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