[#mp_units-inverse-09]
= xref:mp_units.adoc[mp_units]::inverse
:relfileprefix: ../
:mrdocs:

Computes the inverse of a quantity in a provided unit

== Synopsis

Declared in `<mp‐units/math.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    xref:mp_units/Unit.adoc[Unit] auto To,
    auto R,
    typename Rep>
[[nodiscard]]
constexpr
xref:mp_units/Quantity.adoc[Quantity] auto
inverse(xref:mp_units/quantity-01.adoc[quantity<R, Rep>] const& q)
requires (!detail::scaling_overflows_non_zero_values<Rep>(one / get_unit(R), To)) && requires {
    representation_values<Rep>::one();
    value_cast<To>(representation_values<Rep>::one() / q);
  };
----

== Parameters

[cols=2]
|===
| Name
| Description
| *q*
| A quantity
|===


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