[#OSSL_PARAM_BLD_push_ulong]
= OSSL&lowbar;PARAM&lowbar;BLD&lowbar;push&lowbar;ulong
:mrdocs:

Append an unsigned long parameter to a builder&period;

== Synopsis

Declared in `&lt;openssl&sol;param&lowbar;build&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
OSSL&lowbar;PARAM&lowbar;BLD&lowbar;push&lowbar;ulong(
    xref:OSSL_PARAM_BLD.adoc[OSSL&lowbar;PARAM&lowbar;BLD]* bld,
    char const* key,
    unsigned long val);
----

== Return Value

1 on success, or 0 on error&period;

== Parameters

[cols="1,4"]
|===
| Name| Description
| *bld*
| Parameter builder&period;
| *key*
| Parameter name string&period;
| *val*
| Value to store&period;
|===


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