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haiku/headers/posix/stddef.h
Axel Dörfler f8fdd89ffb Some header work to make it more posix compliant. 
git-svn-id: file:///srv/svn/repos/haiku/trunk/current@3080 a95241bf-73f2-0310-859d-f6bbb57e9c96
2003-04-19 17:35:55 +00:00

342 lines
9.7 KiB
C
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// XXX taken from /boot/develop/tools/gnupro/lib/gcc-lib/i586-beos/2.9-beos-991026/include
// XXX From GCC, exact license unknown. Must be LGPL or better :)
// XXX Doesn't belong into posix, should be replaced as soon as possible
#include <size_t.h>
#include <wchar_t.h>
#if (!defined(_STDDEF_H) && !defined(_STDDEF_H_) && !defined(_ANSI_STDDEF_H) \
&& !defined(__STDDEF_H__)) \
|| defined(__need_wchar_t) || defined(__need_size_t) \
|| defined(__need_ptrdiff_t) || defined(__need_NULL) \
|| defined(__need_wint_t)
/* Any one of these symbols __need_* means that GNU libc
wants us just to define one data type. So don't define
the symbols that indicate this file's entire job has been done. */
#if (!defined(__need_wchar_t) && !defined(__need_size_t) \
&& !defined(__need_ptrdiff_t) && !defined(__need_NULL) \
&& !defined(__need_wint_t))
#define _STDDEF_H
#define _STDDEF_H_
/* snaroff@next.com says the NeXT needs this. */
#define _ANSI_STDDEF_H
/* Irix 5.1 needs this. */
#define __STDDEF_H__
#endif
#ifndef __sys_stdtypes_h
/* This avoids lossage on SunOS but only if stdtypes.h comes first.
There's no way to win with the other order! Sun lossage. */
/* On 4.3bsd-net2, make sure ansi.h is included, so we have
one less case to deal with in the following. */
#if defined (__BSD_NET2__) || defined (____386BSD____) || defined (__FreeBSD__) || defined(__NetBSD__)
#include <machine/ansi.h>
#endif
/* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
defined if the corresponding type is *not* defined.
FreeBSD-2.1 defines _MACHINE_ANSI_H_ instead of _ANSI_H_ */
#if defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_)
#if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_)
#define _SIZE_T
#endif
#if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_)
#define _PTRDIFF_T
#endif
/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
instead of _WCHAR_T_. */
#if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_)
#ifndef _BSD_WCHAR_T_
#define _WCHAR_T
#endif
#endif
/* Undef _FOO_T_ if we are supposed to define foo_t. */
#if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
#undef _PTRDIFF_T_
#undef _BSD_PTRDIFF_T_
#endif
#if defined (__need_size_t) || defined (_STDDEF_H_)
#undef _SIZE_T_
#undef _BSD_SIZE_T_
#endif
#if defined (__need_wchar_t) || defined (_STDDEF_H_)
#undef _WCHAR_T_
#undef _BSD_WCHAR_T_
#endif
#endif /* defined(_ANSI_H_) || defined(_MACHINE_ANSI_H_) */
/* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
Just ignore it. */
#if defined (__sequent__) && defined (_PTRDIFF_T_)
#undef _PTRDIFF_T_
#endif
/* On VxWorks, <type/vxTypesBase.h> may have defined macros like
_TYPE_size_t which will typedef size_t. fixincludes patched the
vxTypesBase.h so that this macro is only defined if _GCC_SIZE_T is
not defined, and so that defining this macro defines _GCC_SIZE_T.
