1 /* $NetBSD: bn_mp_init.c,v 1.1.1.2 2014/04/24 12:45:31 pettai Exp $ */ 2 3 #include <tommath.h> 4 #ifdef BN_MP_INIT_C 5 /* LibTomMath, multiple-precision integer library -- Tom St Denis 6 * 7 * LibTomMath is a library that provides multiple-precision 8 * integer arithmetic as well as number theoretic functionality. 9 * 10 * The library was designed directly after the MPI library by 11 * Michael Fromberger but has been written from scratch with 12 * additional optimizations in place. 13 * 14 * The library is free for all purposes without any express 15 * guarantee it works. 16 * 17 * Tom St Denis, tomstdenis@gmail.com, http://libtom.org 18 */ 19 20 /* init a new mp_int */ mp_init(mp_int * a)21int mp_init (mp_int * a) 22 { 23 int i; 24 25 /* allocate memory required and clear it */ 26 a->dp = OPT_CAST(mp_digit) XMALLOC (sizeof (mp_digit) * MP_PREC); 27 if (a->dp == NULL) { 28 return MP_MEM; 29 } 30 31 /* set the digits to zero */ 32 for (i = 0; i < MP_PREC; i++) { 33 a->dp[i] = 0; 34 } 35 36 /* set the used to zero, allocated digits to the default precision 37 * and sign to positive */ 38 a->used = 0; 39 a->alloc = MP_PREC; 40 a->sign = MP_ZPOS; 41 42 return MP_OKAY; 43 } 44 #endif 45 46 /* Source: /cvs/libtom/libtommath/bn_mp_init.c,v */ 47 /* Revision: 1.4 */ 48 /* Date: 2006/12/28 01:25:13 */ 49