1 #include <tommath.h> 2 #ifdef BN_MP_INIT_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 (at) gmail.com, http://math.libtomcrypt.com 16 */ 17 18 /* init a new mp_int */ 19 int mp_init (mp_int * a) 20 { 21 int i; 22 23 /* allocate memory required and clear it */ 24 a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * MP_PREC); 25 if (a->dp == NULL) { 26 return MP_MEM; 27 } 28 29 /* set the digits to zero */ 30 for (i = 0; i < MP_PREC; i++) { 31 a->dp[i] = 0; 32 } 33 34 /* set the used to zero, allocated digits to the default precision 35 * and sign to positive */ 36 a->used = 0; 37 a->alloc = MP_PREC; 38 a->sign = MP_ZPOS; 39 40 return MP_OKAY; 41 } 42 #endif 43 44 /* $Source: /cvs/libtom/libtommath/bn_mp_init.c,v $ */ 45 /* $Revision: 1.3 $ */ 46 /* $Date: 2006/03/31 14:18:44 $ */ 47
