[#BN_RECP_CTX_set]
= BN_RECP_CTX_set
:mrdocs:

Configure a reciprocal context for repeated division by modulus `rdiv.`

== Synopsis

Declared in `<openssl/bn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BN_RECP_CTX_set(
    xref:BN_RECP_CTX.adoc[BN_RECP_CTX]* recp,
    xref:BIGNUM.adoc[BIGNUM] const* rdiv,
    xref:BN_CTX.adoc[BN_CTX]* ctx);
----

== Return Value

1 on success, or 0 on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *recp*
| Context to initialize.
| *rdiv*
| Modulus / divisor used for subsequent reciprocal operations.
| *ctx*
| BN_CTX scratch space.
|===


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