int res;
int j;
double jd0=2442457;
double dt1=0.5E0;
t_calcephbin *peph;
double PV[6];
/* open the ephemeris file */
peph = calceph_open("example1.dat");
if (peph)
{
/* the heliocentric coordinates of Mars in km and km/s */
calceph_compute_unit(peph, jd0, dt1, 4, 11,
CALCEPH_UNIT_KM+CALCEPH_UNIT_SEC,
PV);
for(j=0; j<6; j++) printf("%23.16E\n", PV[j]);
/* compute same quantity as the previous call using NAIF ID */
calceph_compute_unit(peph, jd0, dt1,
NAIFID_MARS_BARYCENTER,
NAIFID_SUN,
CALCEPH_USE_NAIFID+CALCEPH_UNIT_KM
+CALCEPH_UNIT_SEC,
PV);
for(j=0; j<6; j++) printf("%23.16E\n", PV[j]);
/* the heliocentric coordinates of Mars in AU and AU/day */
calceph_compute_unit(peph, jd0, dt1, 4, 11,
CALCEPH_UNIT_AU+CALCEPH_UNIT_DAY,
PV);
for(j=0; j<6; j++) printf("%23.16E\n", PV[j]);
/* close the ephemeris file */
calceph_close(peph);
}