Return true if, for the specified v, CopyMoveState::get(v) includes the e_UNKNOWN bit; otherwise return 'false.
true
v
CopyMoveState::get(v)
e_UNKNOWN
Declared in <bsltf_copymovestate.h>
<bsltf_copymovestate.h>
template<class TYPE> static bool isUnknown(TYPE const& v);