Annotation of OpenXM_contrib/gmp/mpz/urandomb.c, Revision 1.1.1.1
1.1 maekawa 1: /* mpz_urandomb (rop, state, n) -- Generate a uniform pseudorandom
2: integer in the range 0 to 2^N - 1, inclusive, using STATE as the
3: random state previously initialized by a call to gmp_randinit().
4:
5: Copyright (C) 1999, 2000 Free Software Foundation, Inc.
6:
7: This file is part of the GNU MP Library.
8:
9: The GNU MP Library is free software; you can redistribute it and/or modify
10: it under the terms of the GNU Lesser General Public License as published by
11: the Free Software Foundation; either version 2.1 of the License, or (at your
12: option) any later version.
13:
14: The GNU MP Library is distributed in the hope that it will be useful, but
15: WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16: or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17: License for more details.
18:
19: You should have received a copy of the GNU Lesser General Public License
20: along with the GNU MP Library; see the file COPYING.LIB. If not, write to
21: the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
22: MA 02111-1307, USA. */
23:
24: #include "gmp.h"
25: #include "gmp-impl.h"
26:
27: void
28: #if __STDC__
29: mpz_urandomb (mpz_t rop, gmp_randstate_t rstate, unsigned long int nbits)
30: #else
31: mpz_urandomb (rop, rstate, nbits)
32: mpz_t rop;
33: gmp_randstate_t rstate;
34: unsigned long int nbits;
35: #endif
36: {
37: mp_ptr rp;
38: mp_size_t size;
39:
40: size = (nbits + BITS_PER_MP_LIMB - 1) / BITS_PER_MP_LIMB;
41: if (ALLOC (rop) < size)
42: _mpz_realloc (rop, size);
43:
44: rp = PTR (rop);
45:
46: _gmp_rand (rp, rstate, nbits);
47: MPN_NORMALIZE (rp, size);
48: SIZ (rop) = size;
49: }
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