blob: da5b7981e5d075842cf6fdcccbeba7fc1da1c588 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
/* Test of signbit() substitute.
Copyright (C) 2007-2024 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Bruno Haible <bruno@clisp.org>, 2007. */
#include <config.h>
#include <math.h>
/* signbit must be a macro. */
#ifndef signbit
# error missing declaration
#endif
#include <float.h>
#include <limits.h>
#include "minus-zero.h"
#include "infinity.h"
#include "signed-nan.h"
#include "signed-snan.h"
#include "macros.h"
float zerof = 0.0f;
double zerod = 0.0;
long double zerol = 0.0L;
static void
test_signbitf ()
{
/* Finite values. */
ASSERT (!signbit (3.141f));
ASSERT (!signbit (3.141e30f));
ASSERT (!signbit (3.141e-30f));
ASSERT (signbit (-2.718f));
ASSERT (signbit (-2.718e30f));
ASSERT (signbit (-2.718e-30f));
/* Zeros. */
ASSERT (!signbit (0.0f));
if (1.0f / minus_zerof < 0)
ASSERT (signbit (minus_zerof));
else
ASSERT (!signbit (minus_zerof));
/* Infinite values. */
ASSERT (!signbit (Infinityf ()));
ASSERT (signbit (- Infinityf ()));
/* Quiet NaN. */
ASSERT (!signbit (positive_NaNf ()));
ASSERT (signbit (negative_NaNf ()));
#if HAVE_SNANF
/* Signalling NaN. */
ASSERT (!signbit (positive_SNaNf ()));
ASSERT (signbit (negative_SNaNf ()));
#endif
}
static void
test_signbitd ()
{
/* Finite values. */
ASSERT (!signbit (3.141));
ASSERT (!signbit (3.141e30));
ASSERT (!signbit (3.141e-30));
ASSERT (signbit (-2.718));
ASSERT (signbit (-2.718e30));
ASSERT (signbit (-2.718e-30));
/* Zeros. */
ASSERT (!signbit (0.0));
if (1.0 / minus_zerod < 0)
ASSERT (signbit (minus_zerod));
else
ASSERT (!signbit (minus_zerod));
/* Infinite values. */
ASSERT (!signbit (Infinityd ()));
ASSERT (signbit (- Infinityd ()));
/* Quiet NaN. */
ASSERT (!signbit (positive_NaNd ()));
ASSERT (signbit (negative_NaNd ()));
#if HAVE_SNAND
/* Signalling NaN. */
ASSERT (!signbit (positive_SNaNd ()));
ASSERT (signbit (negative_SNaNd ()));
#endif
}
static void
test_signbitl ()
{
/* Finite values. */
ASSERT (!signbit (3.141L));
ASSERT (!signbit (3.141e30L));
ASSERT (!signbit (3.141e-30L));
ASSERT (signbit (-2.718L));
ASSERT (signbit (-2.718e30L));
ASSERT (signbit (-2.718e-30L));
/* Zeros. */
ASSERT (!signbit (0.0L));
if (1.0L / minus_zerol < 0)
ASSERT (signbit (minus_zerol));
else
ASSERT (!signbit (minus_zerol));
/* Infinite values. */
ASSERT (!signbit (Infinityl ()));
ASSERT (signbit (- Infinityl ()));
/* Quiet NaN. */
ASSERT (!signbit (positive_NaNl ()));
ASSERT (signbit (negative_NaNl ()));
#if HAVE_SNANL
/* Signalling NaN. */
ASSERT (!signbit (positive_SNaNl ()));
ASSERT (signbit (negative_SNaNl ()));
#endif
}
int
main ()
{
test_signbitf ();
test_signbitd ();
test_signbitl ();
return 0;
}
|
