154 lines
3.5 KiB
C
154 lines
3.5 KiB
C
/***
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*stddef.h - definitions/declarations for common constants, types, variables
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*
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* Copyright (c) 1985-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This file contains definitions and declarations for some commonly
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* used constants, types, and variables.
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* [ANSI]
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*
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*Revision History:
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* 10-02-87 JCR Changed NULL definition #else to #elif (C || L || H)
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* 12-11-87 JCR Added "_loadds" functionality
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* 12-16-87 JCR Added threadid definition
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* 12-18-87 JCR Added _FAR_ to declarations
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* 02-10-88 JCR Cleaned up white space
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* 08-19-88 GJF Revised to also work for the 386
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* 05-03-89 JCR Added _INTERNAL_IFSTRIP for relinc usage
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* 06-06-89 JCR 386: Made _threadid a function
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* 08-01-89 GJF Cleanup, now specific to OS/2 2.0 (i.e., 386 flat
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* model). Also added parens to *_errno definition
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* (same as 11-14-88 change to CRT version).
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* 10-30-89 GJF Fixed copyright
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* 11-02-89 JCR Changed "DLL" to "_DLL"
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* 03-02-90 GJF Added #ifndef _INC_STDDEF and #include <cruntime.h>
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* stuff. Also, removed some (now) useless preprocessor
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* directives.
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* 04-10-90 GJF Replaced _cdecl with _VARTYPE1 or _CALLTYPE1, as
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* appropriate.
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* 08-16-90 SBM Made MTHREAD _errno return int *
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* 10-09-90 GJF Changed return type of __threadid() to unsigned long *.
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* 11-12-90 GJF Changed NULL to (void *)0.
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* 02-11-91 GJF Added offsetof() macro.
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* 02-12-91 GJF Only #define NULL if it isn't #define-d.
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* 03-21-91 KRS Added wchar_t typedef, also in stdlib.h.
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* 06-27-91 GJF Revised __threadid, added __threadhandle, both
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* for Win32 [_WIN32_].
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* 08-20-91 JCR C++ and ANSI naming
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* 01-29-92 GJF Got rid of silly macro defining _threadhandle to be
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* __threadhandle (no reason for the former name to be
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* be defined).
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* 08-05-92 GJF Function calling type and variable type macros.
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* 01-21-93 GJF Removed support for C6-386's _cdecl.
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*
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****/
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#ifndef _INC_STDDEF
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _INTERNAL_IFSTRIP_
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#include <cruntime.h>
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#endif /* _INTERNAL_IFSTRIP_ */
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/*
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* Conditional macro definition for function calling type and variable type
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* qualifiers.
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*/
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#if ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
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/*
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* Definitions for MS C8-32 (386/486) compiler
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*/
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#define _CRTAPI1 __cdecl
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#define _CRTAPI2 __cdecl
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#else
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/*
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* Other compilers (e.g., MIPS)
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*/
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#define _CRTAPI1
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#define _CRTAPI2
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#endif
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/* define NULL pointer value and the offset() macro */
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#ifndef NULL
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#ifdef __cplusplus
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#define NULL 0
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#else
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#define NULL ((void *)0)
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#endif
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#endif
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#define offsetof(s,m) (size_t)&(((s *)0)->m)
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/* declare reference to errno */
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#ifdef MTHREAD
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extern int * _CRTAPI1 _errno(void);
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#define errno (*_errno())
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#else
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extern int _CRTVAR1 errno;
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#endif
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/* define the implementation dependent size types */
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#ifndef _PTRDIFF_T_DEFINED
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typedef int ptrdiff_t;
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#define _PTRDIFF_T_DEFINED
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#endif
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#ifndef _SIZE_T_DEFINED
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typedef unsigned int size_t;
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#define _SIZE_T_DEFINED
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#endif
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#ifndef _WCHAR_T_DEFINED
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typedef unsigned short wchar_t;
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#define _WCHAR_T_DEFINED
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#endif
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#ifdef MTHREAD
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#ifdef _CRUISER_
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/* define pointer to thread id value */
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extern unsigned long * _CRTAPI1 __threadid(void);
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#define _threadid (__threadid())
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#else /* ndef _CRUISER_ */
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#ifdef _WIN32_
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extern unsigned long _CRTAPI1 __threadid(void);
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#define _threadid (__threadid())
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extern unsigned long _CRTAPI1 __threadhandle(void);
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#else /* ndef _WIN32_ */
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#error ERROR - ONLY CRUISER OR WIN32 TARGET SUPPORTED!
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#endif /* _WIN32_ */
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#endif /* _CRUISER_ */
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#endif
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#ifdef __cplusplus
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}
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#endif
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#define _INC_STDDEF
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#endif /* _INC_STDDEF */
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