modernc.org/cc@v1.0.1/v2/headers/linux_386/usr/include/i386-linux-gnu/bits/floatn-common.h (about) 1 /* Macros to control TS 18661-3 glibc features where the same 2 definitions are appropriate for all platforms. 3 Copyright (C) 2017-2018 Free Software Foundation, Inc. 4 This file is part of the GNU C Library. 5 6 The GNU C Library is free software; you can redistribute it and/or 7 modify it under the terms of the GNU Lesser General Public 8 License as published by the Free Software Foundation; either 9 version 2.1 of the License, or (at your option) any later version. 10 11 The GNU C Library is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 Lesser General Public License for more details. 15 16 You should have received a copy of the GNU Lesser General Public 17 License along with the GNU C Library; if not, see 18 <http://www.gnu.org/licenses/>. */ 19 20 #ifndef _BITS_FLOATN_COMMON_H 21 #define _BITS_FLOATN_COMMON_H 22 23 #include <features.h> 24 #include <bits/long-double.h> 25 26 /* This header should be included at the bottom of each bits/floatn.h. 27 It defines the following macros for each _FloatN and _FloatNx type, 28 where the same definitions, or definitions based only on the macros 29 in bits/floatn.h, are appropriate for all glibc configurations. */ 30 31 /* Defined to 1 if the current compiler invocation provides a 32 floating-point type with the right format for this type, and this 33 glibc includes corresponding *fN or *fNx interfaces for it. */ 34 #define __HAVE_FLOAT16 0 35 #define __HAVE_FLOAT32 1 36 #define __HAVE_FLOAT64 1 37 #define __HAVE_FLOAT32X 1 38 #define __HAVE_FLOAT128X 0 39 40 /* Defined to 1 if the corresponding __HAVE_<type> macro is 1 and the 41 type is the first with its format in the sequence of (the default 42 choices for) float, double, long double, _Float16, _Float32, 43 _Float64, _Float128, _Float32x, _Float64x, _Float128x for this 44 glibc; that is, if functions present once per floating-point format 45 rather than once per type are present for this type. 46 47 All configurations supported by glibc have _Float32 the same format 48 as float, _Float64 and _Float32x the same format as double, the 49 _Float64x the same format as either long double or _Float128. No 50 configurations support _Float128x or, as of GCC 7, have compiler 51 support for a type meeting the requirements for _Float128x. */ 52 #define __HAVE_DISTINCT_FLOAT16 __HAVE_FLOAT16 53 #define __HAVE_DISTINCT_FLOAT32 0 54 #define __HAVE_DISTINCT_FLOAT64 0 55 #define __HAVE_DISTINCT_FLOAT32X 0 56 #define __HAVE_DISTINCT_FLOAT64X 0 57 #define __HAVE_DISTINCT_FLOAT128X __HAVE_FLOAT128X 58 59 /* Defined to 1 if any _FloatN or _FloatNx types that are not 60 ABI-distinct are however distinct types at the C language level (so 61 for the purposes of __builtin_types_compatible_p and _Generic). */ 62 #if __GNUC_PREREQ (7, 0) && !defined __cplusplus 63 # define __HAVE_FLOATN_NOT_TYPEDEF 1 64 #else 65 # define __HAVE_FLOATN_NOT_TYPEDEF 0 66 #endif 67 68 #ifndef __ASSEMBLER__ 69 70 /* Defined to concatenate the literal suffix to be used with _FloatN 71 or _FloatNx types, if __HAVE_<type> is 1. The corresponding 72 literal suffixes exist since GCC 7, for C only. */ 73 # if __HAVE_FLOAT16 74 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 75 /* No corresponding suffix available for this type. */ 76 # define __f16(x) ((_Float16) x##f) 77 # else 78 # define __f16(x) x##f16 79 # endif 80 # endif 81 82 # if __HAVE_FLOAT32 83 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 84 # define __f32(x) x##f 85 # else 86 # define __f32(x) x##f32 87 # endif 88 # endif 89 90 # if __HAVE_FLOAT64 91 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 92 # ifdef __NO_LONG_DOUBLE_MATH 93 # define __f64(x) x##l 94 # else 95 # define __f64(x) x 96 # endif 97 # else 98 # define __f64(x) x##f64 99 # endif 100 # endif 101 102 # if __HAVE_FLOAT32X 103 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 104 # define __f32x(x) x 105 # else 106 # define __f32x(x) x##f32x 107 # endif 108 # endif 109 110 # if __HAVE_FLOAT64X 111 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 112 # if __HAVE_FLOAT64X_LONG_DOUBLE 113 # define __f64x(x) x##l 114 # else 115 # define __f64x(x) __f128 (x) 116 # endif 117 # else 118 # define __f64x(x) x##f64x 119 # endif 120 # endif 121 122 # if __HAVE_FLOAT128X 123 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 124 # error "_Float128X supported but no constant suffix" 125 # else 126 # define __f128x(x) x##f128x 127 # endif 128 # endif 129 130 /* Defined to a complex type if __HAVE_<type> is 1. */ 131 # if __HAVE_FLOAT16 132 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 133 typedef _Complex float __cfloat16 __attribute__ ((__mode__(__HC__))); 134 # define __CFLOAT16 __cfloat16 135 # else 136 # define __CFLOAT16 _Complex _Float16 137 # endif 138 # endif 139 140 # if __HAVE_FLOAT32 141 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 142 # define __CFLOAT32 _Complex float 143 # else 144 # define __CFLOAT32 _Complex _Float32 145 # endif 146 # endif 147 148 # if __HAVE_FLOAT64 149 