1 /* Test file for mpfr_acosh.
2
3 Copyright 2001-2004, 2006-2023 Free Software Foundation, Inc.
4 Contributed by the AriC and Caramba projects, INRIA.
5
6 This file is part of the GNU MPFR Library.
7
8 The GNU MPFR Library is free software; you can redistribute it and/or modify
9 it under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or (at your
11 option) any later version.
12
13 The GNU MPFR Library is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
16 License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
20 https://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
21 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
22
23 #include "mpfr-test.h"
24
25 #define TEST_FUNCTION mpfr_acosh
26 #define TEST_RANDOM_POS 4
27 #define TEST_RANDOM_EMIN 1
28 #include "tgeneric.c"
29
30 #define TEST_FUNCTION mpfr_acosh
31 #define TEST_RANDOM_POS 1
32 #define TEST_RANDOM_EMIN MPFR_EMAX_MAX
33 #define TEST_RANDOM_EMAX MPFR_EMAX_MAX
34 #define test_generic test_generic_huge
35 #include "tgeneric.c"
36
37 static void
38 special (void)
39 {
40 mpfr_t x, y;
41
42 mpfr_init (x);
43 mpfr_init (y);
44
45 MPFR_SET_INF(x);
46 mpfr_set_ui (y, 1, MPFR_RNDN);
47 mpfr_acosh (x, y, MPFR_RNDN);
48 if (MPFR_IS_INF(x) || MPFR_IS_NAN(x) )
49 {
50 printf ("Inf flag not clears in acosh!\n");
51 exit (1);
52 }
53 if (mpfr_cmp_ui (x, 0))
54 {
55 printf ("Error: mpfr_acosh(1) <> 0\n");
56 exit (1);
57 }
58
59 MPFR_SET_NAN(x);
60 mpfr_acosh (x, y, MPFR_RNDN);
61 if (MPFR_IS_NAN(x) || MPFR_IS_INF(x) )
62 {
63 printf ("NAN flag not clears in acosh!\n");
64 exit (1);
65 }
66
67 mpfr_set_ui (x, 0, MPFR_RNDN);
68 mpfr_acosh (y, x, MPFR_RNDN);
69 if (!mpfr_nan_p (y))
70 {
71 printf ("Error: mpfr_acosh(0) <> NaN\n");
72 exit (1);
73 }
74
75 mpfr_set_si (x, -1, MPFR_RNDN);
76 mpfr_acosh (y, x, MPFR_RNDN);
77 if (!mpfr_nan_p (y))
78 {
79 printf ("Error: mpfr_acosh(-1) <> NaN\n");
80 exit (1);
81 }
82
83 MPFR_SET_NAN(x);
84 mpfr_acosh (y, x, MPFR_RNDN);
85 if (!mpfr_nan_p (y))
86 {
87 printf ("Error: mpfr_acosh(NaN) <> NaN\n");
88 exit (1);
89 }
90
91 mpfr_set_inf (x, 1);
92 mpfr_acosh (y, x, MPFR_RNDN);
93 if (!mpfr_inf_p (y) || mpfr_sgn (y) < 0)
94 {
95 printf ("Error: mpfr_acosh(+Inf) <> +Inf\n");
96 exit (1);
97 }
98
99 mpfr_set_inf (x, -1);
100 mpfr_acosh (y, x, MPFR_RNDN);
101 if (!mpfr_nan_p (y))
102 {
103 printf ("Error: mpfr_acosh(-Inf) <> NaN\n");
104 exit (1);
105 }
106
107 mpfr_set_ui (x, 1, MPFR_RNDN);
108 mpfr_div_2ui (x, x, 1, MPFR_RNDN);
109 mpfr_acosh (y, x, MPFR_RNDN);
110 if (!mpfr_nan_p (y))
111 {
112 printf ("Error: mpfr_acosh(1/2) <> NaN\n");
113 exit (1);
114 }
115
116 mpfr_set_prec (x, 32);
117 mpfr_set_prec (y, 32);
118 mpfr_set_str_binary (x, "1.000001101011101111001011");
119 mpfr_acosh (y, x, MPFR_RNDN);
120 mpfr_set_str_binary (x, "0.111010100101101001010001101001E-2");
121 if (mpfr_cmp (x, y))
122 {
123 printf ("Error: mpfr_acosh (1)\n");
124 exit (1);
125 }
126
127 mpfr_clear (x);
128 mpfr_clear (y);
129 }
130
131 /* With MPFR 2.3.0, this yields an assertion failure in mpfr_acosh. */
132 static void
133 bug20070831 (void)
134 {
135 mpfr_t x, y, z;
136 int inex;
137
138 mpfr_init2 (x, 256);
139 mpfr_init2 (y, 32);
140 mpfr_init2 (z, 32);
141
142 mpfr_set_ui (x, 1, MPFR_RNDN);
143 mpfr_nextabove (x);
144 inex = mpfr_acosh (y, x, MPFR_RNDZ);
145 mpfr_set_ui_2exp (z, 1, -127, MPFR_RNDN);
146 mpfr_nextbelow (z);
147 if (!mpfr_equal_p (y, z))
148 {
149 printf ("Error in bug20070831 (1):\nexpected ");
150 mpfr_dump (z);
151 printf ("got ");
152 mpfr_dump (y);
153 exit (1);
154 }
155 MPFR_ASSERTN (inex < 0);
156
157 mpfr_nextabove (x);
158 mpfr_set_prec (y, 29);
159 inex = mpfr_acosh (y, x, MPFR_RNDN);
160 mpfr_set_str_binary (z, "1.011010100000100111100110011E-127");
161 if (!mpfr_equal_p (y, z))
162 {
163 printf ("Error in bug20070831 (2):\nexpected ");
164 mpfr_dump (z);
165 printf ("got ");
166 mpfr_dump (y);
167 exit (1);
168 }
169 MPFR_ASSERTN (inex < 0);
170
171 mpfr_clears (x, y, z, (mpfr_ptr) 0);
172 }
173
174 static void
175 huge (void)
176 {
177 mpfr_t x, y, z;
178 int inex;
179
180 /* TODO: extend the exponent range and use mpfr_get_emax (). */
181 mpfr_inits2 (32, x, y, z, (mpfr_ptr) 0);
182 mpfr_set_ui_2exp (x, 1, 1073741822, MPFR_RNDN);
183 inex = mpfr_acosh (y, x, MPFR_RNDN);
184 mpfr_set_str_binary (z, "0.10110001011100100001011111110101E30");
185 if (!mpfr_equal_p (y, z))
186 {
187 printf ("Error in huge:\nexpected ");
188 mpfr_dump (z);
189 printf ("got ");
190 mpfr_dump (y);
191 exit (1);
192 }
193 MPFR_ASSERTN (inex < 0);
194
195 mpfr_clears (x, y, z, (mpfr_ptr) 0);
196 }
197
198 int
199 main (int argc, char *argv[])
200 {
201 tests_start_mpfr ();
202
203 special ();
204 bug20070831 ();
205 huge ();
206
207 test_generic (MPFR_PREC_MIN, 100, 25);
208 test_generic_huge (MPFR_PREC_MIN, 100, 5);
209
210 data_check ("data/acosh", mpfr_acosh, "mpfr_acosh");
211 bad_cases (mpfr_acosh, mpfr_cosh, "mpfr_acosh", 0, -128, 29,
212 4, 128, 800, 40);
213
214 tests_end_mpfr ();
215 return 0;
216 }