Mercurial > dropbear
comparison libtommath/bn_mp_init.c @ 293:9d110777f345 contrib-blacklist
propagate from branch 'au.asn.ucc.matt.dropbear' (head 7ad1775ed65e75dbece27fe6b65bf1a234db386a)
to branch 'au.asn.ucc.matt.dropbear.contrib.blacklist' (head 1d86a4f0a401cc68c2670d821a2f6366c37af143)
author | Matt Johnston <matt@ucc.asn.au> |
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date | Fri, 10 Mar 2006 06:31:29 +0000 |
parents | eed26cff980b |
children | 5ff8218bcee9 |
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247:c07de41b53d7 | 293:9d110777f345 |
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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 |