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                              _farptr_tolong

   Usage
   #include <dos.h>
   long _farptr_tolong(void far *ptr);

   Description
   _farptr_tolong  converts  from a far pointer to a long  which  is  the
   address that the far pointer represents.

   Example
   #include <stdio.h>
   #include <dos.h>
   main()
   {
   void far *pin;
   long value;
        pin = MK_FP(0xB754,0x0013);
        value = _farptr_tolong(pin);
        printf("Converting %lp to a long should be 0xB7553,"
                  "\nit actually is 0x%lX\n",pin,value);
   }
   Return Value
   _farptr_tolong returns the long.