1 /* $NetBSD: bn_mp_abs.c,v 1.1.1.2 2014/04/24 12:45:31 pettai Exp $ */
2
3 #include <tommath.h>
4 #ifdef BN_MP_ABS_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 /* b = |a|
21 *
22 * Simple function copies the input and fixes the sign to positive
23 */
24 int
mp_abs(mp_int * a,mp_int * b)25 mp_abs (mp_int * a, mp_int * b)
26 {
27 int res;
28
29 /* copy a to b */
30 if (a != b) {
31 if ((res = mp_copy (a, b)) != MP_OKAY) {
32 return res;
33 }
34 }
35
36 /* force the sign of b to positive */
37 b->sign = MP_ZPOS;
38
39 return MP_OKAY;
40 }
41 #endif
42
43 /* Source: /cvs/libtom/libtommath/bn_mp_abs.c,v */
44 /* Revision: 1.4 */
45 /* Date: 2006/12/28 01:25:13 */
46