[#ERR_GET_LIB]
= ERR_GET_LIB
:mrdocs:

Extract the library number from a packed OpenSSL error code.

== Synopsis

Declared in `<openssl/err.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[maybe_unused]]
static
int
ERR_GET_LIB(unsigned long errcode);
----

[NOTE]
====
This entity https://en.cppreference.com/cpp/language/attributes/maybe_unused[may be unused^], and the compiler will not warn about it.
====
== Return Value

ERR_LIB_* library number, or ERR_LIB_SYS for a recorded system error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *errcode*
| Error code as returned by ERR_get_error() or ERR_peek_error().
|===


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