windows-nt/Source/XPSP1/NT/base/crts/crtw32/h/stddef.h

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2020-09-26 03:20:57 -05:00
/***
*stddef.h - definitions/declarations for common constants, types, variables
*
* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
*
*Purpose:
* This file contains definitions and declarations for some commonly
* used constants, types, and variables.
* [ANSI]
*
* [Public]
*
*Revision History:
* 10-02-87 JCR Changed NULL definition #else to #elif (C || L || H)
* 12-11-87 JCR Added "_loadds" functionality
* 12-16-87 JCR Added threadid definition
* 12-18-87 JCR Added _FAR_ to declarations
* 02-10-88 JCR Cleaned up white space
* 08-19-88 GJF Revised to also work for the 386
* 05-03-89 JCR Added _INTERNAL_IFSTRIP for relinc usage
* 06-06-89 JCR 386: Made _threadid a function
* 08-01-89 GJF Cleanup, now specific to OS/2 2.0 (i.e., 386 flat
* model). Also added parens to *_errno definition
* (same as 11-14-88 change to CRT version).
* 10-30-89 GJF Fixed copyright
* 11-02-89 JCR Changed "DLL" to "_DLL"
* 03-02-90 GJF Added #ifndef _INC_STDDEF and #include <cruntime.h>
* stuff. Also, removed some (now) useless preprocessor
* directives.
* 04-10-90 GJF Replaced _cdecl with _VARTYPE1 or _CALLTYPE1, as
* appropriate.
* 08-16-90 SBM Made MTHREAD _errno return int *
* 10-09-90 GJF Changed return type of __threadid() to unsigned long *.
* 11-12-90 GJF Changed NULL to (void *)0.
* 02-11-91 GJF Added offsetof() macro.
* 02-12-91 GJF Only #define NULL if it isn't #define-d.
* 03-21-91 KRS Added wchar_t typedef, also in stdlib.h.
* 06-27-91 GJF Revised __threadid, added __threadhandle, both
* for Win32 [_WIN32_].
* 08-20-91 JCR C++ and ANSI naming
* 01-29-92 GJF Got rid of macro defining _threadhandle to be
* __threadhandle (no reason for the former name to be
* be defined).
* 08-05-92 GJF Function calling type and variable type macros.
* 01-21-93 GJF Removed support for C6-386's _cdecl.
* 04-06-93 SKS Replace _CRTAPI1/2 with __cdecl, _CRTVAR1 with nothing
* Remove support for OS/2, etc.
* 04-07-93 SKS Add _CRTIMP keyword for CRT DLL model
* Use link-time aliases for old names, not #define's
* 10-12-93 GJF Support NT and Cuda versions. Also, replace MTHREAD
* with _MT.
* 03-14-94 GJF Made declaration of errno match one in stdlib.h.
* 06-06-94 SKS Change if def(_MT) to if def(_MT) || def(_DLL)
* This will support single-thread apps using MSVCRT*.DLL
* 02-11-95 CFW Add _CRTBLD to avoid users getting wrong headers.
* 02-14-95 CFW Clean up Mac merge.
* 04-03-95 JCF Remove #ifdef _WIN32 around wchar_t.
* 12-14-95 JWM Add "#pragma once".
* 02-05-97 GJF Cleaned out obsolete support for _CRTAPI* and _NTSDK.
* Also, detab-ed
* 09-30-97 JWM Restored not-so-obsolete _CRTAPI1 support.
* 10-07-97 RDL Added IA64.
* 01-30-98 GJF Added appropriate defs for ptrdiff_t and offsetof
* 02-03-98 GJF Changes for Win64: added int_ptr and uint_ptr.
* 12-15-98 GJF Changes for 64-bit size_t.
* 05-13-99 PML Remove _CRTAPI1
* 05-17-99 PML Remove all Macintosh support.
* 10-06-99 PML Add _W64 modifier to types which are 32 bits in Win32,
* 64 bits in Win64.
*
****/
#if _MSC_VER > 1000 /*IFSTRIP=IGN*/
#pragma once
#endif
#ifndef _INC_STDDEF
#define _INC_STDDEF
#if !defined(_WIN32)
#error ERROR: Only Win32 target supported!
#endif
#ifndef _CRTBLD
/* This version of the header files is NOT for user programs.
* It is intended for use when building the C runtimes ONLY.
* The version intended for public use will not have this message.
*/
#error ERROR: Use of C runtime library internal header file.
#endif /* _CRTBLD */
#ifdef __cplusplus
extern "C" {
#endif
#ifndef _INTERNAL_IFSTRIP_
#include <cruntime.h>
#endif /* _INTERNAL_IFSTRIP_ */
#if !defined(_W64)
#if !defined(__midl) && (defined(_X86_) || defined(_M_IX86)) && _MSC_VER >= 1300 /*IFSTRIP=IGN*/
#define _W64 __w64
#else
#define _W64
#endif
#endif
/* Define _CRTIMP */
#ifndef _CRTIMP
#ifdef CRTDLL
#define _CRTIMP __declspec(dllexport)
#else /* ndef CRTDLL */
#ifdef _DLL
#define _CRTIMP __declspec(dllimport)
#else /* ndef _DLL */
#define _CRTIMP
#endif /* _DLL */
#endif /* CRTDLL */
#endif /* _CRTIMP */
/* Define __cdecl for non-Microsoft compilers */
#if ( !defined(_MSC_VER) && !defined(__cdecl) )
#define __cdecl
#endif
/* Define NULL pointer value */
#ifndef NULL
#ifdef __cplusplus
#define NULL 0
#else
#define NULL ((void *)0)
#endif
#endif
/* Declare reference to errno */
#if defined(_MT) || defined(_DLL)
_CRTIMP extern int * __cdecl _errno(void);
#define errno (*_errno())
#else /* ndef _MT && ndef _DLL */
_CRTIMP extern int errno;
#endif /* _MT || _DLL */
/* Define the implementation dependent size types */
#ifndef _INTPTR_T_DEFINED
#ifdef _WIN64
typedef __int64 intptr_t;
#else
typedef _W64 int intptr_t;
#endif
#define _INTPTR_T_DEFINED
#endif
#ifndef _UINTPTR_T_DEFINED
#ifdef _WIN64
typedef unsigned __int64 uintptr_t;
#else
typedef _W64 unsigned int uintptr_t;
#endif
#define _UINTPTR_T_DEFINED
#endif
#ifndef _PTRDIFF_T_DEFINED
#ifdef _WIN64
typedef __int64 ptrdiff_t;
#else
typedef _W64 int ptrdiff_t;
#endif
#define _PTRDIFF_T_DEFINED
#endif
#ifndef _SIZE_T_DEFINED
#ifdef _WIN64
typedef unsigned __int64 size_t;
#else
typedef _W64 unsigned int size_t;
#endif
#define _SIZE_T_DEFINED
#endif
#ifndef _WCHAR_T_DEFINED
typedef unsigned short wchar_t;
#define _WCHAR_T_DEFINED
#endif
/* Define offsetof macro */
#ifdef _WIN64
#define offsetof(s,m) (size_t)( (ptrdiff_t)&(((s *)0)->m) )
#else
#define offsetof(s,m) (size_t)&(((s *)0)->m)
#endif
#ifdef _MT
_CRTIMP extern unsigned long __cdecl __threadid(void);
#define _threadid (__threadid())
_CRTIMP extern uintptr_t __cdecl __threadhandle(void);
#endif
#ifdef __cplusplus
}
#endif
#endif /* _INC_STDDEF */