From: Kurt Roeckx <kurt@roeckx.be>
Date: Mon, 19 Oct 2015 20:26:59 +0000 (+0200)
Subject: BN_sub: document that r might be the same as a or b
X-Git-Tag: OpenSSL_1_1_0-pre1~258
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=32c748140ff94016011efc206a3709e4187ce40b;p=openssl

BN_sub: document that r might be the same as a or b

Reviewed-by: Rich Salz <rsalz@akamai.com>

RT #4100, MR #1264
---

diff --git a/doc/crypto/BN_add.pod b/doc/crypto/BN_add.pod
index 942048c10d..3ad227458d 100644
--- a/doc/crypto/BN_add.pod
+++ b/doc/crypto/BN_add.pod
@@ -49,6 +49,7 @@ BN_add() adds I<a> and I<b> and places the result in I<r> (C<r=a+b>).
 I<r> may be the same B<BIGNUM> as I<a> or I<b>.
 
 BN_sub() subtracts I<b> from I<a> and places the result in I<r> (C<r=a-b>).
+I<r> may be the same B<BIGNUM> as I<a> or I<b>.
 
 BN_mul() multiplies I<a> and I<b> and places the result in I<r> (C<r=a*b>).
 I<r> may be the same B<BIGNUM> as I<a> or I<b>.