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/*-------------------------------------------------------------------- |
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* $Id: sun.h,v 1.4 2004/01/12 17:18:04 arve Exp $ |
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* |
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* This file is part of libRadtran. |
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* Copyright (c) 1997-2001 by Arve Kylling and Bernhard Mayer. |
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* |
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* ######### Contact info: http://www.libradtran.org ######### |
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* |
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* This program is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU General Public License |
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* as published by the Free Software Foundation; either version 2 |
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* of the License, or (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place - Suite 330, |
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* Boston, MA 02111-1307, USA. |
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*--------------------------------------------------------------------*/ |
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#ifndef __sun_h |
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#define __sun_h |
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#if defined (__cplusplus) |
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extern "C" { |
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#endif |
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/* error messages */ |
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#define ERROR_NO_ZENITH -1 |
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/* prototypes */ |
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double eccentricity (int day); /* day of year */ |
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double declination (int day); /* day of year */ |
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int equation_of_time (int day); /* day of year */ |
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int LAT (int time, /* standard time */ |
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int day, /* day of year */ |
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double longitude, /* longitude */ |
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double long_std); /* standard longitude */ |
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double hour_angle (int time); /* local apparent time */ |
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double solar_zenith (int time, /* standard time */ |
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int day, /* day of year */ |
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double latitude, /* latitude */ |
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double longitude, /* longitude */ |
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double long_std); /* standard longitude */ |
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double solar_azimuth (int time, /* standard time */ |
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int day, /* day of year */ |
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double latitude, /* latitude */ |
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double longitude, /* longitude */ |
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double long_std); /* standard longitude */ |
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int zenith2time (int day, /* day of year */ |
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double zenith_angle, /* zenith angle [deg] */ |
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double latitude, /* latitude [deg] */ |
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double longitude, /* longitude [deg] */ |
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double long_std, /* standard longitude */ |
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int *time1, /* first time */ |
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int *time2); /* second time */ |
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int day_of_year (int day, /* day of month (1..31) */ |
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int month); /* month (1..12) */ |
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char *time2str (char *timestr, /* buffer for timestr */ |
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int hour, /* hour */ |
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int min, /* minute */ |
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int sec); /* second */ |
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int Gregorian2Julian (int d, int m, int y, int *jd); |
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int Julian2Gregorian (int *d, int *m, int *y, int jd); |
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int location (char *locstr, double *a, double *o, double *s); |
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#if defined (__cplusplus) |
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} |
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#endif |
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#endif |
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