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sweasp.c
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/* SWISSEPH
Authors: Dieter Koch and Alois Treindl, Astrodienst Zurich
swetest -ec3 -p789 -lasp -b1.1.-580 -s30 -n200000 -lsco -ln2
**************************************************************/
/* Copyright (C) 1997 - 2021 Astrodienst AG, Switzerland. All rights reserved.
License conditions
------------------
This file is part of Swiss Ephemeris.
Swiss Ephemeris is distributed with NO WARRANTY OF ANY KIND. No author
or distributor accepts any responsibility for the consequences of using it,
or for whether it serves any particular purpose or works at all, unless he
or she says so in writing.
Swiss Ephemeris is made available by its authors under a dual licensing
system. The software developer, who uses any part of Swiss Ephemeris
in his or her software, must choose between one of the two license models,
which are
a) GNU Affero General Public License (AGPL)
b) Swiss Ephemeris Professional License
The choice must be made before the software developer distributes software
containing parts of Swiss Ephemeris to others, and before any public
service using the developed software is activated.
If the developer choses the AGPL software license, he or she must fulfill
the conditions of that license, which includes the obligation to place his
or her whole software project under the AGPL or a compatible license.
See https://www.gnu.org/licenses/agpl-3.0.html
If the developer choses the Swiss Ephemeris Professional license,
he must follow the instructions as found in http://www.astro.com/swisseph/
and purchase the Swiss Ephemeris Professional Edition from Astrodienst
and sign the corresponding license contract.
The License grants you the right to use, copy, modify and redistribute
Swiss Ephemeris, but only under certain conditions described in the License.
Among other things, the License requires that the copyright notices and
this notice be preserved on all copies.
Authors of the Swiss Ephemeris: Dieter Koch and Alois Treindl
The authors of Swiss Ephemeris have no control or influence over any of
the derived works, i.e. over software or services created by other
programmers which use Swiss Ephemeris functions.
The names of the authors or of the copyright holder (Astrodienst) must not
be used for promoting any software, product or service which uses or contains
the Swiss Ephemeris. This copyright notice is the ONLY place where the
names of the authors can legally appear, except in cases where they have
given special permission in writing.
The trademarks 'Swiss Ephemeris' and 'Swiss Ephemeris inside' may be used
for promoting such software, products or services.
*/
/* attention: Microsoft Compiler does not accept strings > 2048 char */
static char *infocmd0 = "\n\
Swetest computes a complete set of geocentric planetary positions,\n\
for a given date or a sequence of dates.\n\
Input can either be a date or an absolute julian day number.\n\
0:00 (midnight).\n\
With the proper options, swetest can be used to output a printed\n\
ephemeris and transfer the data into other programs like spreadsheets\n\
for graphical display.\n\
\n";
static char *infocmd1 = "\n\
Command line options:\n\
-pSEQ planet sequence to be computed.\n\
See the letter coding below.\n\
-nN output data for N consecutive days; if no -n option\n\
is given, the default is 1. If the option -n without a\n\
number is given, the default is 20.\n\
-sN timestep N days, default 1. This option is only meaningful\n\
when combined with option -n.\n\
-edirPATH change the directory of the ephemeris files \n\
