1*86d7f5d3SJohn Marino /* mpn_random -- Generate random numbers.
2*86d7f5d3SJohn Marino
3*86d7f5d3SJohn Marino Copyright 2001, 2002 Free Software Foundation, Inc.
4*86d7f5d3SJohn Marino
5*86d7f5d3SJohn Marino This file is part of the GNU MP Library.
6*86d7f5d3SJohn Marino
7*86d7f5d3SJohn Marino The GNU MP Library is free software; you can redistribute it and/or modify
8*86d7f5d3SJohn Marino it under the terms of the GNU Lesser General Public License as published by
9*86d7f5d3SJohn Marino the Free Software Foundation; either version 3 of the License, or (at your
10*86d7f5d3SJohn Marino option) any later version.
11*86d7f5d3SJohn Marino
12*86d7f5d3SJohn Marino The GNU MP Library is distributed in the hope that it will be useful, but
13*86d7f5d3SJohn Marino WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14*86d7f5d3SJohn Marino or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
15*86d7f5d3SJohn Marino License for more details.
16*86d7f5d3SJohn Marino
17*86d7f5d3SJohn Marino You should have received a copy of the GNU Lesser General Public License
18*86d7f5d3SJohn Marino along with the GNU MP Library. If not, see http://www.gnu.org/licenses/. */
19*86d7f5d3SJohn Marino
20*86d7f5d3SJohn Marino #include "gmp.h"
21*86d7f5d3SJohn Marino #include "gmp-impl.h"
22*86d7f5d3SJohn Marino
23*86d7f5d3SJohn Marino void
mpn_random(mp_ptr ptr,mp_size_t size)24*86d7f5d3SJohn Marino mpn_random (mp_ptr ptr, mp_size_t size)
25*86d7f5d3SJohn Marino {
26*86d7f5d3SJohn Marino gmp_randstate_ptr rands;
27*86d7f5d3SJohn Marino
28*86d7f5d3SJohn Marino /* FIXME: Is size==0 supposed to be allowed? */
29*86d7f5d3SJohn Marino ASSERT (size >= 0);
30*86d7f5d3SJohn Marino
31*86d7f5d3SJohn Marino if (size == 0)
32*86d7f5d3SJohn Marino return;
33*86d7f5d3SJohn Marino
34*86d7f5d3SJohn Marino rands = RANDS;
35*86d7f5d3SJohn Marino _gmp_rand (ptr, rands, size * GMP_NUMB_BITS);
36*86d7f5d3SJohn Marino
37*86d7f5d3SJohn Marino /* Make sure the most significant limb is non-zero. */
38*86d7f5d3SJohn Marino while (ptr[size-1] == 0)
39*86d7f5d3SJohn Marino _gmp_rand (&ptr[size-1], rands, GMP_NUMB_BITS);
40*86d7f5d3SJohn Marino }
41