Dos6.0

				/***
				*malloc.h - declarations and definitions for memory allocation functions
				*
				*	Copyright (c) 1985-1990, Microsoft Corporation.  All rights reserved.
				*
				*Purpose:
				*	Contains the function declarations for memory allocation functions;
				*	also defines manifest constants and types used by the heap routines.
				*	[System V]
				*
				****/
				
				#if defined(_DLL) && !defined(_MT)
				#error Cannot define _DLL without _MT
				#endif
				
				#ifdef _MT
				#define _FAR_ _far
				#else
				#define _FAR_
				#endif
				
				
				/* constants for based heap routines */
				
				#if (_MSC_VER >= 600)
				#define _NULLSEG	((_segment)0)
				#define _NULLOFF	((void _based(void) *)0xffff)
				#endif
				
				
				/* constants for _heapchk/_heapset/_heapwalk routines */
				
				#define _HEAPEMPTY	(-1)
				#define _HEAPOK 	(-2)
				#define _HEAPBADBEGIN	(-3)
				#define _HEAPBADNODE	(-4)
				#define _HEAPEND	(-5)
				#define _HEAPBADPTR	(-6)
				#define _FREEENTRY	0
				#define _USEDENTRY	1
				
				
				/* maximum heap request that can ever be honored */
				
				#define _HEAP_MAXREQ	0xFFE8
				
				
				/* types and structures */
				
				#ifndef _SIZE_T_DEFINED
				typedef unsigned int size_t;
				#define _SIZE_T_DEFINED
				#endif
				
				
				#ifndef _HEAPINFO_DEFINED
				typedef struct _heapinfo {
					int _far * _pentry;
					size_t _size;
					int _useflag;
					} _HEAPINFO;
				#define _HEAPINFO_DEFINED
				#endif
				
				
				/* external variable declarations */
				
				#ifdef _DLL
				extern unsigned int _FAR_ _cdecl _amblksiz;
				#else
				extern unsigned int _near _cdecl _amblksiz;
				#endif
				
				
				/* based heap function prototypes */
				
				#if (_MSC_VER >= 600)
				void _based(void) * _FAR_ _cdecl _bcalloc(_segment, size_t, size_t);
				void _based(void) * _FAR_ _cdecl _bexpand(_segment,
					void _based(void) *, size_t);
				void _FAR_ _cdecl _bfree(_segment, void _based(void) *);
				int _FAR_ _cdecl _bfreeseg(_segment);
				int _FAR_ _cdecl _bheapadd(_segment, void _based(void) *, size_t);
				int _FAR_ _cdecl _bheapchk(_segment);
				int _FAR_ _cdecl _bheapmin(_segment);
				_segment _FAR_ _cdecl _bheapseg(size_t);
				int _FAR_ _cdecl _bheapset(_segment, unsigned int);
				int _FAR_ _cdecl _bheapwalk(_segment, _HEAPINFO *);
				void _based(void) * _FAR_ _cdecl _bmalloc(_segment, size_t);
				size_t _FAR_ _cdecl _bmsize(_segment, void _based(void) *);
				void _based(void) * _FAR_ _cdecl _brealloc(_segment,
					void _based(void) *, size_t);
				#endif
				
				
				/* function prototypes */
				
				void _FAR_ * _FAR_ _cdecl alloca(size_t);
				void _FAR_ * _FAR_ _cdecl calloc(size_t, size_t);
				void _FAR_ * _FAR_ _cdecl _expand(void _FAR_ *, size_t);
				void _far * _FAR_ _cdecl _fcalloc(size_t, size_t);
				void _far * _FAR_ _cdecl _fexpand(void _far *, size_t);
				void _FAR_ _cdecl _ffree(void _far *);
				int _FAR_ _cdecl _fheapchk(void);
				int _FAR_ _cdecl _fheapmin(void);
				int _FAR_ _cdecl _fheapset(unsigned int);
				int _FAR_ _cdecl _fheapwalk(_HEAPINFO _FAR_ *);
				void _far * _FAR_ _cdecl _fmalloc(size_t);
				size_t _FAR_ _cdecl _fmsize(void _far *);
				void _far * _FAR_ _cdecl _frealloc(void _far *, size_t);
				unsigned int _FAR_ _cdecl _freect(size_t);
				void _FAR_ _cdecl free(void _FAR_ *);
				void _huge * _FAR_ _cdecl halloc(long, size_t);
				void _FAR_ _cdecl hfree(void _huge *);
				int _FAR_ _cdecl _heapadd(void _far *, size_t);
				int _FAR_ _cdecl _heapchk(void);
				int _FAR_ _cdecl _heapmin(void);
				int _FAR_ _cdecl _heapset(unsigned int);
				int _FAR_ _cdecl _heapwalk(_HEAPINFO _FAR_ *);
				void _FAR_ * _FAR_ _cdecl malloc(size_t);
				size_t _FAR_ _cdecl _memavl(void);
				size_t _FAR_ _cdecl _memmax(void);
				size_t _FAR_ _cdecl _msize(void _FAR_ *);
				void _near * _FAR_ _cdecl _ncalloc(size_t, size_t);
				void _near * _FAR_ _cdecl _nexpand(void _near *, size_t);
				void _FAR_ _cdecl _nfree(void _near *);
				int _FAR_ _cdecl _nheapchk(void);
				int _FAR_ _cdecl _nheapmin(void);
				int _FAR_ _cdecl _nheapset(unsigned int);
				int _FAR_ _cdecl _nheapwalk(_HEAPINFO _FAR_ *);
				void _near * _FAR_ _cdecl _nmalloc(size_t);
				size_t _FAR_ _cdecl _nmsize(void _near *);
				void _near * _FAR_ _cdecl _nrealloc(void _near *, size_t);
				void _FAR_ * _FAR_ _cdecl realloc(void _FAR_ *, size_t);
				size_t _FAR_ _cdecl stackavail(void);