1 /* $NetBSD: bn_mp_or.c,v 1.1.1.2 2014/04/24 12:45:31 pettai Exp $ */
2
3 #include <tommath.h>
4 #ifdef BN_MP_OR_C
5 /* LibTomMath, multiple-precision integer library -- Tom St Denis
6 *
7 * LibTomMath is a library that provides multiple-precision
8 * integer arithmetic as well as number theoretic functionality.
9 *
10 * The library was designed directly after the MPI library by
11 * Michael Fromberger but has been written from scratch with
12 * additional optimizations in place.
13 *
14 * The library is free for all purposes without any express
15 * guarantee it works.
16 *
17 * Tom St Denis, tomstdenis@gmail.com, http://libtom.org
18 */
19
20 /* OR two ints together */
mp_or(mp_int * a,mp_int * b,mp_int * c)21 int mp_or (mp_int * a, mp_int * b, mp_int * c)
22 {
23 int res, ix, px;
24 mp_int t, *x;
25
26 if (a->used > b->used) {
27 if ((res = mp_init_copy (&t, a)) != MP_OKAY) {
28 return res;
29 }
30 px = b->used;
31 x = b;
32 } else {
33 if ((res = mp_init_copy (&t, b)) != MP_OKAY) {
34 return res;
35 }
36 px = a->used;
37 x = a;
38 }
39
40 for (ix = 0; ix < px; ix++) {
41 t.dp[ix] |= x->dp[ix];
42 }
43 mp_clamp (&t);
44 mp_exch (c, &t);
45 mp_clear (&t);
46 return MP_OKAY;
47 }
48 #endif
49
50 /* Source: /cvs/libtom/libtommath/bn_mp_or.c,v */
51 /* Revision: 1.4 */
52 /* Date: 2006/12/28 01:25:13 */
53