If we find that the macros are still defined at this point, we must
invoke them so that the type is defined as expected. */
#if defined (_TYPE_ptrdiff_t) && (defined (__need_ptrdiff_t) || defined (_STDDEF_H_))
_TYPE_ptrdiff_t;
#undef _TYPE_ptrdiff_t
#endif
#if defined (_TYPE_size_t) && (defined (__need_size_t) || defined (_STDDEF_H_))
_TYPE_size_t;
#undef _TYPE_size_t
#endif
#if defined (_TYPE_wchar_t) && (defined (__need_wchar_t) || defined (_STDDEF_H_))
_TYPE_wchar_t;
#undef _TYPE_wchar_t
#endif
/* In case nobody has defined these types, but we aren't running under
GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
__WCHAR_TYPE__ have reasonable values. This can happen if the
parts of GCC is compiled by an older compiler, that actually
include gstddef.h, such as collect2. */
/* Signed type of difference of two pointers. */
/* Define this type if we are doing the whole job,
or if we want this type in particular. */
#if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
#ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */
#ifndef _T_PTRDIFF_
#ifndef _T_PTRDIFF
#ifndef __PTRDIFF_T
#ifndef _PTRDIFF_T_
#ifndef _BSD_PTRDIFF_T_
#ifndef ___int_ptrdiff_t_h
#ifndef _GCC_PTRDIFF_T
#define _PTRDIFF_T
#define _T_PTRDIFF_
#define _T_PTRDIFF
#define __PTRDIFF_T
#define _PTRDIFF_T_
#define _BSD_PTRDIFF_T_
#define ___int_ptrdiff_t_h
#define _GCC_PTRDIFF_T
#ifndef __PTRDIFF_TYPE__
#define __PTRDIFF_TYPE__ long int
#endif
typedef __PTRDIFF_TYPE__ ptrdiff_t;
#endif /* _GCC_PTRDIFF_T */
#endif /* ___int_ptrdiff_t_h */
#endif /* _BSD_PTRDIFF_T_ */
#endif /* _PTRDIFF_T_ */
#endif /* __PTRDIFF_T */
#endif /* _T_PTRDIFF */
#endif /* _T_PTRDIFF_ */
#endif /* _PTRDIFF_T */
/* If this symbol has done its job, get rid of it. */
#undef __need_ptrdiff_t
#endif /* _STDDEF_H or __need_ptrdiff_t. */
/* Unsigned type of `sizeof' something. */
/* Define this type if we are doing the whole job,
or if we want this type in particular. */
#if defined (_STDDEF_H) || defined (__need_size_t)
#ifndef __size_t__ /* BeOS */
#ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
#ifndef _SYS_SIZE_T_H
#ifndef _T_SIZE_
#ifndef _T_SIZE
#ifndef __SIZE_T
#ifndef _SIZE_T_
#ifndef _BSD_SIZE_T_
#ifndef _SIZE_T_DEFINED_
#ifndef _SIZE_T_DEFINED
#ifndef ___int_size_t_h
#ifndef _GCC_SIZE_T
#ifndef _SIZET_
#ifndef __size_t
#define __size_t__ /* BeOS */
#define _SIZE_T
#define _SYS_SIZE_T_H
#define _T_SIZE_
#define _T_SIZE
#define __SIZE_T
#define _SIZE_T_
#define _BSD_SIZE_T_
#define _SIZE_T_DEFINED_
#define _SIZE_T_DEFINED
#define ___int_size_t_h
#define _GCC_SIZE_T
#define _SIZET_
#define __size_t
#ifndef __SIZE_TYPE__
#define __SIZE_TYPE__ long unsigned int
#endif
#if !(defined (__GNUG__) && defined (size_t))
#endif /* !(defined (__GNUG__) && defined (size_t)) */
#endif /* __size_t */
#endif /* _SIZET_ */
#endif /* _GCC_SIZE_T */
#endif /* ___int_size_t_h */
#endif /* _SIZE_T_DEFINED */
#endif /* _SIZE_T_DEFINED_ */
#endif /* _BSD_SIZE_T_ */
#endif /* _SIZE_T_ */
#endif /* __SIZE_T */
#endif /* _T_SIZE */
#endif /* _T_SIZE_ */
#endif /* _SYS_SIZE_T_H */
#endif /* _SIZE_T */
#endif /* __size_t__ */
#undef __need_size_t
#endif /* _STDDEF_H or __need_size_t. */
/* Wide character type.