-dX differential ephemeris: print differential ephemeris between\n\
body X and each body in list given by -p\n\
example: -p2 -d0 -fJl -n366 -b1.1.1992 prints the longitude\n\
distance between SUN (planet 0) and MERCURY (planet 2)\n\
for a full year starting at 1 Jan 1992.\n\
-hel compute heliocentric positions\n\
-bary compute barycentric positions (bar. sun instead of node) \n\
-head don\'t print the header before the planet data. This option\n\
is useful when you want to paste the output into a\n\
spreadsheet for displaying graphical ephemeris.\n\
+head header before every step (with -s..) \n\
-bDATE use this begin date instead of asking; use -b1.1.1992 if\n\
the begin date string contains blanks; use format -bj2400000.5\n\
to express the date as absolute Julian day number.\n\
Note: the date format is day month year (European style).\n\
-gPPP use PPP as gap between output columns; default is a single\n\
blank. -g followed by white space sets the\n\
gap to the TAB character; which is useful for data entry\n\
into spreadsheets.\n\
-iXX force iflag to value XX\n\
-fSEQ use SEQ as format sequence for the output columns;\n\
default is PLBRuS.\n";
static char *infocmd2 = "\
-ut input date is universal time\n\
-eswe swiss ephemeris\n\
-ejpl jpl ephemeris (DE406), or with ephemeris file name\n\
-ejplDE200.cdrom \n\
-emos moshier ephemeris\n\
-true true positions\n\
-noaberr no aberration\n\
-nodefl no gravitational light deflection\n\
-j2000 no precession (i.e. J2000 positions)\n\
-nonut no nutation \n\
-speed high precision speed \n\
-speed3 'low' precision speed from 3 positions \n\
do not use this option. -speed parameter is faster and preciser \n\
-testaa96 test example in AA 96, B37,\n\
i.e. venus, j2450442.5, DE200.\n\
attention: use precession IAU1976\n\
and nutation 1980 (s. swephlib.h)\n\
-testaa95\n\
-roundsec round to seconds\n\
-roundmin round to minutes\n\
\n\
-?, -h display whole info\n\
-hcmd display commands\n\
-hplan display planet numbers\n\
-hform display format characters\n\
-hdate display input date format\n";
static char *infoplan = "\n\
Planet selection letters:\n\
d (default) main factors 0123456789mtABC\n\
p main factors as above, plus main asteroids DEFGHI\n\
h ficticious factors J..X\n\
a all factors\n\
(the letters above can only appear as a single letter)\n\n\
0 Sun (character zero)\n\
1 Moon (character 1)\n\
2 Mercury\n\
....\n\
9 Pluto\n\
m mean lunar node\n\
t true lunar node\n\
e obliquity of ecliptic\n\
n nutation\n\
A lunar apogee mean (Lilith, Black Moon) \n\
B lunar apogee osculating \n\
w lunar apogee interpolated\n\
x lunar perigee interpolated\n\
C Earth \n\
D Chiron\n\
E Pholus\n\
F Ceres \n\
G Pallas \n\
H Juno \n\
I Vesta \n\
J Cupido \n\
K Hades \n\
L Zeus \n\
M Kronos \n\
N Apollon \n\
O Admetos \n\
P Vulkanus \n\
Q Poseidon \n\
R Isis (Sevin) \n\
S Nibiru (Sitchin) \n\
T Harrington \n\
U Leverrier's Neptune\n\
V Adams' Neptune\n\
W Lowell's Pluto\n\
X Pickering's Pluto\n\n\
f fixed star, with name or number given in -xf option\n\
s minor planet, with MPC number given in -xs\n\
\n";
static char *infoform = "\n\
Output format SEQ letters:\n\
In the standard setting five columns of coordinates are printed with\n\
the default format PLBRuS. You can change the default by providing an\n\
option like -fCCCC where CCCC is your sequence of columns.\n\
The coding of the sequence is like this:\n\
y year\n\
Y year.fraction_of_year\n\
p planet index\n\
P planet name\n\
J absolute juldate\n\
T date formatted like 23.02.1992 \n\
t date formatted like 920223 for 1992 february 23\n\
L longitude in degree ddd mm'ss\"\n\
l longitude decimal\n\
Z longitude ddsignmm'ss\"\n\
