Annotation of OpenXM/src/kan96xx/gmp-2.0.2/mpf/tests/t-sqrt.c, Revision 1.1.1.1
1.1 maekawa 1: /* Test mpf_sqrt, mpf_mul.
2:
3: Copyright (C) 1996 Free Software Foundation, Inc.
4:
5: This file is part of the GNU MP Library.
6:
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.
11:
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.
16:
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. */
21:
22: #include <stdio.h>
23: #include "gmp.h"
24: #include "gmp-impl.h"
25: #include "urandom.h"
26:
27: #ifndef SIZE
28: #define SIZE 16
29: #endif
30:
31: main (argc, argv)
32: int argc;
33: char **argv;
34: {
35: mp_size_t size;
36: mp_exp_t exp;
37: int reps = 100000;
38: int i;
39: mpf_t x, y, y2;
40: mp_size_t bprec = 100;
41: mpf_t rerr, max_rerr, limit_rerr;
42:
43: if (argc > 1)
44: {
45: reps = strtol (argv[1], 0, 0);
46: if (argc > 2)
47: bprec = strtol (argv[2], 0, 0);
48: }
49:
50: mpf_set_default_prec (bprec);
51:
52: mpf_init_set_ui (limit_rerr, 1);
53: mpf_div_2exp (limit_rerr, limit_rerr, bprec);
54: #if VERBOSE
55: mpf_dump (limit_rerr);
56: #endif
57: mpf_init (rerr);
58: mpf_init_set_ui (max_rerr, 0);
59:
60: mpf_init (x);
61: mpf_init (y);
62: mpf_init (y2);
63: for (i = 0; i < reps; i++)
64: {
65: size = urandom () % SIZE;
66: exp = urandom () % SIZE;
67: mpf_random2 (x, size, exp);
68:
69: mpf_sqrt (y, x);
70: mpf_mul (y2, y, y);
71:
72: mpf_reldiff (rerr, x, y2);
73: if (mpf_cmp (rerr, max_rerr) > 0)
74: {
75: mpf_set (max_rerr, rerr);
76: #if VERBOSE
77: mpf_dump (max_rerr);
78: #endif
79: if (mpf_cmp (rerr, limit_rerr) > 0)
80: {
81: printf ("ERROR after %d tests\n", i);
82: printf (" x = "); mpf_dump (x);
83: printf (" y = "); mpf_dump (y);
84: printf (" y2 = "); mpf_dump (y2);
85: abort ();
86: }
87: }
88: }
89:
90: exit (0);
91: }
92:
93: oo (x)
94: mpf_t x;
95: {
96: mp_size_t i;
97: printf (" exp = %ld\n", x->_mp_exp);
98: printf ("size = %d\n", x->_mp_size);
99: for (i = ABS (x->_mp_size) - 1; i >= 0; i--)
100: printf ("%08lX ", x->_mp_d[i]);
101: printf ("\n");
102: mpf_dump (x);
103: }
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