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
|
/* Macros to control TS 18661-3 glibc features on ldbl-128 platforms.
Copyright (C) 2017-2018 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _BITS_FLOATN_H
#define _BITS_FLOATN_H
#include <features.h>
#include <bits/long-double.h>
/* Defined to 1 if the current compiler invocation provides a
floating-point type with the IEEE 754 binary128 format, and this
glibc includes corresponding *f128 interfaces for it. */
#ifndef __NO_LONG_DOUBLE_MATH
# define __HAVE_FLOAT128 1
#else
/* glibc does not support _Float128 for platforms where long double is
normally binary128 when building with long double as binary64.
GCC's default for supported scalar modes does not support it either
in that case. */
# define __HAVE_FLOAT128 0
#endif
/* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
from the default float, double and long double types in this glibc. */
#define __HAVE_DISTINCT_FLOAT128 0
/* Defined to 1 if the current compiler invocation provides a
floating-point type with the right format for _Float64x, and this
glibc includes corresponding *f64x interfaces for it. */
#define __HAVE_FLOAT64X __HAVE_FLOAT128
/* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
of long double. Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
the format of _Float128, which must be different from that of long
double. */
#define __HAVE_FLOAT64X_LONG_DOUBLE __HAVE_FLOAT128
#ifndef __ASSEMBLER__
/* Defined to concatenate the literal suffix to be used with _Float128
types, if __HAVE_FLOAT128 is 1. */
# if __HAVE_FLOAT128
# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
/* The literal suffix f128 exists only since GCC 7.0. */
# define __f128(x) x##l
# else
# define __f128(x) x##f128
# endif
# endif
/* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */
# if __HAVE_FLOAT128
# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
# define __CFLOAT128 _Complex long double
# else
# define __CFLOAT128 _Complex _Float128
# endif
# endif
/* The remaining of this file provides support for older compilers. */
# if __HAVE_FLOAT128
/* The type _Float128 exists only since GCC 7.0. */
# if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef long double _Float128;
# endif
/* Various built-in functions do not exist before GCC 7.0. */
# if !__GNUC_PREREQ (7, 0)
# define __builtin_huge_valf128() (__builtin_huge_vall ())
# define __builtin_inff128() (__builtin_infl ())
# define __builtin_nanf128(x) (__builtin_nanl (x))
# define __builtin_nansf128(x) (__builtin_nansl (x))
# endif
# endif
#endif /* !__ASSEMBLER__. */
#include <bits/floatn-common.h>
#endif /* _BITS_FLOATN_H */
|
