s int j;

double jd0=2451419; double dt1=0.5E0; t_calcephbin *peph; double G[6];

/* open the ephemeris file */ peph = calceph_open("example2_rotangmom.dat"); if (peph) {

calceph_prefetch(peph);

calceph_rotangmom_unit(peph, jd0, dt1, NAIFID_EARTH,

CALCEPH_USE_NAIFID+CALCEPH_UNIT_SEC, G);

for(j=0; j<6; j++) printf("%23.16En", G[j]);

/* close the ephemeris file */ calceph_close(peph);

}

from calcephpy import *

jd0=2451419
dt=0.5E0

peph = CalcephBin.open("example2_rotangmom.dat")

G = peph.rotangmom_unit(jd0, dt, NaifId.EARTH,
                      Constants.USE_NAIFID+Constants.UNIT_SEC)
print(G)

peph.close()