1 /* $NetBSD: bn_mp_clear.c,v 1.1.1.2 2014/04/24 12:45:31 pettai Exp $ */
2
3 #include <tommath.h>
4 #ifdef BN_MP_CLEAR_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 /* clear one (frees) */
21 void
mp_clear(mp_int * a)22 mp_clear (mp_int * a)
23 {
24 int i;
25
26 /* only do anything if a hasn't been freed previously */
27 if (a->dp != NULL) {
28 /* first zero the digits */
29 for (i = 0; i < a->used; i++) {
30 a->dp[i] = 0;
31 }
32
33 /* free ram */
34 XFREE(a->dp);
35
36 /* reset members to make debugging easier */
37 a->dp = NULL;
38 a->alloc = a->used = 0;
39 a->sign = MP_ZPOS;
40 }
41 }
42 #endif
43
44 /* Source: /cvs/libtom/libtommath/bn_mp_clear.c,v */
45 /* Revision: 1.4 */
46 /* Date: 2006/12/28 01:25:13 */
47