This file is indexed.

/usr/include/erfam.h is in liberfa-dev 1.1.1-1.

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
#ifndef ERFAMHDEF
#define ERFAMHDEF

/*
**  - - - - - - - -
**   e r f a m . h
**  - - - - - - - -
**
**  Macros used by ERFA library.
**
**  Copyright (C) 2013-2014, NumFOCUS Foundation.
**  Derived, with permission, from the SOFA library.  See notes at end of file.
*/

/* Star-independent astrometry parameters */
typedef struct {
   double pmt;        /* PM time interval (SSB, Julian years) */
   double eb[3];      /* SSB to observer (vector, au) */
   double eh[3];      /* Sun to observer (unit vector) */
   double em;         /* distance from Sun to observer (au) */
   double v[3];       /* barycentric observer velocity (vector, c) */
   double bm1;        /* sqrt(1-|v|^2): reciprocal of Lorenz factor */
   double bpn[3][3];  /* bias-precession-nutation matrix */
   double along;      /* longitude + s' + dERA(DUT) (radians) */
   double phi;        /* geodetic latitude (radians) */
   double xpl;        /* polar motion xp wrt local meridian (radians) */
   double ypl;        /* polar motion yp wrt local meridian (radians) */
   double sphi;       /* sine of geodetic latitude */
   double cphi;       /* cosine of geodetic latitude */
   double diurab;     /* magnitude of diurnal aberration vector */
   double eral;       /* "local" Earth rotation angle (radians) */
   double refa;       /* refraction constant A (radians) */
   double refb;       /* refraction constant B (radians) */
} eraASTROM;
/* (Vectors eb, eh, em and v are all with respect to BCRS axes.) */

/* Body parameters for light deflection */
typedef struct {
   double bm;         /* mass of the body (solar masses) */
   double dl;         /* deflection limiter (radians^2/2) */
   double pv[2][3];   /* barycentric PV of the body (au, au/day) */
} eraLDBODY;

/* Pi */
#define ERFA_DPI (3.141592653589793238462643)

/* 2Pi */
#define ERFA_D2PI (6.283185307179586476925287)

/* Radians to degrees */
#define ERFA_DR2D (57.29577951308232087679815)

/* Degrees to radians */
#define ERFA_DD2R (1.745329251994329576923691e-2)

/* Radians to arcseconds */
#define ERFA_DR2AS (206264.8062470963551564734)

/* Arcseconds to radians */
#define ERFA_DAS2R (4.848136811095359935899141e-6)

/* Seconds of time to radians */
#define ERFA_DS2R (7.272205216643039903848712e-5)

/* Arcseconds in a full circle */
#define ERFA_TURNAS (1296000.0)

/* Milliarcseconds to radians */
#define ERFA_DMAS2R (ERFA_DAS2R / 1e3)

/* Length of tropical year B1900 (days) */
#define ERFA_DTY (365.242198781)

/* Seconds per day. */
#define ERFA_DAYSEC (86400.0)

/* Days per Julian year */
#define ERFA_DJY (365.25)

/* Days per Julian century */
#define ERFA_DJC (36525.0)

/* Days per Julian millennium */
#define ERFA_DJM (365250.0)

/* Reference epoch (J2000.0), Julian Date */
#define ERFA_DJ00 (2451545.0)

/* Julian Date of Modified Julian Date zero */
#define ERFA_DJM0 (2400000.5)

/* Reference epoch (J2000.0), Modified Julian Date */
#define ERFA_DJM00 (51544.5)

/* 1977 Jan 1.0 as MJD */
#define ERFA_DJM77 (43144.0)

/* TT minus TAI (s) */
#define ERFA_TTMTAI (32.184)

/* Astronomical unit (m) */
#define ERFA_DAU (149597870e3)

/* Speed of light (m/s) */
#define ERFA_CMPS 299792458.0

/* Light time for 1 au (s) */
#define ERFA_AULT 499.004782

/* Speed of light (AU per day) */
#define ERFA_DC (ERFA_DAYSEC / ERFA_AULT)

/* L_G = 1 - d(TT)/d(TCG) */
#define ERFA_ELG (6.969290134e-10)

/* L_B = 1 - d(TDB)/d(TCB), and TDB (s) at TAI 1977/1/1.0 */
#define ERFA_ELB (1.550519768e-8)
#define ERFA_TDB0 (-6.55e-5)

/* Schwarzschild radius of the Sun (au) */
/* = 2 * 1.32712440041e20 / (2.99792458e8)^2 / 1.49597870700e11 */
#define ERFA_SRS 1.97412574336e-8

/* ERFA_DINT(A) - truncate to nearest whole number towards zero (double) */
#define ERFA_DINT(A) ((A)<0.0?ceil(A):floor(A))

/* ERFA_DNINT(A) - round to nearest whole number (double) */
#define ERFA_DNINT(A) ((A)<0.0?ceil((A)-0.5):floor((A)+0.5))

/* ERFA_DSIGN(A,B) - magnitude of A with sign of B (double) */
#define ERFA_DSIGN(A,B) ((B)<0.0?-fabs(A):fabs(A))

/* max(A,B) - larger (most +ve) of two numbers (generic) */
#define ERFA_GMAX(A,B) (((A)>(B))?(A):(B))

/* min(A,B) - smaller (least +ve) of two numbers (generic) */
#define ERFA_GMIN(A,B) (((A)<(B))?(A):(B))

/* Reference ellipsoids */
#define ERFA_WGS84 1
#define ERFA_GRS80 2
#define ERFA_WGS72 3

#endif


/*----------------------------------------------------------------------
**  
**  
**  Copyright (C) 2013-2014, NumFOCUS Foundation.
**  All rights reserved.
**  
**  This library is derived, with permission, from the International
**  Astronomical Union's "Standards of Fundamental Astronomy" library,
**  available from http://www.iausofa.org.
**  
**  The ERFA version is intended to retain identical functionality to
**  the SOFA library, but made distinct through different function and
**  file names, as set out in the SOFA license conditions.  The SOFA
**  original has a role as a reference standard for the IAU and IERS,
**  and consequently redistribution is permitted only in its unaltered
**  state.  The ERFA version is not subject to this restriction and
**  therefore can be included in distributions which do not support the
**  concept of "read only" software.
**  
**  Although the intent is to replicate the SOFA API (other than
**  replacement of prefix names) and results (with the exception of
**  bugs;  any that are discovered will be fixed), SOFA is not
**  responsible for any errors found in this version of the library.
**  
**  If you wish to acknowledge the SOFA heritage, please acknowledge
**  that you are using a library derived from SOFA, rather than SOFA
**  itself.
**  
**  
**  TERMS AND CONDITIONS
**  
**  Redistribution and use in source and binary forms, with or without
**  modification, are permitted provided that the following conditions
**  are met:
**  
**  1 Redistributions of source code must retain the above copyright
**    notice, this list of conditions and the following disclaimer.
**  
**  2 Redistributions in binary form must reproduce the above copyright
**    notice, this list of conditions and the following disclaimer in
**    the documentation and/or other materials provided with the
**    distribution.
**  
**  3 Neither the name of the Standards Of Fundamental Astronomy Board,
**    the International Astronomical Union nor the names of its
**    contributors may be used to endorse or promote products derived
**    from this software without specific prior written permission.
**  
**  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
**  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
**  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
**  FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
**  COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
**  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
**  BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
**  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
**  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
**  LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
**  ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
**  POSSIBILITY OF SUCH DAMAGE.
**  
*/