1#include <tommath.h> 2#ifdef BN_MP_CLEAR_C 3/* LibTomMath, multiple-precision integer library -- Tom St Denis 4 * 5 * LibTomMath is a library that provides multiple-precision 6 * integer arithmetic as well as number theoretic functionality. 7 * 8 * The library was designed directly after the MPI library by 9 * Michael Fromberger but has been written from scratch with 10 * additional optimizations in place. 11 * 12 * The library is free for all purposes without any express 13 * guarantee it works. 14 * 15 * Tom St Denis, tomstdenis@gmail.com, http://libtom.org 16 */ 17 18/* clear one (frees) */ 19void 20mp_clear (mp_int * a) 21{ 22 int i; 23 24 /* only do anything if a hasn't been freed previously */ 25 if (a->dp != NULL) { 26 /* first zero the digits */ 27 for (i = 0; i < a->used; i++) { 28 a->dp[i] = 0; 29 } 30 31 /* free ram */ 32 XFREE(a->dp); 33 34 /* reset members to make debugging easier */ 35 a->dp = NULL; 36 a->alloc = a->used = 0; 37 a->sign = MP_ZPOS; 38 } 39} 40#endif 41 42/* $Source: /cvs/libtom/libtommath/bn_mp_clear.c,v $ */ 43/* $Revision: 1.4 $ */ 44/* $Date: 2006/12/28 01:25:13 $ */ 45