[#BN_kronecker]
= BN_kronecker
:mrdocs:

Compute the Kronecker symbol (a/b), a generalization of the Jacobi symbol.

== Synopsis

Declared in `<openssl/bn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BN_kronecker(
    xref:BIGNUM.adoc[BIGNUM] const* a,
    xref:BIGNUM.adoc[BIGNUM] const* b,
    xref:BN_CTX.adoc[BN_CTX]* ctx);
----

== Return Value

‐1, 0, or 1 for a valid symbol, or ‐2 on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| Numerator.
| *b*
| Denominator.
| *ctx*
| BN_CTX scratch space.
|===


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