[#OPENSSL_LH_set_thunks]
= OPENSSL_LH_set_thunks
:mrdocs:

Install type‐safe thunk adapters used by DEFINE_LHASH_OF wrappers on `lh.`

== Synopsis

Declared in `<openssl/lhash.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
xref:OPENSSL_LHASH.adoc[OPENSSL_LHASH]*
OPENSSL_LH_set_thunks(
    xref:OPENSSL_LHASH.adoc[OPENSSL_LHASH]* lh,
    xref:OPENSSL_LH_HASHFUNCTHUNK.adoc[OPENSSL_LH_HASHFUNCTHUNK] hw,
    xref:OPENSSL_LH_COMPFUNCTHUNK.adoc[OPENSSL_LH_COMPFUNCTHUNK] cw,
    xref:OPENSSL_LH_DOALL_FUNC_THUNK.adoc[OPENSSL_LH_DOALL_FUNC_THUNK] daw,
    xref:OPENSSL_LH_DOALL_FUNCARG_THUNK.adoc[OPENSSL_LH_DOALL_FUNCARG_THUNK] daaw);
----

== Return Value

`lh` on success (for chaining), or NULL on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lh*
| Hash table to configure (often freshly created by OPENSSL_LH_new()).
| *hw*
| Thunk that applies a typed hash function to a void* element.
| *cw*
| Thunk that applies a typed compare function to void* elements.
| *daw*
| Thunk that applies a typed doall callback to a void* element.
| *daaw*
| Thunk that applies a typed doall‐arg callback to void* element/arg.
|===


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