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

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated("2.3.0: Use `mag<pi>` instead")]]
inline constexpr xref:mp_units/UnitMagnitude.adoc[UnitMagnitude] auto mag_pi = mag<pi_c>;
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]: 2.3.0: Use `mag<pi>` instead. Use of this entity is allowed but discouraged.
====

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