

Name	Description
T	the type to provide support for