[#BN_mul_word]
= BN_mul_word
:mrdocs:

Multiply BIGNUM `a` by word `w` in place: a := a * w.

== Synopsis

Declared in `<openssl/bn.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int
BN_mul_word(
    xref:BIGNUM.adoc[BIGNUM]* a,
    unsigned long w);
----

== Return Value

1 on success, or 0 on error.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| Value to scale (updated in place).
| *w*
| Multiplier word.
|===


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