USAGE
   signed int sccdl2i(
           signed int *year,
           signed int *month,
           signed int *day,
           signed long date );

PROTOTYPE IN
   sc_clock.h

DESCRIPTION
   sccdl2i converts a long integer date into three integers: year,
   month, and day. The long date is tested for validity before
   the conversion takes place.

EXAMPLE
   #include <stdio.h>
   #include <softc.h>
   #include <sc_clock.h>

   void main()
   {
     int year, month, day;
     long date;

     sccdi2l(&date,1990,5,16);
     date++;
     sccdl2i(&year,&month,&day,date);
     printf("%d %d %d\n",year,month,day);
   }