S speed in longitude in degree ddd:mm:ss per day\n\
SS speed for all values specified in fmt\n\
s speed longitude decimal (degrees/day)\n\
ss speed for all values specified in fmt\n\
B latitude degree\n\
b latitude decimal\n\
R distance decimal in AU\n\
r distance decimal in AU, Moon in seconds parallax\n\
relative distance (1000=nearest, 0=furthest)\n\
A Rectascension in hh:mm:ss\n\
a rectascension hours decimal\n\
D Declination degree\n\
d declination decimal\n\
X x-, y-, and z-coordinates ecliptical\n\
x x-, y-, and z-coordinates equatorial\n\
U unit vector ecliptical\n\
u unit vector equatorial\n\
Q l, b, r, dl, db, dr, a, d, da, dd\n";
static char *infodate = "\n\
Date entry:\n\
In the interactive mode, when you are asked for a start date,\n\
you can enter data in one of the following formats:\n\
\n\
1.2.1991 three integers separated by a nondigit character for\n\
day month year. Dates are interpreted as Gregorian\n\
after 4.10.1582 and as Julian Calender before.\n\
Time is always set to midnight.\n\
If the three letters jul are appended to the date,\n\
the Julian calendar is used even after 1582.\n\
If the four letters greg are appended to the date,\n\
the Gregorian calendar is used even before 1582.\n\
\n\
j2400123.67 the letter j followed by a real number, for\n\
the absolute Julian daynumber of the start date.\n\
Fraction .5 indicates midnight, fraction .0\n\
indicates noon, other times of the day can be\n\
chosen accordingly.\n\
\n\
<RETURN> repeat the last entry\n\
\n\
. stop the program\n\
\n\
+20 advance the date by 20 days\n\
\n\
-10 go back in time 10 days\n";
/**************************************************************/
//#include "sweodef.h"
#include "swephexp.h"
#include "swephlib.h"
#include <string.h>
#if MSDOS
# include <direct.h>
# include <dos.h>
# ifdef _MSC_VER
# include <sys\types.h>
# endif
# include <sys\stat.h>
#else
# include <sys/stat.h>
#endif
#ifdef _WINDOWS
#include <windows.h>
#endif
//#include "sweph.h"
//#include "swephlib.h"
#define J2000 2451545.0 /* 2000 January 1.5 */
#define square_sum(x) (x[0]*x[0]+x[1]*x[1]+x[2]*x[2])
#define SEFLG_EPHMASK (SEFLG_JPLEPH|SEFLG_SWIEPH|SEFLG_MOSEPH)
#define BIT_ROUND_SEC 1
#define BIT_ROUND_MIN 2
#define BIT_ZODIAC 4
#define PLSEL_D "0123456789mtABC"
#define PLSEL_P "0123456789mtABCDEFGHI"
#define PLSEL_H "JKLMNOPQRSTUV"
#define PLSEL_A "0123456789mtABCDEFGHIJKLMNOPQRSTUV"
#define LIST_CONJ 1
#define LIST_POLYG 2
#define LIST_ASP 4
static int listflag = (LIST_CONJ|LIST_ASP);
static int nlist = 0;
static double maxorb = 4;
static char slist[AS_MAXCH];
static char sretdir[AS_MAXCH];
int iflag = 0;
AS_BOOL do_nod = FALSE, do_nos = FALSE, do_aph = FALSE, do_per = FALSE;
int do_true_node = 0;
#ifdef _WINDOWS
static FILE *fp = NULL;
#endif
static char se_pname[AS_MAXCH];
static char *zod_nam[] = {"ar", "ta", "ge", "cn", "le", "vi",
"li", "sc", "sa", "cp", "aq", "pi"};
extern int swe_plan_pheno(double tjd, int ipl, int iflag, double *attr, char *serr);
static char star[AS_MAXCH] = "algol";
static char sastno[AS_MAXCH] = "433";
static char *dms(double x, long iflag);
static int do_calc(double tjd, int ipl, long iflag, double *x, char *serr);
static long do_fixstar(char *star, double tjd, long iflag, double *x, char *serr);
static void do_printf(char *info);
static double difdeg2n (double p1, double p2);
static int find_ephemeris_path(long iflag, char *argv0);
static int letter_to_ipl(int letter);
static int search_file(char *path, long iflag);
void polcart(double *l, double *x);
static int pos_compare(double *a1, double *a2);
static int find_maximum(double y00, double y11, double y2, double dx,
