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_nmsize()                Return Size of Near Memory Block

 #include   <malloc.h>                   Required for declarations only

 unsigned   int _nmsize(ptr);
 char near  ptr;                         Pointer to allocated near memory

    _nmsize() returns the number of bytes in the memory block pointed to
    by 'ptr'.  The block should have been allocated with _nmalloc().

    Returns:    Size in bytes of the memory block.

      Notes:    Use _msize() to get the size of blocks allocated with
                malloc(), calloc(), or realloc(). Use _fmsize() to get
                the size of blocks allocated with _fmalloc().

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

    The following statements allocate 500 bytes in a near data segment
    and then report the size of the allocated memory.

            #include <malloc.h>
            #include <stdio.h>     /* for printf and NULL */

            char near *near_memptr;

            main()
            {
                if ((near_memptr = _nmalloc(500)) == NULL)
                    printf("not enough room to allocate memory\n");
                else
                    printf("%u bytes allocated\n", _nmsize(near_memptr));
            }