Stellarium  0.90.0
sidereal_time.h
1 /*
2 Copyright (C) 2000 Liam Girdwood <liam@nova-ioe.org>
3 Copyright (C) 2003 Fabien Chereau
4 Copyright (C) 2010 Georg Zotti (parts)
5 
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Library General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10 
11 This program 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
14 GNU General Public License for more details.
15 
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
19 */
20 
21 #ifndef _STELLASTRO_H
22 #define _STELLASTRO_H
23 
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27 
28 /* Calculate mean sidereal time from date. */
29 double get_mean_sidereal_time (double JD, double JDE);
30 
31 /* Calculate apparent sidereal time from date. We need JD(UT) and JDE(TT) here to accurately compute nutation. */
32 double get_apparent_sidereal_time (double JD, double JDE);
33 /* Calculate mean ecliptical obliquity in degrees. */
34 // double get_mean_ecliptical_obliquity(double JDE);
35 /* Calculate nutation in longitude in degrees. */
36 //double get_nutation_longitude(double JDE);
37 
38 #ifdef __cplusplus
39 }
40 #endif
41 
42 
43 #endif /* _STELLASTRO_H */