double *dxret, double *yret);
static int find_zero(double y00, double y11, double y2, double dx,
double *dxret, double *dxret2);
static double find_max(double tjd, double tstep, char *plsel,
double harm, int recursive,
double *xxs);
static char *hms(double x, long iflag);
#define NPLX 30
#ifdef _WINDOWS
int WinMain(HANDLE hInstance, HANDLE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
#else
int main(int argc, char *argv[])
#endif
{
#ifdef _WINDOWS
int argc = 1;
char *argv[30];
struct _wopeninfo wo;
char scmd[AS_MAXCH];
#endif
char spnam[AS_MAXCH], spnam2[AS_MAXCH], saves[AS_MAXCH];
char serr[AS_MAXCH], serr_save[AS_MAXCH], serr_warn[AS_MAXCH], sout[AS_MAXCH];
char *sp, *spsave, *sp2, *psp;
char *spno;
char *fmt = "PLBRS";
char *gap = " ";
char *plsel = PLSEL_D;
#if HPUNIX
char hostname[80];
#endif
int i, j, n, iflag_f = -1, isp;
int listflg2 = 0;
int jmon, jday, jyear;
int line_count, line_limit = 32000;
double jut = 0.0, y_frac;
int ipl, ipldiff = SE_SUN;
long nstep = 1, istep;
double x[6], x2[6], xequ[6], xcart[6], xcartq[6];
static double xxx[NPLX], xsv[NPLX], xs2[NPLX];
/* static to init with 0 */
double ar, sinp;
char ephepath[AS_MAXCH];
char fname[AS_MAXCH];
char sdate[AS_MAXCH];
char *begindate = NULL;
long iflag2; /* external flag: helio, geo... */
long iflgret;
int icomb, ncomb, plslen;
int whicheph = SEFLG_SWIEPH;
short universal_time = FALSE;
short with_header = TRUE;
short with_header_always = FALSE;
int gregflag;
AS_BOOL plan_phenomena = FALSE;
AS_BOOL do_eval_const = FALSE;
AS_BOOL do_print_max = FALSE;
AS_BOOL do_all_comb = FALSE;
short diff_mode = FALSE;
long round_flag = 0;
double tjd = 2415020.5, t_ut;
double t, te, t2, tstep = 1, thour = 0;
double delt;
serr[0] = serr_save[0] = serr_warn[0] = saves[0] = slist[0] = '\0';
#ifdef _WINDOWS
wo._version = _QWINVER;
wo._title = "Dlltest";
wo._wbufsize = _WINBUFDEF;
fp = _fwopen(&wo, NULL, "w+");
do_printf("Enter options: ");
rewind(fp);
fgets(scmd, AS_MAXCH, fp);
rewind(fp);
argv[0] = "swetest";
sp = strchr(scmd, '\n');
if (sp != NULL)
*sp = '\0';
sp = scmd;
/* cut command string */
while (sp != NULL && *sp != '\0') {
while (*sp == ' ')
sp++;
if (*sp == '\0')
break;
if (*sp == '-' || *sp == '+') {
argv[argc] = sp;
argc++;
} else if (*sp == 'j' || (*sp >= '0' && *sp <= '9')) {
strcpy(s, "-b"); /* date is allowed without '-b' */
strcat(s, sp);
strcpy(sp, s);
argv[argc] = sp;
argc++;
} else
goto end_main;
sp = strchr(sp, ' ');
if (sp != NULL) {
*sp = '\0';
sp++;
}
}
iflag = whicheph | SEFLG_SPEED;
#endif
strcpy(ephepath, SE_EPHE_PATH);
strcpy(fname, SE_FNAME_DE406);
for (i = 1; i < argc; i++) {
if (strncmp(argv[i], "-ut", 3) == 0) {
universal_time = TRUE;
if (strlen(argv[i]) > 3) {
thour = atof(argv[i] + 3) + 1E-10;
/* h.mmss -> decimal */
t = (thour - (int) thour) * 100;
j = (int) t;
t = (t - (int) t) * 100;
thour = (int) thour + j / 60.0 + t / 3600.0;
}
} else if (strncmp(argv[i], "-head", 5) == 0) {
with_header = FALSE;
} else if (strncmp(argv[i], "+head", 5) == 0) {
with_header_always = TRUE;
} else if (strcmp(argv[i], "-j2000") == 0) {
iflag |= SEFLG_J2000;
} else if (strncmp(argv[i], "-sidto", 6) == 0) {
iflag |= SEFLG_SIDEREAL;
swe_set_sid_mode(atol(argv[i] + 6) + SE_SIDBIT_ECL_T0, 0, 0);
} else if (strncmp(argv[i], "-sidsy", 6) == 0) {
iflag |= SEFLG_SIDEREAL;
swe_set_sid_mode(atol(argv[i] + 6) + SE_SIDBIT_SSY_PLANE, 0, 0);
} else if (strncmp(argv[i], "-sid", 4) == 0) {
iflag |= SEFLG_SIDEREAL;
swe_set_sid_mode(atol(argv[i] + 4), 0, 0);
} else if (strcmp(argv[i], "-lcon") == 0) {
listflg2 |= LIST_CONJ;
} else if (strcmp(argv[i], "-lpol") == 0) {
listflg2 |= LIST_POLYG;
} else if (strcmp(argv[i], "-lasp") == 0) {
