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

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
using _base_ = /* implementation-defined */;
----


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