[#absl-BitGenRef-2constructor-08]
= xref:absl.adoc[absl]::xref:absl/BitGenRef.adoc[BitGenRef]::BitGenRef
:relfileprefix: ../../
:mrdocs:

Constructs a reference to the given mockable bit generator.

== Synopsis

Declared in `<absl/random/bit_gen_ref.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename URBGRef,
    typename URBG = xref:absl/remove_cvref_t.adoc[absl::remove_cvref_t<URBGRef>]>
requires (!std::is_same_v<URBG, BitGenRef> &&
                 !std::is_base_of_v<BitGenRef, URBG> &&
                 !HasConversionOperator<URBG>::value &&
                 random_internal::is_urbg<URBG>::value &&
                 RandomMockingAccess::HasInvokeMock<URBG>::value)
BitGenRef(URBGRef&& gen);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *gen*
| The underlying bit generator to reference. It must outlive this reference.
|===


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