blob: fdb574d937160d10b207476844ccc69b2b993bbb (
plain) (
blame)
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
|
/* Properties of long double type.
Copyright (C) 2016-2021 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 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
<https://www.gnu.org/licenses/>. */
/* This header is included by <sys/cdefs.h>.
If long double is ABI-compatible with double, it should define
__NO_LONG_DOUBLE_MATH to 1; otherwise, it should leave
__NO_LONG_DOUBLE_MATH undefined.
If this build of the GNU C Library supports both long double
ABI-compatible with double and some other long double format not
ABI-compatible with double, it should define
__LONG_DOUBLE_MATH_OPTIONAL to 1; otherwise, it should leave
__LONG_DOUBLE_MATH_OPTIONAL undefined.
If __NO_LONG_DOUBLE_MATH is already defined, this header must not
define anything; this is needed to work with the definition of
__NO_LONG_DOUBLE_MATH in nldbl-compat.h. */
/* In the default version of this header, long double is
ABI-compatible with double. */
#ifndef __NO_LONG_DOUBLE_MATH
# define __NO_LONG_DOUBLE_MATH 1
#endif
/* The macro __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI is used to determine the
choice of the underlying ABI of long double. It will always assume
a constant value for each translation unit.
If the value is non-zero, any API which is parameterized by the long
double type (i.e the scanf/printf family of functions or the explicitly
parameterized math.h functions) will be redirected to a compatible
implementation using _Float128 ABI via symbols suffixed with ieee128.
The mechanism this macro uses to acquire may be a function
of architecture, or target specific options used to invoke the
compiler. */
#define __LDOUBLE_REDIRECTS_TO_FLOAT128_ABI 0
|
