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

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

RT #4100, MR #1264
This commit is contained in:
Kurt Roeckx 2015-10-19 22:26:59 +02:00
parent 9f6795e7d2
commit 32c748140f
1 changed files with 1 additions and 0 deletions

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@ -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>.