4 #define TMOD(x) ((x)<0?(x)+24:((x)>=24?(x)-24:(x)))
5 #define DAYSOFF(x) ((x)<0?"(-1) ":((x)>=24?"(+1) ":""))
7 #define HOURS(h) ((int)(floor(h)))
8 #define MINUTES(h) ((int)(60*(h-floor(h))))
11 #define ABS(x) ((x)<0?-(x):(x))
17 #define days_since_2000_Jan_0(y,m,d) \
18 (367L*(y)-((7*((y)+(((m)+9)/12)))/4)+((275*(m))/9)+(d)-730530L)
23 #define PI 3.1415926535897932384
26 #define RADEG ( 180.0 / PI )
27 #define DEGRAD ( PI / 180.0 )
31 #define sind(x) sin((x)*DEGRAD)
32 #define cosd(x) cos((x)*DEGRAD)
33 #define tand(x) tan((x)*DEGRAD)
35 #define atand(x) (RADEG*atan(x))
36 #define asind(x) (RADEG*asin(x))
37 #define acosd(x) (RADEG*acos(x))
38 #define atan2d(y,x) (RADEG*atan2(y,x))
52 #define day_length(year,month,day,lon,lat) \
53 __daylen__( year, month, day, lon, lat, -50.0/60.0, 1 )
58 #define day_civil_twilight_length(year,month,day,lon,lat) \
59 __daylen__( year, month, day, lon, lat, -6.0, 0 )
64 #define day_nautical_twilight_length(year,month,day,lon,lat) \
65 __daylen__( year, month, day, lon, lat, -12.0, 0 )
70 #define day_astronomical_twilight_length(year,month,day,lon,lat) \
71 __daylen__( year, month, day, lon, lat, -18.0, 0 )
78 #define sun_rise_set(year,month,day,lon,lat,rise,set) \
79 __sunriset__( year, month, day, lon, lat, -35.0/60.0, 1, rise, set )
84 #define civil_twilight(year,month,day,lon,lat,start,end) \
85 __sunriset__( year, month, day, lon, lat, -6.0, 0, start, end )
90 #define nautical_twilight(year,month,day,lon,lat,start,end) \
91 __sunriset__( year, month, day, lon, lat, -12.0, 0, start, end )
96 #define astronomical_twilight(year,month,day,lon,lat,start,end) \
97 __sunriset__( year, month, day, lon, lat, -18.0, 0, start, end )
102 double __daylen__(
int year,
int month,
int day,
double lon,
double lat,
103 double altit,
int upper_limb );
105 int __sunriset__(
int year,
int month,
int day,
double lon,
double lat,
106 double altit,
int upper_limb,
double *rise,
double *set );
108 void sunpos(
double d,
double *lon,
double *r );
110 void sun_RA_dec(
double d,
double *RA,
double *dec,
double *r );
114 double rev180(
double x );
116 double GMST0(
double d );
struct triple lng lat
Definition: garmin_img.c:0
double __daylen__(int year, int month, int day, double lon, double lat, double altit, int upper_limb)
Definition: sunriset.c:112
void sunpos(double d, double *lon, double *r)
Definition: sunriset.c:177
double revolution(double x)
Definition: sunriset.c:245
int __sunriset__(int year, int month, int day, double lon, double lat, double altit, int upper_limb, double *rise, double *set)
Definition: sunriset.c:24
double rev180(double x)
Definition: sunriset.c:253
double GMST0(double d)
Definition: sunriset.c:288
const char * timezone_name
void sun_RA_dec(double d, double *RA, double *dec, double *r)
Definition: sunriset.c:209