1/* Test that routines allow reusing a source variable as destination.
2
3Copyright 1996, 2000-2002, 2012 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 https://www.gnu.org/licenses/.  */
19
20#include <stdio.h>
21#include <stdlib.h>
22#include <string.h>
23
24#include "gmp-impl.h"
25#include "tests.h"
26
27#if __GMP_LIBGMP_DLL
28
29/* FIXME: When linking to a DLL libgmp, mpf_add etc can't be used as
30   initializers for global variables because they're effectively global
31   variables (function pointers) themselves.  Perhaps calling a test
32   function successively with mpf_add etc would be better.  */
33
34int
35main (void)
36{
37  printf ("Test suppressed for windows DLL\n");
38  exit (0);
39}
40
41
42#else /* ! DLL_EXPORT */
43
44#ifndef SIZE
45#define SIZE 16
46#endif
47
48#ifndef EXPO
49#define EXPO 32
50#endif
51
52void dump_abort (const char *, mpf_t, mpf_t);
53
54typedef void (*dss_func) (mpf_ptr, mpf_srcptr, mpf_srcptr);
55
56dss_func dss_funcs[] =
57{
58  mpf_div, mpf_add, mpf_mul, mpf_sub,
59};
60
61const char *dss_func_names[] =
62{
63  "mpf_div", "mpf_add", "mpf_mul", "mpf_sub",
64};
65
66typedef void (*dsi_func) (mpf_ptr, mpf_srcptr, unsigned long int);
67
68dsi_func dsi_funcs[] =
69{
70  mpf_div_ui, mpf_add_ui, mpf_mul_ui, mpf_sub_ui,
71  mpf_mul_2exp, mpf_div_2exp, mpf_pow_ui
72};
73
74const char *dsi_func_names[] =
75{
76  "mpf_div_ui", "mpf_add_ui", "mpf_mul_ui", "mpf_sub_ui",
77  "mpf_mul_2exp", "mpf_div_2exp", "mpf_pow_ui"
78};
79
80typedef void (*dis_func) (mpf_ptr, unsigned long int, mpf_srcptr);
81
82dis_func dis_funcs[] =
83{
84  mpf_ui_div, mpf_ui_sub,
85};
86
87const char *dis_func_names[] =
88{
89  "mpf_ui_div", "mpf_ui_sub",
90};
91
92int
93main (int argc, char **argv)
94{
95  int i;
96  int pass, reps = 10000;
97  mpf_t in1, in2, out1;
98  unsigned long int in1i, in2i;
99  mpf_t res1, res2, res3;
100  mp_size_t bprec = 100;
101
102  tests_start ();
103
104  if (argc > 1)
105    {
106      reps = strtol (argv[1], 0, 0);
107      if (argc > 2)
108	bprec = strtol (argv[2], 0, 0);
109    }
110
111  mpf_set_default_prec (bprec);
112
113  mpf_init (in1);
114  mpf_init (in2);
115  mpf_init (out1);
116  mpf_init (res1);
117  mpf_init (res2);
118  mpf_init (res3);
119
120  for (pass = 1; pass <= reps; pass++)
121    {
122      mpf_random2 (in1, urandom () % SIZE - SIZE/2, urandom () % EXPO);
123      mpf_random2 (in2, urandom () % SIZE - SIZE/2, urandom () % EXPO);
124
125      for (i = 0; i < sizeof (dss_funcs) / sizeof (dss_func); i++)
126	{
127	  /* Don't divide by 0.  */
128	  if (i == 0 && mpf_cmp_ui (in2, 0) == 0)
129	    continue;
130
131	  (dss_funcs[i]) (res1, in1, in2);
132
133	  mpf_set (out1, in1);
134	  (dss_funcs[i]) (out1, out1, in2);
135	  mpf_set (res2, out1);
136
137	  mpf_set (out1, in2);
138	  (dss_funcs[i]) (out1, in1, out1);
139	  mpf_set (res3, out1);
140
141	  if (mpf_cmp (res1, res2) != 0)
142	    dump_abort (dss_func_names[i], res1, res2);
143	  if (mpf_cmp (res1, res3) != 0)
144	    dump_abort (dss_func_names[i], res1, res3);
145	}
146
147      in2i = urandom ();
148      for (i = 0; i < sizeof (dsi_funcs) / sizeof (dsi_func); i++)
149	{
150	  unsigned long this_in2i = in2i;
151
152	  /* Don't divide by 0.  */
153	  if (dsi_funcs[i] == mpf_div_ui && this_in2i == 0)
154	    continue;
155
156	  /* Avoid overflow/underflow in the exponent.  */
157	  if (dsi_funcs[i] == mpf_mul_2exp || dsi_funcs[i] == mpf_div_2exp)
158	    this_in2i %= 0x100000;
159	  else if (dsi_funcs[i] == mpf_pow_ui)
160	    this_in2i %= 0x1000;
161
162	  (dsi_funcs[i]) (res1, in1, this_in2i);
163
164	  mpf_set (out1, in1);
165	  (dsi_funcs[i]) (out1, out1, this_in2i);
166	  mpf_set (res2, out1);
167
168	  if (mpf_cmp (res1, res2) != 0)
169	    dump_abort (dsi_func_names[i], res1, res2);
170	}
171
172      in1i = urandom ();
173      for (i = 0; i < sizeof (dis_funcs) / sizeof (dis_func); i++)
174	{
175	  /* Don't divide by 0.  */
176	  if (dis_funcs[i] == mpf_ui_div
177	      && mpf_cmp_ui (in2, 0) == 0)
178	    continue;
179
180	  (dis_funcs[i]) (res1, in1i, in2);
181
182	  mpf_set (out1, in2);
183	  (dis_funcs[i]) (out1, in1i, out1);
184	  mpf_set (res2, out1);
185
186	  if (mpf_cmp (res1, res2) != 0)
187	    dump_abort (dis_func_names[i], res1, res2);
188	}
189
190    }
191
192  mpf_clear (in1);
193  mpf_clear (in2);
194  mpf_clear (out1);
195  mpf_clear (res1);
196  mpf_clear (res2);
197  mpf_clear (res3);
198
199  tests_end ();
200  exit (0);
201}
202
203void
204dump_abort (const char *name, mpf_t res1, mpf_t res2)
205{
206  printf ("failure in %s:\n", name);
207  mpf_dump (res1);
208  mpf_dump (res2);
209  abort ();
210}
211
212#if 0
213void mpf_abs		(mpf_ptr, mpf_srcptr);
214void mpf_sqrt		(mpf_ptr, mpf_srcptr);
215void mpf_neg		(mpf_ptr, mpf_srcptr);
216#endif
217
218#endif /* ! DLL_EXPORT */
219