:relfileprefix: ../../../
[#BFA8CE71977DB05A528A33A6DE31FA3E291895F3]

= Function ipv4_address::is_unspecified

pass:v,q[Return true if the address is unspecified]


== Synopsis

Declared in header `</boost/url/ipv4_address.hpp#L232[boost/url/ipv4_address.hpp,window=blank_]>`

[source,cpp,subs="verbatim,macros,-callouts"]
----
bool
is_unspecified() const noexcept;
----