[#LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE]
= LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE
:mrdocs:

LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE() pulls the operator overloads used by LLVM_MARK_AS_BITMASK_ENUM into the current namespace.

== Synopsis

Declared in `<llvm/ADT/BitmaskEnum.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
#define LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE()

----

== Description

Suppose you have an enum foo::bar::MyEnum. Before using LLVM_MARK_AS_BITMASK_ENUM on MyEnum, you must put LLVM_ENABLE_BITMASK_ENUMS_IN_NAMESPACE() somewhere inside namespace foo or namespace foo::bar. This allows the relevant operator overloads to be found by ADL.

You don't need to use this macro in namespace llvm; it's done at the bottom of this file.


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