Locale-writers should change this as necessary to
be big enough to hold unique values not between 0 and 127,
and not (wchar_t) -1, for each defined multibyte character. */
/* Define this type if we are doing the whole job,
or if we want this type in particular. */
#if defined (_STDDEF_H) || defined (__need_wchar_t)
#ifndef __wchar_t__ /* BeOS */
#ifndef _WCHAR_T
#ifndef _T_WCHAR_
#ifndef _T_WCHAR
#ifndef __WCHAR_T
#ifndef _WCHAR_T_
#ifndef _BSD_WCHAR_T_
#ifndef _WCHAR_T_DEFINED_
#ifndef _WCHAR_T_DEFINED
#ifndef _WCHAR_T_H
#ifndef ___int_wchar_t_h
#ifndef __INT_WCHAR_T_H
#ifndef _GCC_WCHAR_T
#define __wchar_t__ /* BeOS */
#define _WCHAR_T
#define _T_WCHAR_
#define _T_WCHAR
#define __WCHAR_T
#define _WCHAR_T_
#define _BSD_WCHAR_T_
#define _WCHAR_T_DEFINED_
#define _WCHAR_T_DEFINED
#define _WCHAR_T_H
#define ___int_wchar_t_h
#define __INT_WCHAR_T_H
#define _GCC_WCHAR_T
/* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other
symbols in the _FOO_T_ family, stays defined even after its
corresponding type is defined). If we define wchar_t, then we
must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if
we undef _WCHAR_T_, then we must also define rune_t, since
headers like runetype.h assume that if machine/ansi.h is included,
and _BSD_WCHAR_T_ is not defined, then rune_t is available.
machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of
the same type." */
#ifdef _BSD_WCHAR_T_
#undef _BSD_WCHAR_T_
#ifdef _BSD_RUNE_T_
#if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
typedef _BSD_RUNE_T_ rune_t;
#endif
#endif
#endif
#ifndef __WCHAR_TYPE__
#define __WCHAR_TYPE__ int
#endif
#ifndef __cplusplus
typedef __WCHAR_TYPE__ wchar_t;
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif
#endif /* __wchar_t__ */
#undef __need_wchar_t
#endif /* _STDDEF_H or __need_wchar_t. */
#if defined (_STDDEF_H) || defined (__need_wint_t)
#ifndef _WINT_T
#define _WINT_T
#ifndef __WINT_TYPE__
#define __WINT_TYPE__ unsigned int
#endif
typedef __WINT_TYPE__ wint_t;
#endif
#undef __need_wint_t
#endif
/* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
are already defined. */
/* BSD/OS 3.1 requires the MACHINE_ANSI_H check here. FreeBSD 2.x apparently
does not, even though there is a check for MACHINE_ANSI_H above. */
#if defined(_ANSI_H_) || (defined(__bsdi__) && defined(_MACHINE_ANSI_H_))
/* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_
are probably typos and should be removed before 2.8 is released. */
#ifdef _GCC_PTRDIFF_T_
#undef _PTRDIFF_T_
#undef _BSD_PTRDIFF_T_
#endif
#ifdef _GCC_SIZE_T_
#undef _SIZE_T_
#undef _BSD_SIZE_T_
#endif
#ifdef _GCC_WCHAR_T_
#undef _WCHAR_T_
#undef _BSD_WCHAR_T_
#endif
/* The following ones are the real ones. */
#ifdef _GCC_PTRDIFF_T
#undef _PTRDIFF_T_
#undef _BSD_PTRDIFF_T_
#endif
#ifdef _GCC_SIZE_T
#undef _SIZE_T_
#undef _BSD_SIZE_T_
#endif
#ifdef _GCC_WCHAR_T
#undef _WCHAR_T_
#undef _BSD_WCHAR_T_
#endif
#endif /* _ANSI_H_ || ( __bsdi__ && _MACHINE_ANSI_H_ ) */
#endif /* __sys_stdtypes_h */
/* A null pointer constant. */
#if defined (_STDDEF_H) || defined (__need_NULL)
#undef NULL /* in case <stdio.h> has defined it. */
#ifdef __GNUG__
#define NULL __null
#else /* G++ */
#define NULL ((void *)0)
#endif /* G++ */
#endif /* NULL not defined and <stddef.h> or need NULL. */
#undef __need_NULL
#ifdef _STDDEF_H
/* Offset of member MEMBER in a struct of type TYPE. */
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
#endif /* _STDDEF_H was defined this time */
#endif /* !_STDDEF_H && !_STDDEF_H_ && !_ANSI_STDDEF_H && !__STDDEF_H__
|| __need_XXX was not defined before */
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