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 150 # ifdef __NO_LONG_DOUBLE_MATH 151 # define __CFLOAT64 _Complex long double 152 # else 153 # define __CFLOAT64 _Complex double 154 # endif 155 # else 156 # define __CFLOAT64 _Complex _Float64 157 # endif 158 # endif 159 160 # if __HAVE_FLOAT32X 161 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 162 # define __CFLOAT32X _Complex double 163 # else 164 # define __CFLOAT32X _Complex _Float32x 165 # endif 166 # endif 167 168 # if __HAVE_FLOAT64X 169 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 170 # if __HAVE_FLOAT64X_LONG_DOUBLE 171 # define __CFLOAT64X _Complex long double 172 # else 173 # define __CFLOAT64X __CFLOAT128 174 # endif 175 # else 176 # define __CFLOAT64X _Complex _Float64x 177 # endif 178 # endif 179 180 # if __HAVE_FLOAT128X 181 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 182 # error "_Float128X supported but no complex type" 183 # else 184 # define __CFLOAT128X _Complex _Float128x 185 # endif 186 # endif 187 188 /* The remaining of this file provides support for older compilers. */ 189 # if __HAVE_FLOAT16 190 191 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 192 typedef float _Float16 __attribute__ ((__mode__(__HF__))); 193 # endif 194 195 # if !__GNUC_PREREQ (7, 0) 196 # define __builtin_huge_valf16() ((_Float16) __builtin_huge_val ()) 197 # define __builtin_inff16() ((_Float16) __builtin_inf ()) 198 # define __builtin_nanf16(x) ((_Float16) __builtin_nan (x)) 199 # define __builtin_nansf16(x) ((_Float16) __builtin_nans (x)) 200 # endif 201 202 # endif 203 204 # if __HAVE_FLOAT32 205 206 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 207 typedef float _Float32; 208 # endif 209 210 # if !__GNUC_PREREQ (7, 0) 211 # define __builtin_huge_valf32() (__builtin_huge_valf ()) 212 # define __builtin_inff32() (__builtin_inff ()) 213 # define __builtin_nanf32(x) (__builtin_nanf (x)) 214 # define __builtin_nansf32(x) (__builtin_nansf (x)) 215 # endif 216 217 # endif 218 219 # if __HAVE_FLOAT64 220 221 /* If double, long double and _Float64 all have the same set of 222 values, TS 18661-3 requires the usual arithmetic conversions on 223 long double and _Float64 to produce _Float64. For this to be the 224 case when building with a compiler without a distinct _Float64 225 type, _Float64 must be a typedef for long double, not for 226 double. */ 227 228 # ifdef __NO_LONG_DOUBLE_MATH 229 230 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 231 typedef long double _Float64; 232 # endif 233 234 # if !__GNUC_PREREQ (7, 0) 235 # define __builtin_huge_valf64() (__builtin_huge_vall ()) 236 # define __builtin_inff64() (__builtin_infl ()) 237 # define __builtin_nanf64(x) (__builtin_nanl (x)) 238 # define __builtin_nansf64(x) (__builtin_nansl (x)) 239 # endif 240 241 # else 242 243 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 244 typedef double _Float64; 245 # endif 246 247 # if !__GNUC_PREREQ (7, 0) 248 # define __builtin_huge_valf64() (__builtin_huge_val ()) 249 # define __builtin_inff64() (__builtin_inf ()) 250 # define __builtin_nanf64(x) (__builtin_nan (x)) 251 # define __builtin_nansf64(x) (__builtin_nans (x)) 252 # endif 253 254 # endif 255 256 # endif 257 258 # if __HAVE_FLOAT32X 259 260 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 261 typedef double _Float32x; 262 # endif 263 264 # if !__GNUC_PREREQ (7, 0) 265 # define __builtin_huge_valf32x() (__builtin_huge_val ()) 266 # define __builtin_inff32x() (__builtin_inf ()) 267 # define __builtin_nanf32x(x) (__builtin_nan (x)) 268 # define __builtin_nansf32x(x) (__builtin_nans (x)) 269 # endif 270 271 # endif 272 273 # if __HAVE_FLOAT64X 274 275 # if __HAVE_FLOAT64X_LONG_DOUBLE 276 277 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 278 typedef long double _Float64x; 279 # endif 280 281 # if !__GNUC_PREREQ (7, 0) 282 # define __builtin_huge_valf64x() (__builtin_huge_vall ()) 283 # define __builtin_inff64x() (__builtin_infl ()) 284 # define __builtin_nanf64x(x) (__builtin_nanl (x)) 285 # define __builtin_nansf64x(x) (__builtin_nansl (x)) 286 # endif 287 288 # else 289 290 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 291 typedef _Float128 _Float64x; 292 # endif 293 294 # if !__GNUC_PREREQ (7, 0) 295 # define __builtin_huge_valf64x() (__builtin_huge_valf128 ()) 296 # define __builtin_inff64x() (__builtin_inff128 ()) 297 # define __builtin_nanf64x(x) (__builtin_nanf128 (x)) 298 # define __builtin_nansf64x(x) (__builtin_nansf128 (x)) 299 # endif 300 301 # endif 302 303 # endif 304 305 # if __HAVE_FLOAT128X 306 307 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus 308 # error "_Float128x supported but no type" 309 # endif 310 311 # if !__GNUC_PREREQ (7, 0) 312 # define __builtin_huge_valf128x() ((_Float128x) __builtin_huge_val ()) 313 # define __builtin_inff128x() ((_Float128x) __builtin_inf ()) 314 # define __builtin_nanf128x(x) ((_Float128x) __builtin_nan (x)) 315 # define __builtin_nansf128x(x) ((_Float128x) __builtin_nans (x)) 316 # endif 317 318 # endif 319 320 #endif /* !__ASSEMBLER__. */ 321 322 #endif /* _BITS_FLOATN_COMMON_H */