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     Name
          FP_OFF, FP_SEG - Get the offset and segment of an address.

     Syntax
          #include <dos.h>

          unsigned FP_OFF(address)
          unsigned FP_SEG(address)
          void far *address;

     Description
          The FP_OFF and FP_SEG macros can be used to set or get the
          offset and segment, respectively, of address. In small- and
          medium-memory models, the FP_SEG and FP_OFF macros only work
          if the far pointer argument lies in the default data
          segment. If the far pointer is itself in a far data segment,
          the macros will not work correctly.

     Return Value
          The FP_OFF macro returns an offset. The FP_SEG macro returns
          a segment address.

     Example
          #include <malloc.h> #include <stdio.h>

          void far *p; unsigned int seg_val; unsigned int off_val;

          main()
           {
                  /* Point pointer at something */
                  p = _fmalloc(100);

                  /* Get address pointed to */
                  seg_val = FP_SEG(p);
                  off_val = FP_OFF(p);
                  printf("Segment is %d; Offset is %d\n", seg_val,
          off_val);
           }

          This program uses FP_SEG and FP_OFF to obtain the segment
          and offset of the long pointer p.

                                                (printed 6/18/89)