[#BloombergLP-bdlat_EnumFunctions-bdlat_enumIsFallback]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlat_EnumFunctions.adoc[bdlat_EnumFunctions]::bdlat_enumIsFallback
:relfileprefix: ../../
:mrdocs:

Return `true` if the specified `value` is equal to a fallback enumerator, and `false` otherwise. The behavior is undefined if this default implementation of `bdlat_enumIsFallback` is instantiated with a template parameter `TYPE` such that `bdlat_HasFallbackEnumerator<TYPE>` is `false`. Note that this is a customization point function and should not be called directly by user code. Use `bdlat_EnumFunctions::isFallback` instead.

== Synopsis

Declared in `<bdlat_enumfunctions.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class TYPE>
bool
bdlat_enumIsFallback(TYPE const& value);
----


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