[#mp_units-operator_plus-04]
= xref:mp_units.adoc[mp_units]::operator+
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<mp‐units/safe_int.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[nodiscard]]
constexpr
auto
operator+(
    U lhs,
    xref:mp_units/safe_int-09.adoc[safe_int] rhs)
requires requires { lhs + static_cast<U>(rhs.value_); };
----


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