[#OPENSSL_LH_insert]
= OPENSSL_LH_insert
:mrdocs:

Insert `data` into an LHASH, replacing any equal existing element.

== Synopsis

Declared in `<openssl/lhash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
void*
OPENSSL_LH_insert(
    xref:OPENSSL_LHASH.adoc[OPENSSL_LHASH]* lh,
    void* data);
----

== Return Value

Previously stored equal element, or NULL if none / on error (check ERR).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lh*
| Hash table.
| *data*
| Element to insert (ownership typically remains with the table).
|===


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