This file is indexed.

/usr/riscv64-linux-gnu/include/bits/floatn-common.h is in libc6-dev-riscv64-cross 2.27-3ubuntu1cross1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  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
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
/* Macros to control TS 18661-3 glibc features where the same
   definitions are appropriate for all platforms.
   Copyright (C) 2017-2018 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
   <http://www.gnu.org/licenses/>.  */

#ifndef _BITS_FLOATN_COMMON_H
#define _BITS_FLOATN_COMMON_H

#include <features.h>
#include <bits/long-double.h>

/* This header should be included at the bottom of each bits/floatn.h.
   It defines the following macros for each _FloatN and _FloatNx type,
   where the same definitions, or definitions based only on the macros
   in bits/floatn.h, are appropriate for all glibc configurations.  */

/* Defined to 1 if the current compiler invocation provides a
   floating-point type with the right format for this type, and this
   glibc includes corresponding *fN or *fNx interfaces for it.  */
#define __HAVE_FLOAT16 0
#define __HAVE_FLOAT32 1
#define __HAVE_FLOAT64 1
#define __HAVE_FLOAT32X 1
#define __HAVE_FLOAT128X 0

/* Defined to 1 if the corresponding __HAVE_<type> macro is 1 and the
   type is the first with its format in the sequence of (the default
   choices for) float, double, long double, _Float16, _Float32,
   _Float64, _Float128, _Float32x, _Float64x, _Float128x for this
   glibc; that is, if functions present once per floating-point format
   rather than once per type are present for this type.

   All configurations supported by glibc have _Float32 the same format
   as float, _Float64 and _Float32x the same format as double, the
   _Float64x the same format as either long double or _Float128.  No
   configurations support _Float128x or, as of GCC 7, have compiler
   support for a type meeting the requirements for _Float128x.  */
#define __HAVE_DISTINCT_FLOAT16 __HAVE_FLOAT16
#define __HAVE_DISTINCT_FLOAT32 0
#define __HAVE_DISTINCT_FLOAT64 0
#define __HAVE_DISTINCT_FLOAT32X 0
#define __HAVE_DISTINCT_FLOAT64X 0
#define __HAVE_DISTINCT_FLOAT128X __HAVE_FLOAT128X

/* Defined to 1 if any _FloatN or _FloatNx types that are not
   ABI-distinct are however distinct types at the C language level (so
   for the purposes of __builtin_types_compatible_p and _Generic).  */
#if __GNUC_PREREQ (7, 0) && !defined __cplusplus
# define __HAVE_FLOATN_NOT_TYPEDEF 1
#else
# define __HAVE_FLOATN_NOT_TYPEDEF 0
#endif

#ifndef __ASSEMBLER__

/* Defined to concatenate the literal suffix to be used with _FloatN
   or _FloatNx types, if __HAVE_<type> is 1.  The corresponding
   literal suffixes exist since GCC 7, for C only.  */
# if __HAVE_FLOAT16
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
/* No corresponding suffix available for this type.  */
#   define __f16(x) ((_Float16) x##f)
#  else
#   define __f16(x) x##f16
#  endif
# endif

# if __HAVE_FLOAT32
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   define __f32(x) x##f
#  else
#   define __f32(x) x##f32
#  endif
# endif

# if __HAVE_FLOAT64
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   ifdef __NO_LONG_DOUBLE_MATH
#    define __f64(x) x##l
#   else
#    define __f64(x) x
#   endif
#  else
#   define __f64(x) x##f64
#  endif
# endif

# if __HAVE_FLOAT32X
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   define __f32x(x) x
#  else
#   define __f32x(x) x##f32x
#  endif
# endif

# if __HAVE_FLOAT64X
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   if __HAVE_FLOAT64X_LONG_DOUBLE
#    define __f64x(x) x##l
#   else
#    define __f64x(x) __f128 (x)
#   endif
#  else
#   define __f64x(x) x##f64x
#  endif
# endif

# if __HAVE_FLOAT128X
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   error "_Float128X supported but no constant suffix"
#  else
#   define __f128x(x) x##f128x
#  endif
# endif

/* Defined to a complex type if __HAVE_<type> is 1.  */
# if __HAVE_FLOAT16
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef _Complex float __cfloat16 __attribute__ ((__mode__ (__HC__)));
#   define __CFLOAT16 __cfloat16
#  else
#   define __CFLOAT16 _Complex _Float16
#  endif
# endif

# if __HAVE_FLOAT32
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   define __CFLOAT32 _Complex float
#  else
#   define __CFLOAT32 _Complex _Float32
#  endif
# endif

# if __HAVE_FLOAT64
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   ifdef __NO_LONG_DOUBLE_MATH
#    define __CFLOAT64 _Complex long double
#   else
#    define __CFLOAT64 _Complex double
#   endif
#  else
#   define __CFLOAT64 _Complex _Float64
#  endif
# endif

