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annotate libtommath/bn_mp_clear.c @ 447:278805938dcf

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Patch from Nicolai Ehemann to try binding before going to the background, so that if it exits early (because something's already listening etc) then it will return an exitcode of 1.
author Matt Johnston <matt@ucc.asn.au>
date Thu, 19 Jul 2007 15:54:18 +0000
parents 5ff8218bcee9
children eebff2079bdc
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1 #include <tommath.h>
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2 #ifdef BN_MP_CLEAR_C
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3 /* LibTomMath, multiple-precision integer library -- Tom St Denis
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4 *
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5 * LibTomMath is a library that provides multiple-precision
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6 * integer arithmetic as well as number theoretic functionality.
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7 *
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8 * The library was designed directly after the MPI library by
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9 * Michael Fromberger but has been written from scratch with
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10 * additional optimizations in place.
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11 *
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12 * The library is free for all purposes without any express
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13 * guarantee it works.
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14 *
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15 * Tom St Denis, [email protected], http://math.libtomcrypt.com
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16 */
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18 /* clear one (frees) */
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19 void
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20 mp_clear (mp_int * a)
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21 {
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22 volatile mp_digit *p;
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23 int len;
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25 /* only do anything if a hasn't been freed previously */
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26 if (a->dp != NULL) {
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27 /* first zero the digits */
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28 len = a->alloc;
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29 p = a->dp;
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30 while (len--) {
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31 *p++ = 0;
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32 }
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34 /* free ram */
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35 XFREE(a->dp);
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37 /* reset members to make debugging easier */
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38 a->dp = NULL;
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39 a->alloc = a->used = 0;
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40 a->sign = MP_ZPOS;
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41 }
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42 }
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43 #endif
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44
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45 /* $Source: /cvs/libtom/libtommath/bn_mp_clear.c,v $ */
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46 /* $Revision: 1.3 $ */
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47 /* $Date: 2006/03/31 14:18:44 $ */