[#mp_units-PointOrigin]
= xref:mp_units.adoc[mp_units]::PointOrigin
:relfileprefix: ../
:mrdocs:

A concept matching all quantity point origins in the library

== Synopsis

Declared in `<mp‐units/framework/quantity_point_concepts.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<typename T>
concept PointOrigin = std::derived_from<T, detail::point_origin_interface> && detail::SymbolicConstant<T>;
----

== Description

Satisfied by either quantity points or by all types derived from `absolute_point_origin` class template.


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