1 /* Test mpf_get_str and mpf_set_str.
3 Copyright (C) 1996 Free Software Foundation, Inc.
5 This file is part of the GNU MP Library.
7 The GNU MP Library is free software; you can redistribute it and/or modify
8 it under the terms of the GNU Library General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or (at your
10 option) any later version.
12 The GNU MP Library is distributed in the hope that it will be useful, but
13 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public
15 License for more details.
17 You should have received a copy of the GNU Library General Public License
18 along with the GNU MP Library; see the file COPYING.LIB. If not, write to
19 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
20 MA 02111-1307, USA. */
42 mp_size_t bprec = 100;
43 mpf_t d, rerr, max_rerr, limit_rerr;
48 char buf[SIZE * BITS_PER_MP_LIMB + 5];
52 reps = strtol (argv[1], 0, 0);
54 bprec = strtol (argv[2], 0, 0);
57 mpf_set_default_prec (bprec);
59 mpf_init_set_ui (limit_rerr, 1);
60 mpf_div_2exp (limit_rerr, limit_rerr, bprec);
62 mpf_dump (limit_rerr);
65 mpf_init_set_ui (max_rerr, 0);
71 for (i = 0; i < reps; i++)
73 size = urandom () % (2 * SIZE) - SIZE;
74 exp = urandom () % EXPO;
75 mpf_random2 (x, size, exp);
77 base = urandom () % 35 + 2;
79 str = mpf_get_str (0, &bexp, base, 0, x);
82 sprintf (buf, "-0.%s@%ld", str + 1, bexp);
84 sprintf (buf, "0.%s@%ld", str, bexp);
86 mpf_set_str (y, buf, -base);
89 mpf_reldiff (rerr, x, y);
90 if (mpf_cmp (rerr, max_rerr) > 0)
92 mpf_set (max_rerr, rerr);
96 if (mpf_cmp (rerr, limit_rerr) > 0)
98 printf ("ERROR after %d tests\n", i);
99 printf ("base = %d\n", base);
100 printf (" x = "); mpf_dump (x);
101 printf (" y = "); mpf_dump (y);
114 printf (" exp = %ld\n", x->_mp_exp);
115 printf ("size = %d\n", x->_mp_size);
116 for (i = ABS (x->_mp_size) - 1; i >= 0; i--)
117 printf ("%08lX ", x->_mp_d[i]);