1/* Test file for mpfr_acosh.
2
3Copyright 2001, 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
4Contributed by the Arenaire and Cacao projects, INRIA.
5
6This file is part of the GNU MPFR Library.
7
8The GNU MPFR Library is free software; you can redistribute it and/or modify
9it under the terms of the GNU Lesser General Public License as published by
10the Free Software Foundation; either version 3 of the License, or (at your
11option) any later version.
12
13The GNU MPFR Library is distributed in the hope that it will be useful, but
14WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
16License for more details.
17
18You should have received a copy of the GNU Lesser General Public License
19along with the GNU MPFR Library; see the file COPYING.LESSER.  If not, see
20http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
2151 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
22
23#include <stdio.h>
24#include <stdlib.h>
25
26#include "mpfr-test.h"
27
28#define TEST_FUNCTION mpfr_acosh
29#define TEST_RANDOM_POS 4
30#define TEST_RANDOM_EMIN 1
31#include "tgeneric.c"
32
33#define TEST_FUNCTION mpfr_acosh
34#define TEST_RANDOM_POS 1
35#define TEST_RANDOM_EMIN MPFR_EMAX_MAX
36#define TEST_RANDOM_EMAX MPFR_EMAX_MAX
37#define test_generic test_generic_huge
38#include "tgeneric.c"
39
40static void
41special (void)
42{
43  mpfr_t x, y;
44
45  mpfr_init (x);
46  mpfr_init (y);
47
48  MPFR_SET_INF(x);
49  mpfr_set_ui (y, 1, MPFR_RNDN);
50  mpfr_acosh (x, y, MPFR_RNDN);
51  if (MPFR_IS_INF(x) || MPFR_IS_NAN(x) )
52    {
53      printf ("Inf flag not clears in acosh!\n");
54      exit (1);
55    }
56  if (mpfr_cmp_ui (x, 0))
57    {
58      printf ("Error: mpfr_acosh(1) <> 0\n");
59      exit (1);
60    }
61
62  MPFR_SET_NAN(x);
63  mpfr_acosh (x, y, MPFR_RNDN);
64  if (MPFR_IS_NAN(x) || MPFR_IS_INF(x) )
65    {
66      printf ("NAN flag not clears in acosh!\n");
67      exit (1);
68    }
69
70  mpfr_set_ui (x, 0, MPFR_RNDN);
71  mpfr_acosh (y, x, MPFR_RNDN);
72  if (!mpfr_nan_p (y))
73    {
74      printf ("Error: mpfr_acosh(0) <> NaN\n");
75      exit (1);
76    }
77
78  mpfr_set_si (x, -1, MPFR_RNDN);
79  mpfr_acosh (y, x, MPFR_RNDN);
80  if (!mpfr_nan_p (y))
81    {
82      printf ("Error: mpfr_acosh(-1) <> NaN\n");
83      exit (1);
84    }
85
86  MPFR_SET_NAN(x);
87  mpfr_acosh (y, x, MPFR_RNDN);
88  if (!mpfr_nan_p (y))
89    {
90      printf ("Error: mpfr_acosh(NaN) <> NaN\n");
91      exit (1);
92    }
93
94  mpfr_set_inf (x, 1);
95  mpfr_acosh (y, x, MPFR_RNDN);
96  if (!mpfr_inf_p (y) || mpfr_sgn (y) < 0)
97    {
98      printf ("Error: mpfr_acosh(+Inf) <> +Inf\n");
99      exit (1);
100    }
101
102  mpfr_set_inf (x, -1);
103  mpfr_acosh (y, x, MPFR_RNDN);
104  if (!mpfr_nan_p (y))
105    {
106      printf ("Error: mpfr_acosh(-Inf) <> NaN\n");
107      exit (1);
108    }
109
110  mpfr_set_ui (x, 1, MPFR_RNDN);
111  mpfr_div_2exp (x, x, 1, MPFR_RNDN);
112  mpfr_acosh (y, x, MPFR_RNDN);
113  if (!mpfr_nan_p (y))
114    {
115      printf ("Error: mpfr_acosh(1/2) <> NaN\n");
116      exit (1);
117    }
118
119  mpfr_set_prec (x, 32);
120  mpfr_set_prec (y, 32);
121  mpfr_set_str_binary (x, "1.000001101011101111001011");
122  mpfr_acosh (y, x, MPFR_RNDN);
123  mpfr_set_str_binary (x, "0.111010100101101001010001101001E-2");
124  if (mpfr_cmp (x, y))
125    {
126      printf ("Error: mpfr_acosh (1)\n");
127      exit (1);
128    }
129
130  mpfr_clear (x);
131  mpfr_clear (y);
132}
133
134/* With MPFR 2.3.0, this yields an assertion failure in mpfr_acosh. */
135static void
136bug20070831 (void)
137{
138  mpfr_t x, y, z;
139  int inex;
140
141  mpfr_init2 (x, 256);
142  mpfr_init2 (y, 32);
143  mpfr_init2 (z, 32);
144
145  mpfr_set_ui (x, 1, MPFR_RNDN);
146  mpfr_nextabove (x);
147  inex = mpfr_acosh (y, x, MPFR_RNDZ);
148  mpfr_set_ui_2exp (z, 1, -127, MPFR_RNDN);
149  mpfr_nextbelow (z);
150  if (!mpfr_equal_p (y, z))
151    {
152      printf ("Error in bug20070831 (1):\nexpected ");
153      mpfr_dump (z);
154      printf ("got      ");
155      mpfr_dump (y);
156      exit (1);
157    }
158  MPFR_ASSERTN (inex < 0);
159
160  mpfr_nextabove (x);
161  mpfr_set_prec (y, 29);
162  inex = mpfr_acosh (y, x, MPFR_RNDN);
163  mpfr_set_str_binary (z, "1.011010100000100111100110011E-127");
164  if (!mpfr_equal_p (y, z))
165    {
166      printf ("Error in bug20070831 (2):\nexpected ");
167      mpfr_dump (z);
168      printf ("got      ");
169      mpfr_dump (y);
170      exit (1);
171    }
172  MPFR_ASSERTN (inex < 0);
173
174  mpfr_clears (x, y, z, (mpfr_ptr) 0);
175}
176
177static void
178huge (void)
179{
180  mpfr_t x, y, z;
181  int inex;
182
183  /* TODO: extend the exponent range and use mpfr_get_emax (). */
184  mpfr_inits2 (32, x, y, z, (mpfr_ptr) 0);
185  mpfr_set_ui_2exp (x, 1, 1073741822, MPFR_RNDN);
186  inex = mpfr_acosh (y, x, MPFR_RNDN);
187  mpfr_set_str_binary (z, "0.10110001011100100001011111110101E30");
188  if (!mpfr_equal_p (y, z))
189    {
190      printf ("Error in huge:\nexpected ");
191      mpfr_dump (z);
192      printf ("got      ");
193      mpfr_dump (y);
194      exit (1);
195    }
196  MPFR_ASSERTN (inex < 0);
197
198  mpfr_clears (x, y, z, (mpfr_ptr) 0);
199}
200
201int
202main (int argc, char *argv[])
203{
204  tests_start_mpfr ();
205
206  special ();
207  bug20070831 ();
208  huge ();
209
210  test_generic (2, 100, 25);
211  test_generic_huge (2, 100, 5);
212
213  data_check ("data/acosh", mpfr_acosh, "mpfr_acosh");
214  bad_cases (mpfr_acosh, mpfr_cosh, "mpfr_acosh", 0, -128, 29,
215             4, 128, 800, 40);
216
217  tests_end_mpfr ();
218  return 0;
219}
220