This file is indexed.

/usr/include/x86_64-linux-gnu/bits/math-finite.h is in libc6-dev 2.27-3ubuntu1.

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
/* Entry points to finite-math-only compiler runs.
   Copyright (C) 2011-2018 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 _MATH_H
# error "Never use <bits/math-finite.h> directly; include <math.h> instead."
#endif

#define __REDIRFROM(...) __REDIRFROM_X(__VA_ARGS__)

#define __REDIRTO(...) __REDIRTO_X(__VA_ARGS__)

#define __MATH_REDIRCALL_X(from, args, to) \
  extern _Mdouble_ __REDIRECT_NTH (from, args, to)
#define __MATH_REDIRCALL(function, reentrant, args) \
  __MATH_REDIRCALL_X \
   (__REDIRFROM (function, reentrant), args, \
    __REDIRTO (function, reentrant))
#define __MATH_REDIRCALL_2(from, reentrant, args, to) \
  __MATH_REDIRCALL_X \
   (__REDIRFROM (from, reentrant), args, \
    __REDIRTO (to, reentrant))

#define __MATH_REDIRCALL_INTERNAL(function, reentrant, args) \
  __MATH_REDIRCALL_X \
   (__REDIRFROM (__CONCAT (__, function), \
		 __CONCAT (reentrant, _finite)), \
    args, __REDIRTO (function, _r))


/* acos.  */
__MATH_REDIRCALL (acos, , (_Mdouble_));

#if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
/* acosh.  */
__MATH_REDIRCALL (acosh, , (_Mdouble_));
#endif

/* asin.  */
__MATH_REDIRCALL (asin, , (_Mdouble_));

/* atan2.  */
__MATH_REDIRCALL (atan2, , (_Mdouble_, _Mdouble_));

#if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
/* atanh.  */
__MATH_REDIRCALL (atanh, , (_Mdouble_));
#endif

/* cosh.  */
__MATH_REDIRCALL (cosh, , (_Mdouble_));

/* exp.  */
__MATH_REDIRCALL (exp, , (_Mdouble_));

#if __GLIBC_USE (IEC_60559_FUNCS_EXT)
/* exp10.  */
__MATH_REDIRCALL (exp10, , (_Mdouble_));
#endif

#ifdef __USE_ISOC99
/* exp2.  */
__MATH_REDIRCALL (exp2, , (_Mdouble_));
#endif

/* fmod.  */
__MATH_REDIRCALL (fmod, , (_Mdouble_, _Mdouble_));

#if defined __USE_XOPEN || defined __USE_ISOC99
/* hypot.  */
__MATH_REDIRCALL (hypot, , (_Mdouble_, _Mdouble_));
#endif

#if (__MATH_DECLARING_DOUBLE && (defined __USE_MISC || defined __USE_XOPEN)) \
    || (!__MATH_DECLARING_DOUBLE && defined __USE_MISC)
/* j0.  */
__MATH_REDIRCALL (j0, , (_Mdouble_));

/* y0.  */
__MATH_REDIRCALL (y0, , (_Mdouble_));

/* j1.  */
__MATH_REDIRCALL (j1, , (_Mdouble_));

/* y1.  */
__MATH_REDIRCALL (y1, , (_Mdouble_));

/* jn.  */
__MATH_REDIRCALL (jn, , (int, _Mdouble_));

/* yn.  */
__MATH_REDIRCALL (yn, , (int, _Mdouble_));
#endif

#ifdef __USE_MISC
/* lgamma_r.  */
__MATH_REDIRCALL (lgamma, _r, (_Mdouble_, int *));
#endif

/* Redirect __lgammal_r_finite to __lgamma_r_finite when __NO_LONG_DOUBLE_MATH
   is set and to itself otherwise.  It also redirects __lgamma_r_finite and
   __lgammaf_r_finite to themselves.  */
__MATH_REDIRCALL_INTERNAL (lgamma, _r, (_Mdouble_, int *));

#if ((defined __USE_XOPEN || defined __USE_ISOC99) \
     && defined __extern_always_inline)
/* lgamma.  */
__extern_always_inline _Mdouble_
__NTH (__REDIRFROM (lgamma, ) (_Mdouble_ __d))
{
# if defined __USE_MISC || defined __USE_XOPEN
  return __REDIRTO (lgamma, _r) (__d, &signgam);
# else
  int __local_signgam = 0;
  return __REDIRTO (lgamma, _r) (__d, &__local_signgam);
# endif
}
#endif

#if ((defined __USE_MISC || (defined __USE_XOPEN && !defined __USE_XOPEN2K)) \
     && defined __extern_always_inline) && !__MATH_DECLARING_FLOATN
/* gamma.  */
__extern_always_inline _Mdouble_
__NTH (__REDIRFROM (gamma, ) (_Mdouble_ __d))
{
  return __REDIRTO (lgamma, _r) (__d, &signgam);
}
#endif

/* log.  */
__MATH_REDIRCALL (log, , (_Mdouble_));

/* log10.  */
__MATH_REDIRCALL (log10, , (_Mdouble_));

#ifdef __USE_ISOC99
/* log2.  */
__MATH_REDIRCALL (log2, , (_Mdouble_));
#endif

/* pow.  */
__MATH_REDIRCALL (pow, , (_Mdouble_, _Mdouble_));

#if defined __USE_XOPEN_EXTENDED || defined __USE_ISOC99
/* remainder.  */
__MATH_REDIRCALL (remainder, , (_Mdouble_, _Mdouble_));
#endif

#if ((__MATH_DECLARING_DOUBLE \
      && (defined __USE_MISC \
	  || (defined __USE_XOPEN_EXTENDED && !defined __USE_XOPEN2K8))) \
     || (!defined __MATH_DECLARE_LDOUBLE && defined __USE_MISC)) \
    && !__MATH_DECLARING_FLOATN
/* scalb.  */
__MATH_REDIRCALL (scalb, , (_Mdouble_, _Mdouble_));
#endif

/* sinh.  */
__MATH_REDIRCALL (sinh, , (_Mdouble_));

/* sqrt.  */
__MATH_REDIRCALL (sqrt, , (_Mdouble_));

#if defined __USE_ISOC99 && defined __extern_always_inline
/* tgamma.  */
extern _Mdouble_
__REDIRFROM (__gamma, _r_finite) (_Mdouble_, int *);

__extern_always_inline _Mdouble_
__NTH (__REDIRFROM (tgamma, ) (_Mdouble_ __d))
{
  int __local_signgam = 0;
  _Mdouble_ __res = __REDIRTO (gamma, _r) (__d, &__local_signgam);
  return __local_signgam < 0 ? -__res : __res;
}
#endif

#undef __REDIRFROM
#undef __REDIRTO
#undef __MATH_REDIRCALL
#undef __MATH_REDIRCALL_2
#undef __MATH_REDIRCALL_INTERNAL
#undef __MATH_REDIRCALL_X