# if __HAVE_FLOAT32X
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   define __CFLOAT32X _Complex double
#  else
#   define __CFLOAT32X _Complex _Float32x
#  endif
# endif

# if __HAVE_FLOAT64X
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   if __HAVE_FLOAT64X_LONG_DOUBLE
#    define __CFLOAT64X _Complex long double
#   else
#    define __CFLOAT64X __CFLOAT128
#   endif
#  else
#   define __CFLOAT64X _Complex _Float64x
#  endif
# endif

# if __HAVE_FLOAT128X
#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   error "_Float128X supported but no complex type"
#  else
#   define __CFLOAT128X _Complex _Float128x
#  endif
# endif

/* The remaining of this file provides support for older compilers.  */
# if __HAVE_FLOAT16

#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef float _Float16 __attribute__ ((__mode__ (__HF__)));
#  endif

#  if !__GNUC_PREREQ (7, 0)
#   define __builtin_huge_valf16() ((_Float16) __builtin_huge_val ())
#   define __builtin_inff16() ((_Float16) __builtin_inf ())
#   define __builtin_nanf16(x) ((_Float16) __builtin_nan (x))
#   define __builtin_nansf16(x) ((_Float16) __builtin_nans (x))
#  endif

# endif

# if __HAVE_FLOAT32

#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef float _Float32;
#  endif

#  if !__GNUC_PREREQ (7, 0)
#   define __builtin_huge_valf32() (__builtin_huge_valf ())
#   define __builtin_inff32() (__builtin_inff ())
#   define __builtin_nanf32(x) (__builtin_nanf (x))
#   define __builtin_nansf32(x) (__builtin_nansf (x))
#  endif

# endif

# if __HAVE_FLOAT64

/* If double, long double and _Float64 all have the same set of
   values, TS 18661-3 requires the usual arithmetic conversions on
   long double and _Float64 to produce _Float64.  For this to be the
   case when building with a compiler without a distinct _Float64
   type, _Float64 must be a typedef for long double, not for
   double.  */

#  ifdef __NO_LONG_DOUBLE_MATH

#   if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef long double _Float64;
#   endif

#   if !__GNUC_PREREQ (7, 0)
#    define __builtin_huge_valf64() (__builtin_huge_vall ())
#    define __builtin_inff64() (__builtin_infl ())
#    define __builtin_nanf64(x) (__builtin_nanl (x))
#    define __builtin_nansf64(x) (__builtin_nansl (x))
#   endif

#  else

#   if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef double _Float64;
#   endif

#   if !__GNUC_PREREQ (7, 0)
#    define __builtin_huge_valf64() (__builtin_huge_val ())
#    define __builtin_inff64() (__builtin_inf ())
#    define __builtin_nanf64(x) (__builtin_nan (x))
#    define __builtin_nansf64(x) (__builtin_nans (x))
#   endif

#  endif

# endif

# if __HAVE_FLOAT32X

#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef double _Float32x;
#  endif

#  if !__GNUC_PREREQ (7, 0)
#   define __builtin_huge_valf32x() (__builtin_huge_val ())
#   define __builtin_inff32x() (__builtin_inf ())
#   define __builtin_nanf32x(x) (__builtin_nan (x))
#   define __builtin_nansf32x(x) (__builtin_nans (x))
#  endif

# endif

# if __HAVE_FLOAT64X

#  if __HAVE_FLOAT64X_LONG_DOUBLE

#   if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef long double _Float64x;
#   endif

#   if !__GNUC_PREREQ (7, 0)
#    define __builtin_huge_valf64x() (__builtin_huge_vall ())
#    define __builtin_inff64x() (__builtin_infl ())
#    define __builtin_nanf64x(x) (__builtin_nanl (x))
#    define __builtin_nansf64x(x) (__builtin_nansl (x))
#   endif

#  else

#   if !__GNUC_PREREQ (7, 0) || defined __cplusplus
typedef _Float128 _Float64x;
#   endif

#   if !__GNUC_PREREQ (7, 0)
#    define __builtin_huge_valf64x() (__builtin_huge_valf128 ())
#    define __builtin_inff64x() (__builtin_inff128 ())
#    define __builtin_nanf64x(x) (__builtin_nanf128 (x))
#    define __builtin_nansf64x(x) (__builtin_nansf128 (x))
#   endif

#  endif

# endif

# if __HAVE_FLOAT128X

#  if !__GNUC_PREREQ (7, 0) || defined __cplusplus
#   error "_Float128x supported but no type"
#  endif

#  if !__GNUC_PREREQ (7, 0)
#   define __builtin_huge_valf128x() ((_Float128x) __builtin_huge_val ())
#   define __builtin_inff128x() ((_Float128x) __builtin_inf ())
#   define __builtin_nanf128x(x) ((_Float128x) __builtin_nan (x))
#   define __builtin_nansf128x(x) ((_Float128x) __builtin_nans (x))
#  endif

# endif

#endif /* !__ASSEMBLER__.  */

#endif /* _BITS_FLOATN_COMMON_H */