tommath/bn_mp_clear.c

45 lines
1021 B
C
Raw Normal View History

2004-10-29 18:07:18 -04:00
#include <tommath.h>
#ifdef BN_MP_CLEAR_C
2003-02-28 11:08:34 -05:00
/* LibTomMath, multiple-precision integer library -- Tom St Denis
*
2003-08-04 21:24:44 -04:00
* LibTomMath is a library that provides multiple-precision
2003-02-28 11:08:34 -05:00
* integer arithmetic as well as number theoretic functionality.
*
2003-08-04 21:24:44 -04:00
* The library was designed directly after the MPI library by
* Michael Fromberger but has been written from scratch with
2003-02-28 11:08:34 -05:00
* additional optimizations in place.
*
* The library is free for all purposes without any express
* guarantee it works.
*
2003-03-12 21:11:11 -05:00
* Tom St Denis, tomstdenis@iahu.ca, http://math.libtomcrypt.org
2003-02-28 11:08:34 -05:00
*/
/* clear one (frees) */
void
mp_clear (mp_int * a)
{
2004-08-09 18:15:59 -04:00
int i;
2003-08-04 21:24:44 -04:00
/* only do anything if a hasn't been freed previously */
2003-02-28 11:08:34 -05:00
if (a->dp != NULL) {
/* first zero the digits */
2004-08-09 18:15:59 -04:00
for (i = 0; i < a->used; i++) {
a->dp[i] = 0;
}
2003-02-28 11:08:34 -05:00
/* free ram */
2003-12-24 13:59:22 -05:00
XFREE(a->dp);
2003-02-28 11:08:34 -05:00
/* reset members to make debugging easier */
2003-07-12 10:31:43 -04:00
a->dp = NULL;
2003-02-28 11:08:34 -05:00
a->alloc = a->used = 0;
2003-08-04 21:24:44 -04:00
a->sign = MP_ZPOS;
2003-02-28 11:08:34 -05:00
}
}
2004-10-29 18:07:18 -04:00
#endif
2005-08-01 12:37:28 -04:00
/* $Source$ */
/* $Revision$ */
/* $Date$ */