Function gfsubc_c 

pub unsafe extern "C" fn gfsubc_c(
    target: *mut ConstSpiceChar,
    fixref: *mut ConstSpiceChar,
    method: *mut ConstSpiceChar,
    abcorr: *mut ConstSpiceChar,
    obsrvr: *mut ConstSpiceChar,
    crdsys: *mut ConstSpiceChar,
    coord: *mut ConstSpiceChar,
    relate: *mut ConstSpiceChar,
    refval: SpiceDouble,
    adjust: SpiceDouble,
    step: SpiceDouble,
    nintvls: SpiceInt,
    cnfine: *mut SpiceCell,
    result: *mut SpiceCell,
)