[#mp_units-utility-operator_plus-0d]
= xref:mp_units.adoc[mp_units]::xref:mp_units/utility.adoc[utility]::operator+
:relfileprefix: ../../
:mrdocs:

Adds a floating‐point value to a `safe_int`.

== Synopsis

Declared in `<mp‐units/utility/safe_int.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
constexpr
auto
operator+(
    xref:mp_units/utility/safe_int-07.adoc[safe_int] lhs,
    U rhs)
requires requires { static_cast<U>(lhs.value_) + rhs; };
----

== Return Value

the sum of the wrapped value and `rhs`

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

[cols="1,4"]
|===
| Name| Description
| *U*
| a floating‐point‐like type (`treat_as_floating_point<U>` is `true`)
|===

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lhs*
| the `safe_int` operand
| *rhs*
| the floating‐point value to add
|===


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