[#bitset_detail-MultiIntBitSet-operator_or_eq]
= xref:bitset_detail.adoc[bitset_detail]::xref:bitset_detail/MultiIntBitSet.adoc[MultiIntBitSet]::operator|=
:relfileprefix: ../../
:mrdocs:

Set this object's bits to be the binary OR between respective bits from this and a.

== Synopsis

Declared in `<util/bitset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:bitset_detail/MultiIntBitSet.adoc[MultiIntBitSet]&
operator|=(xref:bitset_detail/MultiIntBitSet.adoc[MultiIntBitSet] const& a) noexcept;
----

== Return Value

A reference to this bitset.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| The bitset to OR into this one.
|===


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