188 lines
7.1 KiB
C
188 lines
7.1 KiB
C
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/************************************************************
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$Header: /home/dieter/sweph/RCS/swephlib.h,v 1.74 2008/06/16 10:07:20 dieter Exp $
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Authors: Dieter Koch and Alois Treindl, Astrodienst Zurich
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************************************************************/
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/* Copyright (C) 1997 - 2008 Astrodienst AG, Switzerland. All rights reserved.
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License conditions
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------------------
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This file is part of Swiss Ephemeris.
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Swiss Ephemeris is distributed with NO WARRANTY OF ANY KIND. No author
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or distributor accepts any responsibility for the consequences of using it,
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or for whether it serves any particular purpose or works at all, unless he
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or she says so in writing.
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Swiss Ephemeris is made available by its authors under a dual licensing
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system. The software developer, who uses any part of Swiss Ephemeris
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in his or her software, must choose between one of the two license models,
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which are
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a) GNU public license version 2 or later
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b) Swiss Ephemeris Professional License
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The choice must be made before the software developer distributes software
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containing parts of Swiss Ephemeris to others, and before any public
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service using the developed software is activated.
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If the developer choses the GNU GPL software license, he or she must fulfill
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the conditions of that license, which includes the obligation to place his
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or her whole software project under the GNU GPL or a compatible license.
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See http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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If the developer choses the Swiss Ephemeris Professional license,
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he must follow the instructions as found in http://www.astro.com/swisseph/
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and purchase the Swiss Ephemeris Professional Edition from Astrodienst
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and sign the corresponding license contract.
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The License grants you the right to use, copy, modify and redistribute
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Swiss Ephemeris, but only under certain conditions described in the License.
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Among other things, the License requires that the copyright notices and
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this notice be preserved on all copies.
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Authors of the Swiss Ephemeris: Dieter Koch and Alois Treindl
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The authors of Swiss Ephemeris have no control or influence over any of
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the derived works, i.e. over software or services created by other
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programmers which use Swiss Ephemeris functions.
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The names of the authors or of the copyright holder (Astrodienst) must not
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be used for promoting any software, product or service which uses or contains
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the Swiss Ephemeris. This copyright notice is the ONLY place where the
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names of the authors can legally appear, except in cases where they have
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given special permission in writing.
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The trademarks 'Swiss Ephemeris' and 'Swiss Ephemeris inside' may be used
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for promoting such software, products or services.
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*/
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/* Set TRUE, to include Herring's (1987) corrections to IAU 1980
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* nutation series. AA (1996) neglects them. */
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#define NUT_CORR_1987 FALSE
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/* Precession coefficients for remote past and future.
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* One of the following four defines must be true.
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*/
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#define PREC_VONDRAK_2011 TRUE
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#define PREC_WILLIAMS_1994 FALSE
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#define PREC_SIMON_1994 FALSE
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#define PREC_LASKAR_1986 FALSE
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#define PREC_BRETAGNON_2003 FALSE
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/* IAU precession 1976 or 2003 for recent centuries.
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* only one of the following two defines may be TRUE */
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#define PREC_IAU_1976 FALSE
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#define PREC_IAU_2003 FALSE /* precession model P03 */
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#define PREC_IAU_1976_CTIES 2.0 /* J2000 +/- two centuries */
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/* we use P03 for whole ephemeris */
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#define PREC_IAU_2003_CTIES 75.0 /* J2000 +/- 75 centuries */
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/* choose between the following nutation models */
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#define NUT_IAU_1980 FALSE
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#define NUT_IAU_2000A FALSE /* very time consuming ! */
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#define NUT_IAU_2000B TRUE /* fast, but precision of milli-arcsec */
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/* coordinate transformation */
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extern void swi_coortrf(double *xpo, double *xpn, double eps);
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/* coordinate transformation */
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extern void swi_coortrf2(double *xpo, double *xpn, double sineps,
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double coseps);
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/* cartesian to polar coordinates */
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extern void swi_cartpol(double *x, double *l);
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/* cartesian to polar coordinates with velocity */
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extern void swi_cartpol_sp(double *x, double *l);
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extern void swi_polcart_sp(double *l, double *x);
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/* polar to cartesian coordinates */
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extern void swi_polcart(double *l, double *x);
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/* GCRS to J2000 */
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extern void swi_bias(double *x, int32 iflag, AS_BOOL backward);
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/* GCRS to FK5 */
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extern void swi_icrs2fk5(double *x, int32 iflag, AS_BOOL backward);
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/* precession */
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extern int swi_precess(double *R, double J, int direction);
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extern void swi_precess_speed(double *xx, double t, int direction);
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/* from sweph.c, light deflection, aberration, etc. */
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extern void swi_deflect_light(double *xx, double dt, int32 iflag);
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extern void swi_aberr_light(double *xx, double *xe, int32 iflag);
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extern int swi_plan_for_osc_elem(int32 iflag, double tjd, double *xx);
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extern int swi_trop_ra2sid_lon(double *xin, double *xout, double *xoutr,
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int32 iflag, char *serr);
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extern int swi_trop_ra2sid_lon_sosy(double *xin, double *xout, double *xoutr,
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int32 iflag, char *serr);
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extern int swi_get_observer(double tjd, int32 iflag, AS_BOOL do_save,
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double *xobs, char *serr);
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extern void swi_force_app_pos_etc();
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/* obliquity of ecliptic */
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extern void swi_check_ecliptic(double tjd);
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extern double swi_epsiln(double J);
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extern void swi_ldp_peps(double J, double *dpre, double *deps);
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/* nutation */
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extern void swi_check_nutation(double tjd, int32 iflag);
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extern int swi_nutation(double J, double *nutlo);
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extern void swi_nutate(double *xx, int32 iflag, AS_BOOL backward);
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extern void swi_mean_lunar_elements(double tjd, double *node, double *dnode,
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double *peri, double *dperi);
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/* */
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extern double swi_mod2PI(double x);
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/* evaluation of chebyshew series and derivative */
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extern double swi_echeb(double x, double *coef, int ncf);
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extern double swi_edcheb(double x, double *coef, int ncf);
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/* cross product of vectors */
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extern void swi_cross_prod(double *a, double *b, double *x);
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/* dot product of vecotrs */
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extern double swi_dot_prod_unit(double *x, double *y);
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extern double swi_angnorm(double x);
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/* generation of SWISSEPH file names */
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extern void swi_gen_filename(double tjd, int ipli, char *fname);
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/* cyclic redundancy checksum (CRC), 32 bit */
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extern uint32 swi_crc32(unsigned char *buf, int len);
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extern int swi_cutstr(char *s, char *cutlist, char *cpos[], int nmax);
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extern char *swi_right_trim(char *s);
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extern double swi_kepler(double E, double M, double ecce);
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extern char *swi_get_fict_name(int32 ipl, char *s);
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extern void swi_FK4_FK5(double *xp, double tjd);
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extern char *swi_strcpy(char *to, char *from);
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extern char *swi_strncpy(char *to, char *from, size_t n);
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#ifdef TRACE
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#define TRACE_COUNT_MAX 10000
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extern FILE *swi_fp_trace_c;
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extern FILE *swi_fp_trace_out;
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extern void swi_open_trace(char *serr);
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extern int32 swi_trace_count;
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static char *fname_trace_c = "swetrace.c";
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static char *fname_trace_out = "swetrace.txt";
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#ifdef FORCE_IFLAG
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static char *fname_force_flg = "force.flg";
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#endif
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#endif /* TRACE */
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