[#BloombergLP-bslmf-InvokeResult_FunctorImp-06-checkVolatile-04]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslmf.adoc[bslmf]::xref:BloombergLP/bslmf/InvokeResult_FunctorImp-06.adoc[InvokeResult_FunctorImp<bslmf::VoidType<decltype(InvokeResult_ImpUtils::myDeclval<t_FN>()(
                    InvokeResult_ImpUtils::myDeclval<t_ARGTYPES>()...))>::type, t_FN, t_ARGTYPES...>]::checkVolatile
:relfileprefix: ../../../
:mrdocs:

Return `bslmf::Tag<true>()` if the argument is `const volatile`‐qualified.

== Synopsis

Declared in `<bslmf_invokeresult.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class t_TP>
static
xref:BloombergLP/bslmf/Tag-0b.adoc[bslmf::Tag<true>]
checkVolatile(t_TP const volatile& arg);
----

== Parameters

[cols="1,4"]
|===
| Name| Description
| *arg*
| expression whose volatile qualification is being tested
|===


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