2 is -32.
         ./

         #define           IO    501
         #define           VG2   -32


         /.
         Local variables
         ./
         SpiceDouble       state [ 6 ];
         SpiceDouble       pos1  [ 3 ];
         SpiceDouble       pos2  [ 3 ];
         SpiceDouble       diff;
         SpiceDouble       lt;
         SpiceDouble       et;

         SpiceChar       * utc = &quot;1979 JUN 25 12:00:00&quot;;

         /.
         Load the sample SPK ephemeris file.
        ./
         <a 