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jpleph.h
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jpleph.h
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/* jpleph.h: header for JPL ephemeris functions
Copyright (C) 2011, Project Pluto
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 2
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
/***************************************************************************
******* JPLEPH.H *********
****************************************************************************
** This header file is used both by ASC2EPH and TESTEPH programs. **
****************************************************************************
** Written: May 28, 1997 by PAD ** Last modified: June 23,1997 by PAD **
** Modified further by Bill Gray, Jun-Aug 2001 **
****************************************************************************
** PAD: dr. Piotr A. Dybczynski, e-mail: [email protected] **
** Astronomical Observatory of the A.Mickiewicz Univ., Poznan, Poland **
***************************************************************************/
/* By default, in Windoze 32, the JPL ephemeris functions are compiled
into a DLL. This is not really all that helpful at present, but may
be useful to people who want to use the functions from languages other
than C. */
#ifdef _WIN32
#define DLL_FUNC __stdcall
#else
#define DLL_FUNC
#endif
#ifdef __WATCOMC__
#include <stdbool.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
void * DLL_FUNC jpl_init_ephemeris( const char *ephemeris_filename,
char nam[][6], double *val);
void DLL_FUNC jpl_close_ephemeris( void *ephem);
int DLL_FUNC jpl_state( void *ephem, const double et, const int list[14],
double pv[][6], double nut[4], const int bary);
int DLL_FUNC jpl_pleph( void *ephem, const double et, const int ntarg,
const int ncent, double rrd[], const int calc_velocity);
double DLL_FUNC jpl_get_double( const void *ephem, const int value);
long DLL_FUNC jpl_get_long( const void *ephem, const int value);
int DLL_FUNC make_sub_ephem( void *ephem, const char *sub_filename,
const double start_jd, const double end_jd);
double DLL_FUNC jpl_get_constant( const int idx, void *ephem, char *constant_name);
#ifdef __cplusplus
}
#endif
/* Following are constants used in */
/* jpl_get_double( ) and jpl_get_long( ): */
#define JPL_EPHEM_START_JD 0
#define JPL_EPHEM_END_JD 8
#define JPL_EPHEM_STEP 16
#define JPL_EPHEM_N_CONSTANTS 24
#define JPL_EPHEM_AU_IN_KM 28
#define JPL_EPHEM_EARTH_MOON_RATIO 36
#define JPL_EPHEM_IPT_ARRAY 44
#define JPL_EPHEM_EPHEMERIS_VERSION 224
#define JPL_EPHEM_KERNEL_SIZE 228
#define JPL_EPHEM_KERNEL_RECORD_SIZE 232
#define JPL_EPHEM_KERNEL_NCOEFF 236
#define JPL_EPHEM_KERNEL_SWAP_BYTES 240
/* The following error codes may be returned by */
/* jpl_state() and jpl_pleph(): */
#define JPL_EPH_OUTSIDE_RANGE (-1)
#define JPL_EPH_READ_ERROR (-2)
#define JPL_EPH_QUANTITY_NOT_IN_EPHEMERIS (-3)
#define JPL_EPH_INVALID_INDEX (-5)
#define JPL_EPH_FSEEK_ERROR (-6)
int DLL_FUNC jpl_init_error_code( void);
/* The following error codes may be returned by */
/* jpl_init_error_code( ) after jpl_init_ephemeris( ) */
/* has been called: */
#define JPL_INIT_NO_ERROR 0
#define JPL_INIT_FILE_NOT_FOUND -1
#define JPL_INIT_FSEEK_FAILED -2
#define JPL_INIT_FREAD_FAILED -3
#define JPL_INIT_FREAD2_FAILED -4
#define JPL_INIT_FREAD5_FAILED -10
#define JPL_INIT_FILE_CORRUPT -5
#define JPL_INIT_MEMORY_FAILURE -6
#define JPL_INIT_FREAD3_FAILED -7
#define JPL_INIT_FREAD4_FAILED -8
#define JPL_INIT_NOT_CALLED -9
#define jpl_get_pvsun( ephem) ((double *)((char *)ephem + 248))