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comparison bn_mp_clear.c @ 2:86e0b50a9b58 libtommath-orig ltm-0.30-orig

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ltm 0.30 orig import
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:25:22 +0000
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children d29b64170cf0
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-1:000000000000 2:86e0b50a9b58
1 /* LibTomMath, multiple-precision integer library -- Tom St Denis
2 *
3 * LibTomMath is a library that provides multiple-precision
4 * integer arithmetic as well as number theoretic functionality.
5 *
6 * The library was designed directly after the MPI library by
7 * Michael Fromberger but has been written from scratch with
8 * additional optimizations in place.
9 *
10 * The library is free for all purposes without any express
11 * guarantee it works.
12 *
13 * Tom St Denis, [email protected], http://math.libtomcrypt.org
14 */
15 #include <tommath.h>
16
17 /* clear one (frees) */
18 void
19 mp_clear (mp_int * a)
20 {
21 /* only do anything if a hasn't been freed previously */
22 if (a->dp != NULL) {
23 /* first zero the digits */
24 memset (a->dp, 0, sizeof (mp_digit) * a->used);
25
26 /* free ram */
27 XFREE(a->dp);
28
29 /* reset members to make debugging easier */
30 a->dp = NULL;
31 a->alloc = a->used = 0;
32 a->sign = MP_ZPOS;
33 }
34 }