| /* Macros to control TS 18661-3 glibc features on ldbl-128 platforms. |
| Copyright (C) 2017-2022 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 |
| <https://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 */ |