[#BN_get_params]
= BN_get_params
:mrdocs:

Return a legacy BN library tuning parameter (deprecated no‐op on modern OpenSSL).

== Synopsis

Declared in `<openssl/bn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
[[deprecated]]
int
BN_get_params(int which);
----

[WARNING]
====
https://en.cppreference.com/cpp/language/attributes/deprecated[Deprecated^]. Use of this entity is allowed but discouraged.
====
== Return Value

Stored parameter value (typically 0 in current builds).

== Parameters

[cols="1,4"]
|===
| Name| Description
| *which*
| Selector historically meaning 0=mul, 1=high, 2=low, 3=mont.
|===


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