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huge                     huge-Non-Standard Type Modifier

    A huge data item may be located anywhere in memory--it is not assumed
    to reside in the current data segment.  A huge data item can exceed
    64K bytes in size.  Huge does not apply to functions, only to data.

    Huge pointers are similar to far pointers, in that both are 32-bit
    pointers containing a 16-bit segment address and a 16-bit offset.
    Huge pointers, however, are normalized, which means that as much of
    their value as possible is stored in the segment address.  This means
    that the offset portion of a huge pointer cannot be larger than 15
    (base 10), because segments start every 16 bytes (base 10).

    As a result of the normalization of huge pointers, there is only one
    huge pointer for each memory address.  That's quite different from
    the situation with far pointers, where many different segment:offset
    pairs can refer to the same address.  The following ramifications
    arise from the fact that there can be only one huge pointer for each
    address:

        The == and != operators work correctly with huge pointers; they
        do not always work correctly with far pointers.

        The results of the <, <=, >, and >= operators work correctly with
        huge pointers.

        Most important, huge pointers do not "wrap-around."  Because of
        normalization, the segment portion of a huge pointer is adjusted
        every time the offset "wraps" from 15 back to 0.  Because the
        segment portion is constantly adjusted, you can use huge pointers
        to work with data structures greater than 64k in size.

      Notes:    The price of using huge pointers is the additional time
                involved in the overhead of normalization.  Huge pointer
                operations are noticeably slower than far or near pointer
                operations.

  -------------------------------- Example ---------------------------------

           char huge table[70000];
           char huge *hpc;
           char huge **hppc;
           char huge * huge *hphpc;
           long int huge *check();

           i = sizeof(char huge *);