blob: df939ff860ce63c684bc814d7e307070dae5d101 (
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
|
/* Macros for floating-point negative zero.
Copyright (C) 2010-2020 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/>. */
/* Keep in sync with m4/minus-zero.m4! */
#include <float.h>
/* minus_zerof represents the value -0.0f. */
/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0f.
ICC 10.0 has a bug when optimizing the expression -zero.
The expression -FLT_MIN * FLT_MIN does not work when cross-compiling
to PowerPC on Mac OS X 10.5. */
#if defined __hpux || defined __sgi || defined __ICC
static float
compute_minus_zerof (void)
{
return -FLT_MIN * FLT_MIN;
}
# define minus_zerof compute_minus_zerof ()
#else
float minus_zerof = -0.0f;
#endif
/* minus_zerod represents the value -0.0. */
/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0.
ICC 10.0 has a bug when optimizing the expression -zero.
The expression -DBL_MIN * DBL_MIN does not work when cross-compiling
to PowerPC on Mac OS X 10.5. */
#if defined __hpux || defined __sgi || defined __ICC
static double
compute_minus_zerod (void)
{
return -DBL_MIN * DBL_MIN;
}
# define minus_zerod compute_minus_zerod ()
#else
double minus_zerod = -0.0;
#endif
/* minus_zerol represents the value -0.0L. */
/* HP cc on HP-UX 10.20 has a bug with the constant expression -0.0L.
IRIX cc can't put -0.0L into .data, but can compute at runtime.
ICC 10.0 has a bug when optimizing the expression -zero.
The expression -LDBL_MIN * LDBL_MIN does not work when cross-compiling
to PowerPC on Mac OS X 10.5. */
#if defined __hpux || defined __sgi || defined __ICC
static long double
compute_minus_zerol (void)
{
return -LDBL_MIN * LDBL_MIN;
}
# define minus_zerol compute_minus_zerol ()
#else
long double minus_zerol = -0.0L;
#endif
|
