t-add.c revision 1.1.1.2 
1/* Test mpf_add.
2
3Copyright 1996, 2001 Free Software Foundation, Inc.
4
5This file is part of the GNU MP Library test suite.
6
7The GNU MP Library test suite is free software; you can redistribute it
8and/or modify it under the terms of the GNU General Public License as
9published by the Free Software Foundation; either version 3 of the License,
10or (at your option) any later version.
11
12The GNU MP Library test suite is distributed in the hope that it will be
13useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
15Public License for more details.
16
17You should have received a copy of the GNU General Public License along with
18the GNU MP Library test suite.  If not, see http://www.gnu.org/licenses/.  */
19
20#include <stdio.h>
21#include <stdlib.h>
22
23#include "gmp.h"
24#include "gmp-impl.h"
25#include "tests.h"
26
27#ifndef SIZE
28#define SIZE 16
29#endif
30
31int
32main (int argc, char **argv)
33{
34  mp_size_t size;
35  mp_exp_t exp;
36  int reps = 20000;
37  int i;
38  mpf_t u, v, w, wref;
39  mp_size_t bprec = 100;
40  mpf_t rerr, max_rerr, limit_rerr;
41
42  tests_start ();
43
44  if (argc > 1)
45    {
46      reps = strtol (argv[1], 0, 0);
47      if (argc > 2)
48	bprec = strtol (argv[2], 0, 0);
49    }
50
51  mpf_set_default_prec (bprec);
52
53  mpf_init_set_ui (limit_rerr, 1);
54  mpf_div_2exp (limit_rerr, limit_rerr, bprec);
55#if VERBOSE
56  mpf_dump (limit_rerr);
57#endif
58  mpf_init (rerr);
59  mpf_init_set_ui (max_rerr, 0);
60
61  mpf_init (u);
62  mpf_init (v);
63  mpf_init (w);
64  mpf_init (wref);
65  for (i = 0; i < reps; i++)
66    {
67      size = urandom () % (2 * SIZE) - SIZE;
68      exp = urandom () % SIZE;
69      mpf_random2 (u, size, exp);
70
71      size = urandom () % (2 * SIZE) - SIZE;
72      exp = urandom () % SIZE;
73      mpf_random2 (v, size, exp);
74
75      mpf_add (w, u, v);
76      refmpf_add (wref, u, v);
77
78      mpf_reldiff (rerr, w, wref);
79      if (mpf_cmp (rerr, max_rerr) > 0)
80	{
81	  mpf_set (max_rerr, rerr);
82#if VERBOSE
83	  mpf_dump (max_rerr);
84#endif
85	  if (mpf_cmp (rerr, limit_rerr) > 0)
86	    {
87	      printf ("ERROR after %d tests\n", i);
88	      printf ("   u = "); mpf_dump (u);
89	      printf ("   v = "); mpf_dump (v);
90	      printf ("wref = "); mpf_dump (wref);
91	      printf ("   w = "); mpf_dump (w);
92	      abort ();
93	    }
94	}
95    }
96
97  mpf_clear (limit_rerr);
98  mpf_clear (rerr);
99  mpf_clear (max_rerr);
100
101  mpf_clear (u);
102  mpf_clear (v);
103  mpf_clear (w);
104  mpf_clear (wref);
105
106  tests_end ();
107  exit (0);
108}
109