[#mp_units-quantity_point-08-numerical_value_in-08]
= xref:mp_units.adoc[mp_units]::xref:mp_units/quantity_point-08.adoc[quantity_point]::numerical_value_in
:relfileprefix: ../../
:mrdocs:

`numerical_value_in` overloads

== Synopses

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

Returns the numerical value of this quantity point on the scale of another unit, implicitly convertible to `rep`.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<xref:mp_units/UnitOf.adoc[UnitOf<quantity_spec>] U>
requires (PO == default_point_origin(R)) && detail::ImplicitScaling<unit, U{}, rep>
[[nodiscard]]
constexpr
xref:mp_units/RepresentationOf.adoc[RepresentationOf<quantity_spec>] auto
xref:mp_units/quantity_point-08/numerical_value_in-04.adoc[numerical_value_in](U u) const noexcept;
----

[.small]#xref:mp_units/quantity_point-08/numerical_value_in-04.adoc[_» more..._]#

Returns the numerical value of this quantity point on the scale of another unit, applying an explicit rounding policy.


[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    xref:mp_units/UnitOf.adoc[UnitOf<quantity_spec>] U,
    xref:mp_units/RoundingPolicy.adoc[RoundingPolicy] Policy>
requires (PO == default_point_origin(R)) && detail::ExplicitlyCastable<unit, U{}, rep> &&
            detail::ValidRoundingPolicyFor<Policy, rep, rep>
[[nodiscard]]
constexpr
xref:mp_units/RepresentationOf.adoc[RepresentationOf<quantity_spec>] auto
xref:mp_units/quantity_point-08/numerical_value_in-0e.adoc[numerical_value_in](
    U u,
    Policy policy) const noexcept;
----

[.small]#xref:mp_units/quantity_point-08/numerical_value_in-0e.adoc[_» more..._]#

== Return Value

* The numerical value expressed in `u`.
* The numerical value expressed in `u`, measured from the default point origin.

[NOTE]
====
The return value https://en.cppreference.com/cpp/language/attributes/nodiscard[should not be discarded^].
====
== Parameters

[cols="1,4"]
|===
| Name| Description
| *u*
| the target unit, measured from the default point origin of that unit
| *policy*
| the rounding policy to apply when the conversion is not exact
|===


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