#ifndef __astro_h
#define __astro_h

#include <reg167.h>
#include <stdarg.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <math.h>
#include "global.h"




#ifndef PI
#define PI 3.14159265358979323846
#endif


#define STARDAYSECONDS	86164.0
#define HOURSECONDS		3600.0
#define HOUR24SECONDS   86400.0


#define rad(x)  	((x)*PI/180.0)
#define deg(x)  	((x)*180.0/PI )

#define hdeg(x) 	((x)*15.0)
#define degh(x) 	((x)/15.0)
#define hrad(x)     rad(hdeg(x))

#define arctohs(a,s) ((a)/(s))
#define hstoarc(a,s) ((a)*(s))

#define degtoarc(x) ((x)*3600)
#define arctodeg(x) ((x)/3600)

#define degtoarc10(x) ((x)*36000)
#define arc10todeg(x) ((x)/36000)

#define degtoarc100(x) ((x)*360000)
#define arc100todeg(x) ((x)/360000)


#define hourstosecs(x)		((x)*3600.0)
#define hourstomillis(x)	((x)*3600.0*1000.0)
#define secstohours(x)		((x)/3600.0)
#define millistohours(x)	((x)/3600.0/1000.0)

#define circle_radius(x,y)	(sqrt(((x)*(x))+((y)*(y))));
#define circle_circumf(r)   ((r)*2.0*PI)
#define circle_angle(b,u)	(((b)/(u))*360.0)
	

#define ARC0 	0.0
#define ARC45   162000.0
#define ARC90	324000.0
#define ARC135	486000.0
#define ARC180	648000.0
#define ARC225  810000.0
#define ARC270	972000.0
#define ARC315	1134000.0
#define ARC360	1296000.0

#define ARC10_000	0
#define ARC10_045	1620000
#define ARC10_090	3240000
#define ARC10_135	4860000
#define ARC10_180	6480000
#define ARC10_225	8100000
#define ARC10_270	9720000
#define ARC10_315	11340000
#define ARC10_360	12960000



/*
  This calculates and sets GAST,and LAST.
  YEAR,MONTH,DAY,MINUTE,SECOND,MSECOND
  must contain correct time before.
  Also LONGITUTE must contain correct value.
*/
extern void cCurrentStarTime( void );


/*
  Calculates Rektazension/Declination-kooordinates to azimuth/altitude-koordinates
  for the local time, and place.
  This sets KOOR_AZ, KOOR_ALT ( as floatnumbers of degrees )
  KOOR_RA must be set as hours
  KOOR_DEC dec as degrees.
  the current local startime ( LAST ), must be set before
  by calling cCurrentStartTime
  Also LATITUDE must contain correct value.
*/
extern void cAzAlt( void );


/*
  Calculates Azimut/Altitude-kooordinates to Rectaszension/Declination-koordinates
  for the local time, and place.
  This KOOR_RA, KOOR_DEC ( as floatnumbers of Hours/degrees )
  KOOR_AZ, and KOOR_ALT must be set as floatnumber of degrees.
  The current startime LAST must be set before by calling cCurrentStarTime, also
  the LATITUDE.
 */
extern void cRaDec( void );



/*
	converts a RA-Koordinate ( floatnumber of hours )
	to a long value, representing the value as 1/10 arcseconds
*/
extern long dHourslArc10( double val );



/*
	converts a AZ/ALT, or DEC-Koordinate ( floatnumber of degrees )
	to a long value, representing the value as 1/10 arcseconds.
*/
extern long dDegreeslArc10( double val );



/*
	converts a long, representing a RA-Koordinate as 1/10 of arcseconds
	to its aequevalent floatnumber of hours, - stored as double.
*/
extern double lArc10dHours( long val );



/*
	converts a AZ/ALT, or DEC-Koordinate, represented as 1/10 of arcseconds,
	to its aequevalent flotnumber of degrees, - stored as double.
*/
extern double lArc10dDegrees( long val );



/*
	val must representing a value of 1/10 arcseconds.
	returns a number, representing
	the 360 degrees-sector, which is fullfilled by the koordinate.
	0 = 0         -  3.239.999
	1 = 3.240.000 -  6.479.999
	2 = 6.480.000 -  9.719.999
	3 = 9.720.000 - 12.959.999
*/
extern int arc10Sector( long val );


/*
	val must representing a floatnumber of degrees.
	returns a number, representing
	the 360 degrees-sector, which is fullfilled by the koordinate.
	0 = 000 - 089.999999
	1 = 090 - 179.999999
	2 = 180 - 269.999999
	3 = 270 - 359.999999
*/
extern int degreesSector( double val );




#endif