listflg2 |= LIST_ASP;
} else if (strncmp(argv[i], "-ln", 3) == 0) {
nlist = atoi(argv[i]+3);
} else if (strncmp(argv[i], "-ls", 3) == 0) {
strcpy(slist, argv[i]+3);
} else if (strncmp(argv[i], "-orb", 4) == 0) {
maxorb = atof(argv[i]+4);
} else if (strncmp(argv[i], "-ec", 3) == 0) {
do_eval_const = TRUE;
if (*(argv[i] + 3) != '\0')
do_print_max = TRUE;
if (*(argv[i] + 3) == '3')
do_all_comb = TRUE;
} else if (strncmp(argv[i], "-j", 2) == 0) {
begindate = argv[i] + 1;
} else if (strncmp(argv[i], "-ejpl", 5) == 0) {
whicheph = SEFLG_JPLEPH;
strcpy(ephepath, SE_EPHE_PATH);
if (*(argv[i]+5) != '\0')
strcpy(fname, argv[i]+5);
} else if (strcmp(argv[i], "-eswe") == 0) {
whicheph = SEFLG_SWIEPH;
strcpy(ephepath, SE_EPHE_PATH);
} else if (strcmp(argv[i], "-emos") == 0) {
whicheph = SEFLG_MOSEPH;
} else if (strcmp(argv[i], "-hel") == 0) {
iflag |= SEFLG_HELCTR;
} else if (strcmp(argv[i], "-bary") == 0) {
iflag |= SEFLG_BARYCTR;
} else if (strcmp(argv[i], "-topo") == 0) {
iflag |= SEFLG_TOPOCTR;
} else if (strcmp(argv[i], "-true") == 0) {
iflag |= SEFLG_TRUEPOS;
} else if (strcmp(argv[i], "-noaberr") == 0) {
iflag |= SEFLG_NOABERR;
} else if (strcmp(argv[i], "-nodefl") == 0) {
iflag |= SEFLG_NOGDEFL;
} else if (strcmp(argv[i], "-nonut") == 0) {
iflag |= SEFLG_NONUT;
} else if (strcmp(argv[i], "-speed3") == 0) {
iflag |= SEFLG_SPEED3;
} else if (strcmp(argv[i], "-speed") == 0) {
iflag |= SEFLG_SPEED;
} else if (strncmp(argv[i], "-phen", 5) == 0) {
plan_phenomena = TRUE;
} else if (strncmp(argv[i], "-testaa", 7) == 0) {
whicheph = SEFLG_JPLEPH;
strcpy(ephepath, SE_EPHE_PATH);
strcpy(fname, SE_FNAME_DE200);
if (strcmp(argv[i]+7, "95") == 0)
begindate = "j2449975.5";
if (strcmp(argv[i]+7, "96") == 0)
begindate = "j2450442.5";
if (strcmp(argv[i]+7, "97") == 0)
begindate = "j2450482.5";
fmt = "PADRu";
universal_time = FALSE;
plsel="3";
} else if (strncmp(argv[i], "-nod", 4) == 0) {
if (strchr(argv[i], 's') != NULL)
do_nos = TRUE;
else
do_nod = TRUE;
if (strchr(argv[i], 'm') != NULL)
do_true_node = SE_NODBIT_MEAN;
if (strchr(argv[i], 't') != NULL)
do_true_node = SE_NODBIT_OSCU;
if (strchr(argv[i], 'b') != NULL)
do_true_node |= SE_NODBIT_OSCU_BAR;
if (strchr(argv[i], 'f') != NULL)
do_true_node |= SE_NODBIT_FOPOINT;
} else if (strncmp(argv[i], "-aph", 4) == 0) {
do_aph = TRUE;
if (strchr(argv[i], 'm') != NULL)
do_true_node = SE_NODBIT_MEAN;
if (strchr(argv[i], 't') != NULL)
do_true_node = SE_NODBIT_OSCU;
if (strchr(argv[i], 'b') != NULL)
do_true_node |= SE_NODBIT_OSCU_BAR;
if (strchr(argv[i], 'f') != NULL)
do_true_node |= SE_NODBIT_FOPOINT;
} else if (strncmp(argv[i], "-per", 4) == 0) {
do_per = TRUE;
if (strchr(argv[i], 'm') != NULL)
do_true_node = SE_NODBIT_MEAN;
if (strchr(argv[i], 't') != NULL)
do_true_node = SE_NODBIT_OSCU;
if (strchr(argv[i], 'b') != NULL)
do_true_node |= SE_NODBIT_OSCU_BAR;
if (strchr(argv[i], 'f') != NULL)
do_true_node |= SE_NODBIT_FOPOINT;
} else if (strncmp(argv[i], "-p", 2) == 0) {
spno = argv[i]+2;
switch (*spno) {
case 'd':
case '\0':
case ' ': plsel = PLSEL_D; break;
case 'p': plsel = PLSEL_P; break;
case 'h': plsel = PLSEL_H; break;
case 'a': plsel = PLSEL_A; break;
default: plsel = spno;
}
} else if (strncmp(argv[i], "-xs", 3) == 0) {
/* number of asteroid */
strcpy(sastno, argv[i] + 3);
} else if (strncmp(argv[i], "-xf", 3) == 0) {
/* name or number of fixed star */
strcpy(star, argv[i] + 3);
} else if (strncmp(argv[i], "-x", 2) == 0) {
/* name or number of fixed star */
strcpy(star, argv[i] + 2);
} else if (strncmp(argv[i], "-n", 2) == 0) {
nstep = atoi(argv[i]+2);
} else if (strncmp(argv[i], "-i", 2) == 0) {
iflag_f = atoi(argv[i]+2);
} else if (strncmp(argv[i], "-s", 2) == 0) {
