/[PAMELA software]/yodaUtility/sgp4/globals.cpp
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Annotation of /yodaUtility/sgp4/globals.cpp

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Revision 1.1.1.1 - (hide annotations) (download) (vendor branch)
Sun Apr 30 11:08:15 2006 UTC (18 years, 7 months ago) by kusanagi
Branch: MAIN
CVS Tags: yodaUtility2_0/00, yodaUtility1_0/00, yodaUtility2_2/00, yodaUtility2_1/00, HEAD
Changes since 1.1: +0 -0 lines
Various utilities for the yoda environment and its related softwares.
YFile 	   	- Inheriths from TFile     - Add custom features to a TFile object.
YException 	- Inheriths from exception - YODA specific Exceptions.
YMcmd	   	- Decoder for the Mcmd packets.
YSQLConnection 	- Singletn class for DB connections.
yodaUtility     - Various functions.
sgp4		- C++ NORAD SGP4/SDP4 Implementation - Developed by Michael F. Henry.

1 kusanagi 1.1 //
2     // globals.cpp
3     //
4     #include "stdafx.h"
5     #include "globals.h"
6    
7     //////////////////////////////////////////////////////////////////////////////
8     double sqr(const double x)
9     {
10     return (x * x);
11     }
12    
13     //////////////////////////////////////////////////////////////////////////////
14     double Fmod2p(const double arg)
15     {
16     double modu = fmod(arg, TWOPI);
17    
18     if (modu < 0.0)
19     modu += TWOPI;
20    
21     return modu;
22     }
23    
24     //////////////////////////////////////////////////////////////////////////////
25     // AcTan()
26     // ArcTangent of sin(x) / cos(x). The advantage of this function over arctan()
27     // is that it returns the correct quadrant of the angle.
28     double AcTan(const double sinx, const double cosx)
29     {
30     double ret;
31    
32     if (cosx == 0.0)
33     {
34     if (sinx > 0.0)
35     ret = PI / 2.0;
36     else
37     ret = 3.0 * PI / 2.0;
38     }
39     else
40     {
41     if (cosx > 0.0)
42     ret = atan(sinx / cosx);
43     else
44     ret = PI + atan(sinx / cosx);
45     }
46    
47     return ret;
48     }
49    
50     //////////////////////////////////////////////////////////////////////////////
51     double rad2deg(const double r)
52     {
53     const double DEG_PER_RAD = 180.0 / PI;
54     return r * DEG_PER_RAD;
55     }
56    
57     //////////////////////////////////////////////////////////////////////////////
58     double deg2rad(const double d)
59     {
60     const double RAD_PER_DEG = PI / 180.0;
61     return d * RAD_PER_DEG;
62     }
63    

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