mirror of
https://github.com/php/php-src.git
synced 2024-12-14 20:33:36 +08:00
76 lines
4.0 KiB
C
76 lines
4.0 KiB
C
/*
|
|
* The MIT License (MIT)
|
|
*
|
|
* Copyright (c) 2015 Derick Rethans
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
/* 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 )
|
|
|