tstep = atof(argv[i]+2);
} else if (strncmp(argv[i], "-b", 2) == 0) {
begindate = argv[i] + 2;
} else if (strncmp(argv[i], "-f", 2) == 0) {
fmt = argv[i] + 2;
} else if (strncmp(argv[i], "-g", 2) == 0) {
gap = argv[i] + 2;
if (*gap == '\0') gap = "\t";
} else if (strncmp(argv[i], "-d", 2) == 0) {
diff_mode = TRUE;
sp = argv[i]+2;
ipldiff = letter_to_ipl((int) *sp);
if (ipldiff <0) ipldiff = SE_SUN;
swe_get_planet_name(ipldiff, spnam2);
} else if (strcmp(argv[i], "-roundsec") == 0) {
round_flag |= BIT_ROUND_SEC;
} else if (strcmp(argv[i], "-roundmin") == 0) {
round_flag |= BIT_ROUND_MIN;
} else if (strncmp(argv[i], "-h", 2) == 0
|| strncmp(argv[i], "-?", 2) == 0) {
sp = argv[i]+2;
if (*sp == 'c' || *sp == '\0') {
do_printf(infocmd0);
do_printf(infocmd1);
do_printf(infocmd2);
}
if (*sp == 'p' || *sp == '\0')
do_printf(infoplan);
if (*sp == 'f' || *sp == '\0')
do_printf(infoform);
if (*sp == 'd' || *sp == '\0')
do_printf(infodate);
goto end_main;
} else {
sprintf(sout, "illegal option %s\n", argv[i]);
do_printf(sout);
exit(1);
}
}
if (listflg2 > 0)
listflag = listflg2;
plslen = strlen(plsel);
if (do_all_comb)
ncomb = (1 << plslen) - 1;
swe_set_topo(8.55, 47.35, 400);
#if HPUNIX
gethostname (hostname, 80);
if (strstr(hostname, "as10") != NULL)
line_limit = 1000;
#endif
if (with_header) {
for (i = 0; i < argc; i++) {
do_printf(argv[i]);
do_printf(" ");
}
}
iflag = (iflag & ~SEFLG_EPHMASK) | whicheph;
if (strpbrk(fmt, "SsQ") != NULL)
iflag |= SEFLG_SPEED;
#if 1
swe_set_ephe_path(ephepath);
/* swe_set_ephe_path("d:\\sweph\\ephe\\");*/
#else
if (find_ephemeris_path(iflag, argv[0]) == ERR) {
iflag = (iflag & ~SEFLG_EPHMASK) | SEFLG_MOSEPH;
whicheph = SEFLG_MOSEPH;
}
#endif
if (whicheph & SEFLG_JPLEPH)
swe_set_jpl_file(fname);
while (TRUE) {
serr[0] = serr_save[0] = serr_warn[0] = '\0';
if (begindate == NULL) {
do_printf("\nDate ?");
sdate[0] = '\0';
#ifdef _WINDOWS
rewind(fp);
fgets(sdate, AS_MAXCH, fp);
rewind(fp);
#else
gets(sdate);
#endif
} else {
strcpy(sdate, begindate);
begindate = "."; /* to exit afterwards */
}
if (strcmp(sdate, "-bary") == 0) {
iflag = iflag & ~SEFLG_HELCTR;
iflag |= SEFLG_BARYCTR;
*sdate = '\0';
} else if (strcmp(sdate, "-hel") == 0) {
iflag = iflag & ~SEFLG_BARYCTR;
iflag |= SEFLG_HELCTR;
*sdate = '\0';
} else if (strcmp(sdate, "-geo") == 0) {
iflag = iflag & ~SEFLG_BARYCTR;
iflag = iflag & ~SEFLG_HELCTR;
*sdate = '\0';
} else if (strcmp(sdate, "-ejpl") == 0) {
iflag &= ~SEFLG_EPHMASK;
iflag |= SEFLG_JPLEPH;
*sdate = '\0';
} else if (strcmp(sdate, "-eswe") == 0) {
iflag &= ~SEFLG_EPHMASK;
iflag |= SEFLG_SWIEPH;
*sdate = '\0';
} else if (strcmp(sdate, "-emos") == 0) {
iflag &= ~SEFLG_EPHMASK;
iflag |= SEFLG_MOSEPH;
*sdate = '\0';
} else if (strncmp(sdate, "-xs",3) == 0) {
/* number of asteroid */
strcpy(sastno, sdate + 3);
*sdate = '\0';
}
sp = sdate;
spsave = sp;
if (*sp == '.') {
goto end_main;
} else if (*sp == '\0') {
strcpy (sdate, saves);
} else {
strcpy (saves, sdate);
}
if (*sp == 'j') { /* it's a day number */
if ((sp2 = strchr(sp, ',')) != NULL)
*sp2 = '.';
sscanf(sp+1,"%lf", &tjd);
if (tjd < 2299160.5) {
gregflag = SE_JUL_CAL;
} else {
gregflag = SE_GREG_CAL;
}
if (strstr(sp, "jul") != NULL) {
gregflag = SE_JUL_CAL;
} else if (strstr(sp, "greg") != NULL) {
gregflag = SE_GREG_CAL;
}
swe_revjul(tjd, gregflag, &jyear, &jmon, &jday, &jut);
} else if (*sp == '+') {
n = atoi(sp);
if (n == 0) n = 1;
tjd += n;
swe_revjul(tjd, gregflag, &jyear, &jmon, &jday, &jut);
} else if (*sp == '-') {
n = atoi(sp);
if (n == 0) n = -1;
tjd += n;
swe_revjul(tjd, gregflag, &jyear, &jmon, &jday, &jut);
} else {
if (sscanf (sp, "%d%*c%d%*c%d", &jday,&jmon,&jyear) < 1) exit(1);
