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git.ipfire.org Git - thirdparty/glibc.git/blob - sysdeps/ia64/bits/floatn.h
1 /* Macros to control TS 18661-3 glibc features on ia64.
2 Copyright (C) 2017-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
19 #ifndef _BITS_FLOATN_H
20 #define _BITS_FLOATN_H
24 /* Defined to 1 if the current compiler invocation provides a
25 floating-point type with the IEEE 754 binary128 format, and this
26 glibc includes corresponding *f128 interfaces for it. The required
27 libgcc support was added some time after the basic compiler
29 #if __GNUC_PREREQ (4, 4)
30 # define __HAVE_FLOAT128 1
32 # define __HAVE_FLOAT128 0
35 /* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct
36 from the default float, double and long double types in this glibc. */
38 # define __HAVE_DISTINCT_FLOAT128 1
40 # define __HAVE_DISTINCT_FLOAT128 0
43 /* Defined to 1 if the current compiler invocation provides a
44 floating-point type with the right format for _Float64x, and this
45 glibc includes corresponding *f64x interfaces for it. */
46 #define __HAVE_FLOAT64X 1
48 /* Defined to 1 if __HAVE_FLOAT64X is 1 and _Float64x has the format
49 of long double. Otherwise, if __HAVE_FLOAT64X is 1, _Float64x has
50 the format of _Float128, which must be different from that of long
52 #define __HAVE_FLOAT64X_LONG_DOUBLE 1
56 /* Defined to concatenate the literal suffix to be used with _Float128
57 types, if __HAVE_FLOAT128 is 1. */
59 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus
60 /* The literal suffix f128 exists only since GCC 7.0. */
61 # define __f128(x) x##q
63 # define __f128(x) x##f128
67 /* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */
69 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus
70 /* Add a typedef for older GCC compilers which don't natively support
71 _Complex _Float128. */
72 typedef _Complex
float __cfloat128
__attribute__ ((__mode__ (__TC__
)));
73 # define __CFLOAT128 __cfloat128
75 # define __CFLOAT128 _Complex _Float128
79 /* The remaining of this file provides support for older compilers. */
82 /* The type _Float128 exists only since GCC 7.0. */
83 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus
84 typedef __float128 _Float128
;
87 /* __builtin_huge_valf128 doesn't exist before GCC 7.0. */
88 # if !__GNUC_PREREQ (7, 0)
89 # define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ())
92 /* Older GCC has only a subset of built-in functions for _Float128 on
93 ia64, and __builtin_infq is not usable in static initializers.
94 Converting a narrower sNaN to _Float128 produces a quiet NaN, so
95 attempts to use _Float128 sNaNs will not work properly with older
97 # if !__GNUC_PREREQ (7, 0)
98 # define __builtin_copysignf128 __builtin_copysignq
99 # define __builtin_fabsf128 __builtin_fabsq
100 # define __builtin_inff128() ((_Float128) __builtin_inf ())
101 # define __builtin_nanf128(x) ((_Float128) __builtin_nan (x))
102 # define __builtin_nansf128(x) ((_Float128) __builtin_nans (x))
105 /* In math/math.h, __MATH_TG will expand signbit to __builtin_signbit*,
106 e.g.: __builtin_signbitf128, before GCC 6. However, there has never
107 been a __builtin_signbitf128 in GCC and the type-generic builtin is
108 only available since GCC 6. */
109 # if !__GNUC_PREREQ (6, 0)
110 # define __builtin_signbitf128 __signbitf128
115 #endif /* !__ASSEMBLER__. */
117 #include <bits/floatn-common.h>
119 #endif /* _BITS_FLOATN_H */