Annotation of OpenXM_contrib/gmp/mpz/urandomb.c, Revision 1.1.1.2
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:
1.1.1.2 ! ohara 5: Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
1.1 maekawa 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
1.1.1.2 ! ohara 28: mpz_urandomb (mpz_ptr rop, gmp_randstate_t rstate, unsigned long int nbits)
1.1 maekawa 29: {
30: mp_ptr rp;
31: mp_size_t size;
32:
1.1.1.2 ! ohara 33: size = (nbits + GMP_NUMB_BITS - 1) / GMP_NUMB_BITS;
1.1 maekawa 34: if (ALLOC (rop) < size)
35: _mpz_realloc (rop, size);
36:
37: rp = PTR (rop);
38:
39: _gmp_rand (rp, rstate, nbits);
40: MPN_NORMALIZE (rp, size);
41: SIZ (rop) = size;
42: }
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