[#mp_units-pow-05]
= xref:mp_units.adoc[mp_units]::pow
:relfileprefix: ../
:mrdocs:

Computes the value of a quantity raised to the `Num/Den` power

== Synopsis

Declared in `<mp‐units/math.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    intmax_t Num,
    intmax_t Den = 1,
    auto R,
    typename Rep>
requires (Den != 0) && requires(Rep v) {
    representation_values<Rep>::one();
    requires requires { pow(v, 1.0); } || requires { std::pow(v, 1.0); };
  }
[[nodiscard]]
constexpr
xref:mp_units/quantity-01.adoc[quantity<pow<Num, Den>(R), Rep>]
pow(xref:mp_units/quantity-01.adoc[quantity<R, Rep>] const& q) noexcept;
----

== Description

Both the quantity value and its quantity specification are the base of the operation.

== Return Value

Quantity The result of computation

== Template Parameters

[cols=2]
|===
| Name
| Description
| *Num*
| Exponent numerator
| *Den*
| Exponent denominator
|===

== Parameters

[cols=2]
|===
| Name
| Description
| *q*
| Quantity being the base of the operation
|===


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