[#ASN1_BIT_STRING_get_bit]
= ASN1_BIT_STRING_get_bit
:mrdocs:

Test whether bit `n` is set in an ASN.1 BIT STRING.

== Synopsis

Declared in `<openssl/asn1.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
ASN1_BIT_STRING_get_bit(
    xref:ASN1_BIT_STRING.adoc[ASN1_BIT_STRING] const* a,
    int n);
----

== Return Value

1 if the bit is set, or 0 if clear / out of range / `a` is NULL.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| Bit string to query; NULL or short strings are treated as clear.
| *n*
| Zero‐based bit index.
|===


[.small]#Created with https://www.mrdocs.com[MrDocs]#