comparison bn_mp_init.c @ 282:91fbc376f010 libtommath-orig libtommath-0.35

Import of libtommath 0.35 From ltm-0.35.tar.bz2 SHA1 of 3f193dbae9351e92d02530994fa18236f7fde01c
author Matt Johnston <matt@ucc.asn.au>
date Wed, 08 Mar 2006 13:16:18 +0000
parents
children 97db060d0ef5
comparison
equal deleted inserted replaced
-1:000000000000 282:91fbc376f010
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, [email protected], http://math.libtomcrypt.org
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