1  /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
 2  /*
 3      Gpredict: Real-time satellite tracking and orbit prediction program
 4  
 5      Copyright (C)  2001-2009  Alexandru Csete, OZ9AEC.
 6  
 7      Authors: Alexandru Csete <oz9aec@gmail.com>
 8  
 9  
10      Comments, questions and bugreports should be submitted via
11      http://sourceforge.net/projects/gpredict/
12      More details can be found at the project home page:
13  
14              http://gpredict.oz9aec.net/
15   
16      This program is free software; you can redistribute it and/or modify
17      it under the terms of the GNU General Public License as published by
18      the Free Software Foundation; either version 2 of the License, or
19      (at your option) any later version.
20    
21      This program is distributed in the hope that it will be useful,
22      but WITHOUT ANY WARRANTY; without even the implied warranty of
23      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
24      GNU General Public License for more details.
25    
26      You should have received a copy of the GNU General Public License
27      along with this program; if not, visit http://www.fsf.org/
28  */
29  #ifndef LOCATOR_H
30  #define LOCATOR_H 1
31  
32  #define RIG_OK     0
33  #define RIG_EINVAL 1
34  
35  
36  int    qrb                (double lon1, double lat1, double lon2, double lat2,
37                             double *distance, double *azimuth);
38  
39  double distance_long_path (double distance);
40  
41  double azimuth_long_path  (double azimuth);
42  
43  int    longlat2locator    (double longitude, double latitude,
44                             char *locator, int pair_count);
45  
46  int    locator2longlat    (double *longitude, double *latitude,
47                             const char *locator);
48  
49  double dms2dec            (int degrees, int minutes, double seconds, int sw);
50  
51  int    dec2dms            (double dec,
52                             int *degrees, int *minutes, double *seconds, int *sw);
53  
54  int    dec2dmmm           (double dec, int *degrees, double *minutes, int *sw);
55  
56  double dmmm2dec           (int degrees, double minutes, int sw);
57  
58  
59  #endif