[#BN_mod_mul_reciprocal]
= BN_mod_mul_reciprocal
:mrdocs:

Multiply then reduce using a reciprocal context: r = (x * y) mod m (m from `recp).`

== Synopsis

Declared in `<openssl/bn.h>`

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

== Return Value

1 on success, or 0 on failure.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *r*
| Destination for the product modulo the reciprocal modulus.
| *x*
| First multiplicand.
| *y*
| Second multiplicand.
| *recp*
| Reciprocal context previously set with BN_RECP_CTX_set().
| *ctx*
| BN_CTX for temporaries.
|===


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