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Diffstat (limited to 'ext/date/lib/astro.h')
| -rw-r--r-- | ext/date/lib/astro.h | 51 |
1 files changed, 0 insertions, 51 deletions
diff --git a/ext/date/lib/astro.h b/ext/date/lib/astro.h deleted file mode 100644 index 7b85c76b74..0000000000 --- a/ext/date/lib/astro.h +++ /dev/null @@ -1,51 +0,0 @@ -/* This macro computes the length of the day, from sunrise to sunset. */ -/* Sunrise/set is considered to occur when the Sun's upper limb is */ -/* 35 arc minutes below the horizon (this accounts for the refraction */ -/* of the Earth's atmosphere). */ -#define day_length(year,month,day,lon,lat) \ - __daylen__( year, month, day, lon, lat, -35.0/60.0, 1 ) - -/* This macro computes the length of the day, including civil twilight. */ -/* Civil twilight starts/ends when the Sun's center is 6 degrees below */ -/* the horizon. */ -#define day_civil_twilight_length(year,month,day,lon,lat) \ - __daylen__( year, month, day, lon, lat, -6.0, 0 ) - -/* This macro computes the length of the day, incl. nautical twilight. */ -/* Nautical twilight starts/ends when the Sun's center is 12 degrees */ -/* below the horizon. */ -#define day_nautical_twilight_length(year,month,day,lon,lat) \ - __daylen__( year, month, day, lon, lat, -12.0, 0 ) - -/* This macro computes the length of the day, incl. astronomical twilight. */ -/* Astronomical twilight starts/ends when the Sun's center is 18 degrees */ -/* below the horizon. */ -#define day_astronomical_twilight_length(year,month,day,lon,lat) \ - __daylen__( year, month, day, lon, lat, -18.0, 0 ) - - -/* This macro computes times for sunrise/sunset. */ -/* Sunrise/set is considered to occur when the Sun's upper limb is */ -/* 35 arc minutes below the horizon (this accounts for the refraction */ -/* of the Earth's atmosphere). */ -#define timelib_astro_sun_rise_set(ts,lon,lat,hrise,hset,rise,set) \ - timelib_astro_rise_set_altitude( ts, lon, lat, -35.0/60.0, 1, hrise, hset, rise, set ) - -/* This macro computes the start and end times of civil twilight. */ -/* Civil twilight starts/ends when the Sun's center is 6 degrees below */ -/* the horizon. */ -#define civil_twilight(ts,lon,lat,start,end) \ - timelib_astro_rise_set_altitude( ts, lon, lat, -6.0, 0, start, end ) - -/* This macro computes the start and end times of nautical twilight. */ -/* Nautical twilight starts/ends when the Sun's center is 12 degrees */ -/* below the horizon. */ -#define nautical_twilight(ts,lon,lat,start,end) \ - timelib_astro_rise_set_altitude( ts, lon, lat, -12.0, 0, start, end ) - -/* This macro computes the start and end times of astronomical twilight. */ -/* Astronomical twilight starts/ends when the Sun's center is 18 degrees */ -/* below the horizon. */ -#define astronomical_twilight(ts,lon,lat,start,end) \ - timelib_astro_rise_set_altitude( ts, lon, lat, -18.0, 0, start, end ) - |