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 _bheapchk()             Check Based Heap for Consistency

 #include    <malloc.h>

 int _bheapchk(seg);
 _segment seg;                  Based heap segment

    This is the based heap version of _heapchk(); it checks for minimal
    consistency in the based heap indicated by seg and returns one of
    these constants:

             _HEAPOK, _HEAPEMPTY, _HEAPBADBEGIN, or _HEAPBADNODE

    See _heapchk() for more information.

    Returns:    _HEAPOK, _HEAPEMPTY, _HEAPBADBEGIN, or _HEAPBADNODE

 Portability:   Not supported by the ANSI standard.