/* * iau2000a_nutation.h - Declarations for the IAU 2000A nutation model * Copyright (C) 2010 Shiva Iyer <shiva.iyer AT g m a i l DOT c o m> * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ #ifndef _GE2000A_NUTATION_H_ #define _GE2000A_NUTATION_H_ #include "julian_date.h" /* Used internally to store the series of terms in the theory */ 00025 struct ge2000a_term1 { short l; short lp; short f; short d; short om; double ps; double psd; double pcp; double ec; double ecd; double esp; }; /* Used internally to store the series of terms in the theory */ 00040 struct ge2000a_term2 { short mer; short ven; short ear; short mar; short jup; short sat; short ura; short nep; short gp; short l; short lp; short f; short d; short om; double ps; double pcp; double ec; double esp; }; double ge2000a_mean_obliquity(struct julian_date *tdb); void ge2000a_nutation(struct julian_date *tdb,double *d_psi, double *d_epsilon); void ge2000a_nutation_matrix(struct julian_date *tdb, double nut_matrix[3][3]); #endif

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