[#OPENSSL_sk_compfunc]
= OPENSSL_sk_compfunc
:mrdocs:

Comparison callback used to order or search OPENSSL_STACK elements.

== Synopsis

Declared in `<openssl/stack.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
typedef int(* OPENSSL_sk_compfunc)(void const*, void const*);
----

== Return Value

Negative, zero, or positive like strcmp() when comparing `a` to `b.`

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| First element pointer (as stored in the stack).
| *b*
| Second element pointer (as stored in the stack).
|===


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