if ((long) jyear * 10000L + (long) jmon * 100L + (long) jday < 15821015L) {
gregflag = SE_JUL_CAL;
} else {
gregflag = SE_GREG_CAL;
}
if (strstr(sp, "jul") != NULL) {
gregflag = SE_JUL_CAL;
} else if (strstr(sp, "greg") != NULL) {
gregflag = SE_GREG_CAL;
}
jut = 0;
tjd = swe_julday(jyear,jmon,jday,jut,gregflag);
tjd += thour / 24;
}
line_count = 0;
for (t = tjd, istep = 1; istep <= nstep; t += tstep, istep++) {
if (t < 2299160.5) {
gregflag = SE_JUL_CAL;
} else {
gregflag = SE_GREG_CAL;
}
if (strstr(spsave, "jul") != NULL) {
gregflag = SE_JUL_CAL;
} else if (strstr(spsave, "greg") != NULL) {
gregflag = SE_GREG_CAL;
}
swe_revjul(t, gregflag, &jyear, &jmon, &jday, &jut);
if (with_header) {
sprintf(sout, "\ndate (dmy) %d.%d.%d", jday, jmon, jyear);
do_printf(sout);
if (gregflag) {
do_printf(" greg.");
} else {
do_printf(" jul.");
}
t2 = t + 0.5;
t2 = (t2 - (long int) t2) * 24;
sprintf(sout, " % 2d:", (int) t2);
do_printf(sout);
t2 = (t2 - (long int) t2) * 60 + 0.5;
sprintf(sout, "%02d", (int) t2);
do_printf(sout);
if (universal_time) {
do_printf(" UT");
} else {
do_printf(" ET");
}
}
delt = swe_deltat(t);
if (universal_time) {
if (with_header) {
sprintf(sout, "\nUT: %f", t);
do_printf(sout);
}
if (with_header) {
sprintf(sout, " delta t: %f sec", delt * 86400.0);
do_printf(sout);
}
te = t + delt;
t_ut = t;
} else {
te = t;
t_ut = te - delt;
}
{
double x[6];
x[1] = x[2] = x[0] = 1;
swi_precess(x, te, iflag, 1);
}
if (with_header && (iflag & SEFLG_SIDEREAL)) {
double daya = swe_get_ayanamsa(te);
char s[AS_MAXCH];
sprintf(s, " ayan = %s", dms(daya, 0));
do_printf(s);
}
if (with_header)
do_printf("\n");
for (psp = plsel, isp = 0; *psp != '\0'; psp++, isp++) {
ipl = letter_to_ipl((int) *psp);
if (with_header && !with_header_always)
with_header = FALSE;
if (*psp == 'f') {
ipl = SE_FIXSTAR;
} else if (*psp == 's') {
ipl = atoi(sastno) + 10000;
}
if (plan_phenomena) {
double attr[20];
if (with_header && psp == plsel)
do_printf("planet\tphase_ang\tphase\t\telong\t\tdiam\t\tmag\n");
if (swe_pheno(te, ipl, iflag, attr, serr) == ERR) {
do_printf(serr);
exit(0);
}
if (strchr(fmt, 'P') != NULL)
swe_get_planet_name(ipl, se_pname);
se_pname[7] = 0;
sprintf(sout, "%s\t%f\t%f\t%f\t%f\t%f\n", se_pname,
attr[0], attr[1], attr[2], attr[3], attr[4]);
do_printf(sout);
continue;
}
if (iflag & SEFLG_HELCTR) {
if (ipl == SE_SUN
|| ipl == SE_MEAN_NODE || ipl == SE_TRUE_NODE
|| ipl == SE_MEAN_APOG || ipl == SE_OSCU_APOG)
continue;
} else if (iflag & SEFLG_BARYCTR) {
if (ipl == SE_MEAN_NODE || ipl == SE_TRUE_NODE
|| ipl == SE_MEAN_APOG || ipl == SE_OSCU_APOG)
continue;
} else { /* geocentric */
if (do_nod || do_nos || do_per || do_aph) {
if (ipl == SE_MEAN_NODE || ipl == SE_TRUE_NODE
|| ipl == SE_MEAN_APOG || ipl == SE_OSCU_APOG)
continue;
} else if (ipl == SE_EARTH)
continue;
}
/* ecliptic position */
if (iflag_f >=0)
iflag = iflag_f;
if (ipl == SE_FIXSTAR) {
iflgret = do_fixstar(star, te, iflag, x, serr);
strcpy(se_pname, star);
} else {
iflgret = do_calc(te, ipl, iflag, x, serr);
if (iflgret != ERR)
swe_get_planet_name(ipl, se_pname);
}
if (1) {
double xx[6], xnorm[6], m;
static double xsum[6];
switch(ipl) {
/* case SE_SUN: m = 1; break;
case SE_MERCURY: m = 6023600; break;
case SE_VENUS: m = 408523.5; break;
case SE_EARTH: m = 328900.5; break;
case SE_MARS: m = 3098710.0; break;
case SE_JUPITER: m = 1047.35;break;
case SE_SATURN: m = 3498.0; break;
case SE_URANUS: m = 22960.0; break;
case SE_NEPTUNE: m = 19314.0; break;
case SE_PLUTO: m = 130000000.0; break;
case SE_CERES: m = 2127659574.0; break;
case SE_PALLAS: m = 10000000000.0; break;
case SE_VESTA: m = 7692307692.0; break; */
