USAGE
   signed int sccdl2dow(
           signed char *dayofweek,
           signed long date );

PROTOTYPE IN
   sc_clock.h

DESCRIPTION
   sccdl2dow converts a long integer date to an integer dayofweek.
   dayofweek will be a value between 0 (Sunday) and 6 (Saturday).

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

   void main()
   {
     char dayofweek;
     long date;

     sccdi2l(&date,1990,5,16);
     sccdl2dow(&dayofweek,date);
     printf("%d\n",dayofweek);
   }