1 /* mpf_random2 -- Generate a positive random mpf_t of specified size, with
2 long runs of consecutive ones and zeros in the binary representation.
3 Intended for testing of other MP routines.
5 Copyright (C) 1995, 1996 Free Software Foundation, Inc.
7 This file is part of the GNU MP Library.
9 The GNU MP Library is free software; you can redistribute it and/or modify
10 it under the terms of the GNU Library General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or (at your
12 option) any later version.
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 Library General Public
17 License for more details.
19 You should have received a copy of the GNU Library 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. */
27 #if defined (__hpux) || defined (alpha__) || defined (__svr4__) || defined (__SVR4)
28 /* HPUX lacks random(). DEC OSF/1 1.2 random() returns a double. */
41 mpf_random2 (mpf_ptr x, mp_size_t size, mp_exp_t exp)
43 mpf_random2 (x, size, exp)
50 mp_size_t prec = x->_mp_prec;
58 mpn_random2 (x->_mp_d, asize);
62 exp = random () % (2 * exp) - exp;
63 x->_mp_exp = asize == 0 ? 0 : exp;
64 x->_mp_size = size < 0 ? -asize : asize;