Reviewed-by: Rich Salz <rsalz@akamai.com>
RT #4100, MR #1264
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_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>.
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>.