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comparison bn_mp_init.c @ 1:22d5cf7d4b1a libtommath

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Renaming branch
author Matt Johnston <matt@ucc.asn.au>
date Mon, 31 May 2004 18:23:46 +0000
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-1:000000000000 1:22d5cf7d4b1a
1 /* LibTomMath, multiple-precision integer library -- Tom St Denis
2 *
3 * LibTomMath is a library that provides multiple-precision
4 * integer arithmetic as well as number theoretic functionality.
5 *
6 * The library was designed directly after the MPI library by
7 * Michael Fromberger but has been written from scratch with
8 * additional optimizations in place.
9 *
10 * The library is free for all purposes without any express
11 * guarantee it works.
12 *
13 * Tom St Denis, [email protected], http://math.libtomcrypt.org
14 */
15 #include <tommath.h>
16
17 /* init a new bigint */
18 int mp_init (mp_int * a)
19 {
20 /* allocate memory required and clear it */
21 a->dp = OPT_CAST(mp_digit) XCALLOC (sizeof (mp_digit), MP_PREC);
22 if (a->dp == NULL) {
23 return MP_MEM;
24 }
25
26 /* set the used to zero, allocated digits to the default precision
27 * and sign to positive */
28 a->used = 0;
29 a->alloc = MP_PREC;
30 a->sign = MP_ZPOS;
31
32 return MP_OKAY;
33 }