case SE_SUN: m = 2.9591220828559109E-04; break;
case SE_MERCURY: m = 4.9125474514508119E-11; break;
case SE_VENUS: m = 7.2434524861627027E-10; break;
case SE_EARTH: m = 8.9970113467124988E-10; break;
case SE_MARS: m = 9.5495351057792581E-11; break;
case SE_JUPITER: m = 2.8253459095242264E-07; break;
case SE_SATURN: m = 8.4597151856806587E-08; break;
case SE_URANUS: m = 1.2920249167819694E-08; break;
case SE_NEPTUNE: m = 1.5243589007842763E-08; break;
case SE_PLUTO: m = 2.1886997654259697E-12; break;
//case SE_CERES: m = 1.3907873789422780E-13; break;
//case SE_PALLAS: m = 2.9591220828559110E-14; break;
//case SE_VESTA: m = 3.8468587077126837E-14; break;
default: m = 0;
}
if (m > 0) m = 1 / m;
for (i = 0; i < 6; i++) {
xx[i] = x[i];
if (i != 2 && i != 5)
xx[i] *= DEGTORAD;
}
swi_polcart_sp(xx, xx);
swi_cross_prod(xx, xx+3, xnorm);
for (i = 0; i < 3; i++) {
if (ipl == SE_MOON)
break;
if (ipl == SE_SUN)
xsum[i] = 0;
xsum[i] += xnorm[i] / m;
}
if (1 && ipl == SE_EARTH) {
swi_cartpol(xsum, xsum);
/*printf("spol: %f %f\n", xsum[0] * RADTODEG, xsum[1] * RADTODEG);*/
}
}
if (*psp == 'o') {/* ecliptic is wanted, remove nutation */
x[2] = x[3] = 0;
strcpy(se_pname, "Ecl. Obl.");
}
if (*psp == 'n') {/* nutation is wanted, remove ecliptic */
x[0] = x[2];
x[1] = x[3];
x[2] = x[3] = 0;
strcpy(se_pname, "Nutation");
}
if (iflgret < 0) {
if (strcmp(serr, serr_save) != 0
&& (ipl == SE_SUN || ipl == SE_MOON
|| ipl == SE_MEAN_NODE || ipl == SE_TRUE_NODE
|| ipl == SE_CHIRON || ipl == SE_CUPIDO
|| ipl >= SE_AST_OFFSET || ipl == SE_FIXSTAR)) {
sprintf(sout, "error: %s\n", serr);
do_printf(sout);
}
strcpy(serr_save, serr);
} else if (*serr != '\0' && *serr_warn == '\0') {
strcpy(serr_warn, serr);
}
if (diff_mode) {
double x3[6], x4[6];
iflgret = do_calc(te, ipldiff, iflag, x2, serr);
if (iflgret < 0) {
sprintf(sout, "error: %s\n", serr);
do_printf(sout);
}
for (i = 0; i < 6; i++) {
x3[i] = x[i];
x4[i] = x2[i];
x[i] -= x2[i];
}
if ((iflag & SEFLG_RADIANS) == 0)
x[0] = difdeg2n(x[0], 0.0);
x3[0] *= DEGTORAD;
x3[1] *= DEGTORAD;
x4[0] *= DEGTORAD;
x4[1] *= DEGTORAD;
polcart(x3, x3);
polcart(x4, x4);
for (i = 0; i < 6; i++)
x3[i] -= x4[i];
x[2] = sqrt(square_sum(x3));
}
/* equator position */
if (strpbrk(fmt, "aADdQ") != NULL) {
iflag2 = iflag | SEFLG_EQUATORIAL;
if (ipl == SE_FIXSTAR) {
iflgret = do_fixstar(star, te, iflag2, xequ, serr);
} else {
iflgret = do_calc(te, ipl, iflag2, xequ, serr);
}
if (diff_mode) {
iflgret = do_calc(te, ipldiff, iflag2, x2, serr);
for (i = 0; i < 6; i++)
xequ[i] -= x2[i];
if ((iflag & SEFLG_RADIANS) == 0)
xequ[0] = difdeg2n(xequ[0], 0.0);
}
}
/* ecliptic cartesian position */
if (strpbrk(fmt, "XU") != NULL) {
iflag2 = iflag | SEFLG_XYZ;
if (ipl == SE_FIXSTAR) {
iflgret = do_fixstar(star, te, iflag2, xcart, serr);
} else {
iflgret = do_calc(te, ipl, iflag2, xcart, serr);
}
if (diff_mode) {
iflgret = do_calc(te, ipldiff, iflag2, x2, serr);
for (i = 0; i < 6; i++)
xcart[i] -= x2[i];
}
}
/* equator cartesian position */
if (strpbrk(fmt, "xu") != NULL) {
iflag2 = iflag | SEFLG_XYZ | SEFLG_EQUATORIAL;
if (ipl == SE_FIXSTAR) {
iflgret = do_fixstar(star, te, iflag2, xcartq, serr);
} else {
iflgret = do_calc(te, ipl, iflag2, xcartq, serr);
}
if (diff_mode) {
iflgret = do_calc(te, ipldiff, iflag2, x2, serr);
for (i = 0; i < 6; i++)
xcartq[i] -= x2[i];
}
}
if (do_eval_const) {
xs2[isp] = xsv[isp];
xsv[isp] = xxx[isp];
xxx[isp] = x[0];
continue;
}
strcpy(spnam, se_pname);
/*
* The string fmt contains a sequence of format specifiers;
* each character in fmt creates a column, the columns are
* sparated by the gap string.
*/
for (sp = fmt; *sp != '\0'; sp++) {
if (sp != fmt)
do_printf(gap);