USAGE
   signed int scctsdiff(
           signed long *diff,
           signed char *time1,
           signed int format1,
           signed char *time2,
           signed int format2 );

PROTOTYPE IN
   sc_clock.h

DESCRIPTION
   scctsdiff returns the difference in seconds between time1 and
   time2. The two ASCIIZ time strings can be in any order, but must be
   valid string styles (format1, format2).

   Time string styles:
   SC_CSHMS   hh:mm:ss
   SC_MIL     military (0000-2359)

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

   void main()
   {
     signed long d;

     scctsdiff(&d, "12:03:59", SC_CSHMS,"11:30:00", SC_CSHMS);
     printf("%ld",d);
   }