CL_dat_utc2tai — UTC to TAI conversion
[cjdtai]=CL_dat_utc2tai(cjdutc)
UTC / TAI correspondance is read in the global constant %CL_TAI_UTC (vector). You can modify the UTC / TAI correspondance by modifying the global constant %CL_TAI_UTC
Note : TAI time is not defined until 1972 (cjd=8035 or later); if cjd is before 8035 output is equal to input parameters