1/* gmp_randinit (state, algorithm, ...) -- Initialize a random state.
2
3Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
4
5This file is part of the GNU MP Library.
6
7The GNU MP Library is free software; you can redistribute it and/or modify
8it under the terms of the GNU Lesser General Public License as published by
9the Free Software Foundation; either version 3 of the License, or (at your
10option) any later version.
11
12The GNU MP Library is distributed in the hope that it will be useful, but
13WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
15License for more details.
16
17You should have received a copy of the GNU Lesser General Public License
18along with the GNU MP Library.  If not, see http://www.gnu.org/licenses/.  */
19
20#include "config.h"
21
22#include <stdio.h> /* for NULL */
23
24#if HAVE_STDARG
25#include <stdarg.h>
26#else
27#include <varargs.h>
28#endif
29
30#include "gmp.h"
31#include "gmp-impl.h"
32
33void
34#if HAVE_STDARG
35gmp_randinit (gmp_randstate_t rstate,
36	      gmp_randalg_t alg,
37	      ...)
38#else
39gmp_randinit (va_alist)
40     va_dcl
41#endif
42{
43  va_list ap;
44#if HAVE_STDARG
45  va_start (ap, alg);
46#else
47  __gmp_randstate_struct *rstate;
48  gmp_randalg_t alg;
49  va_start (ap);
50  rstate = va_arg (ap, __gmp_randstate_struct *);
51  alg = va_arg (ap, gmp_randalg_t);
52#endif
53
54  switch (alg) {
55  case GMP_RAND_ALG_LC:
56    if (! gmp_randinit_lc_2exp_size (rstate, va_arg (ap, unsigned long)))
57      gmp_errno |= GMP_ERROR_INVALID_ARGUMENT;
58    break;
59  default:
60    gmp_errno |= GMP_ERROR_UNSUPPORTED_ARGUMENT;
61    break;
62  }
63  va_end (ap);
64}
65