[#OBJ_bsearch_]
= OBJ_bsearch_
:mrdocs:

Binary‐search a sorted array of fixed‐size elements using a comparator.

== Synopsis

Declared in `<openssl/objects.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void const*
OBJ_bsearch_(
    void const* key,
    void const* base,
    int num,
    int size,
    int(* cmp)(void const*, void const*));
----

== Description

Used internally by the OBJ_bsearch_* helpers; prefer those type‐safe wrappers.

== Return Value

Pointer to the matching element, or NULL if not found.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *key*
| Pointer to the search key passed as the first argument to `cmp.`
| *base*
| Base address of the sorted array.
| *num*
| Number of elements in the array.
| *size*
| Size of each element in bytes.
| *cmp*
| Comparison callback returning negative, zero, or positive like strcmp.
|===


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