projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 034e7380 JM |
1 | /* Macros to control TS 18661-3 glibc features on ia64. |
| 2 | Copyright (C) 2017 Free Software Foundation, Inc. | |
| 3 | This file is part of the GNU C Library. | |
| 4 | ||
| 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. | |
| 9 | ||
| 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. | |
| 14 | ||
| 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 | <http://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | #ifndef _BITS_FLOATN_H | |
| 20 | #define _BITS_FLOATN_H | |
| 21 | ||
| 22 | #include <features.h> | |
| 23 | ||
| 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 | |
| 28 | support. */ | |
| 29 | #if __GNUC_PREREQ (4, 4) | |
| 30 | # define __HAVE_FLOAT128 1 | |
| 31 | #else | |
| 32 | # define __HAVE_FLOAT128 0 | |
| 33 | #endif | |
| 34 | ||
| 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. */ | |
| 37 | #if __HAVE_FLOAT128 | |
| 38 | # define __HAVE_DISTINCT_FLOAT128 1 | |
| 39 | #else | |
| 40 | # define __HAVE_DISTINCT_FLOAT128 0 | |
| 41 | #endif | |
| 42 | ||
| 43 | /* Defined to concatenate the literal suffix to be used with _Float128 | |
| 44 | types, if __HAVE_FLOAT128 is 1. */ | |
| 45 | #if __HAVE_FLOAT128 | |
| 46 | # if !__GNUC_PREREQ (7, 0) || defined __cplusplus | |
| 47 | /* The literal suffix f128 exists only since GCC 7.0. */ | |
| 48 | # define __f128(x) x##q | |
| 49 | # else | |
| 50 | # define __f128(x) x##f128 | |
| 51 | # endif | |
| 52 | #endif | |
| 53 | ||
| 54 | /* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */ | |
| 55 | #if __HAVE_FLOAT128 | |
| 56 | # if !__GNUC_PREREQ (7, 0) || defined __cplusplus | |
| 57 | /* Add a typedef for older GCC compilers which don't natively support | |
| 58 | _Complex _Float128. */ | |
| 59 | typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__))); | |
| 60 | # define __CFLOAT128 __cfloat128 | |
| 61 | # else | |
| 62 | # define __CFLOAT128 _Complex _Float128 | |
| 63 | # endif | |
| 64 | #endif | |
| 65 | ||
| 66 | /* The remaining of this file provides support for older compilers. */ | |
| 67 | #if __HAVE_FLOAT128 | |
| 68 | ||
| 69 | /* The type _Float128 exists only since GCC 7.0. */ | |
| 70 | # if !__GNUC_PREREQ (7, 0) || defined __cplusplus | |
| 71 | typedef __float128 _Float128; | |
| 72 | # endif | |
| 73 | ||
| 74 | /* __builtin_huge_valf128 doesn't exist before GCC 7.0. */ | |
| 75 | # if !__GNUC_PREREQ (7, 0) | |
| 76 | # define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) | |
| 77 | # endif | |
| 78 | ||
| 79 | /* Older GCC has only a subset of built-in functions for _Float128 on | |
| 80 | ia64, and __builtin_infq is not usable in static initializers. | |
| 81 | Converting a narrower sNaN to _Float128 produces a quiet NaN, so | |
| 82 | attempts to use _Float128 sNaNs will not work properly with older | |
| 83 | compilers. */ | |
| 84 | # if !__GNUC_PREREQ (7, 0) | |
| 85 | # define __builtin_copysignf128 __builtin_copysignq | |
| 86 | # define __builtin_fabsf128 __builtin_fabsq | |
| 87 | # define __builtin_inff128() ((_Float128) __builtin_inf ()) | |
| 88 | # define __builtin_nanf128(x) ((_Float128) __builtin_nan (x)) | |
| 89 | # define __builtin_nansf128(x) ((_Float128) __builtin_nans (x)) | |
| 90 | # endif | |
| 91 | ||
| 92 | #endif | |
| 93 | ||
| 94 | #endif /* _BITS_FLOATN_H */ |