218 lines
5.7 KiB
C
218 lines
5.7 KiB
C
#ifndef _STDDEF_H
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#ifndef _STDDEF_H_
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#ifndef _ANSI_STDDEF_H
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/* Any one of these symbols __need_* means that GNU libc
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wants us just to define one data type. So don't define
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the symbols that indicate this file's entire job has been done. */
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#if (!defined(__need_wchar_t) && !defined(__need_size_t) \
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&& !defined(__need_ptrdiff_t) && !defined(__need_NULL))
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#define _STDDEF_H
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#define _STDDEF_H_
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/* snaroff@next.com says the NeXT needs this. */
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#define _ANSI_STDDEF_H
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#endif
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#ifndef __sys_stdtypes_h
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/* This avoids lossage on SunOS but only if stdtypes.h comes first.
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There's no way to win with the other order! Sun lossage. */
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/* On 4.3bsd-net2, make sure ansi.h is included, so we have
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one less case to deal with in the following. */
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#if defined (__BSD_NET2__) || defined (____386BSD____)
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#include <machine/ansi.h>
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#endif
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/* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
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defined if the corresponding type is *not* defined. */
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#ifdef _ANSI_H_
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#ifndef _SIZE_T_
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#define _SIZE_T
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#endif
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#ifndef _PTRDIFF_T_
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#define _PTRDIFF_T
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#endif
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#ifndef _WCHAR_T_
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#define _WCHAR_T
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#endif
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/* Undef _FOO_T_ if we are supposed to define foo_t. */
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#if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
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#undef _PTRDIFF_T_
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#endif
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#if defined (__need_size_t) || defined (_STDDEF_H_)
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#undef _SIZE_T_
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#endif
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#if defined (__need_wchar_t) || defined (_STDDEF_H_)
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#undef _WCHAR_T_
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#endif
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#endif /* _ANSI_H_ */
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/* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
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Just ignore it. */
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#if defined (__sequent__) && defined (_PTRDIFF_T_)
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#undef _PTRDIFF_T_
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#endif
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/* In case nobody has defined these types, but we aren't running under
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GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
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__WCHAR_TYPE__ have reasonable values. This can happen if the
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parts of GCC is compiled by an older compiler, that actually
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include gstddef.h, such as collect2. */
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/* Signed type of difference of two pointers. */
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/* Define this type if we are doing the whole job,
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or if we want this type in particular. */
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#if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
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#ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */
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#ifndef _T_PTRDIFF_
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#ifndef _T_PTRDIFF
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#ifndef __PTRDIFF_T
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#ifndef _PTRDIFF_T_
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#ifndef ___int_ptrdiff_t_h
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#ifndef _GCC_PTRDIFF_T
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#define _PTRDIFF_T
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#define _T_PTRDIFF_
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#define _T_PTRDIFF
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#define __PTRDIFF_T
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#define _PTRDIFF_T_
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#define ___int_ptrdiff_t_h
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#define _GCC_PTRDIFF_T
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#ifndef __PTRDIFF_TYPE__
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#define __PTRDIFF_TYPE__ long int
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#endif
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typedef __PTRDIFF_TYPE__ ptrdiff_t;
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#endif /* _GCC_PTRDIFF_T */
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#endif /* ___int_ptrdiff_t_h */
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#endif /* _PTRDIFF_T_ */
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#endif /* __PTRDIFF_T */
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#endif /* _T_PTRDIFF */
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#endif /* _T_PTRDIFF_ */
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#endif /* _PTRDIFF_T */
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/* If this symbol has done its job, get rid of it. */
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#undef __need_ptrdiff_t
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#endif /* _STDDEF_H or __need_ptrdiff_t. */
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/* Unsigned type of `sizeof' something. */
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/* Define this type if we are doing the whole job,
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or if we want this type in particular. */
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#if defined (_STDDEF_H) || defined (__need_size_t)
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#ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
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#ifndef _SYS_SIZE_T_H
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#ifndef _T_SIZE_
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#ifndef _T_SIZE
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#ifndef __SIZE_T
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#ifndef _SIZE_T_
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#ifndef ___int_size_t_h
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#ifndef _GCC_SIZE_T
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#ifndef _SIZET_
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#define _SIZE_T
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#define _SYS_SIZE_T_H
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#define _T_SIZE_
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#define _T_SIZE
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#define __SIZE_T
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#define _SIZE_T_
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#define ___int_size_t_h
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#define _GCC_SIZE_T
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#define _SIZET_
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#ifndef __SIZE_TYPE__
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#define __SIZE_TYPE__ long unsigned int
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#endif
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#if !(defined (__GNUG__) && defined (size_t))
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typedef __SIZE_TYPE__ size_t;
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#endif /* !(defined (__GNUG__) && defined (size_t)) */
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#endif /* _SIZET_ */
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#endif /* _GCC_SIZE_T */
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#endif /* ___int_size_t_h */
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#endif /* _SIZE_T_ */
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#endif /* __SIZE_T */
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#endif /* _T_SIZE */
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#endif /* _T_SIZE_ */
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#endif /* _SYS_SIZE_T_H */
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#endif /* _SIZE_T */
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#undef __need_size_t
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#endif /* _STDDEF_H or __need_size_t. */
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/* Wide character type.
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Locale-writers should change this as necessary to
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be big enough to hold unique values not between 0 and 127,
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and not (wchar_t) -1, for each defined multibyte character. */
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/* Define this type if we are doing the whole job,
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or if we want this type in particular. */
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#if defined (_STDDEF_H) || defined (__need_wchar_t)
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#ifndef _WCHAR_T
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#ifndef _T_WCHAR_
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#ifndef _T_WCHAR
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#ifndef __WCHAR_T
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#ifndef _WCHAR_T_
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#ifndef ___int_wchar_t_h
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#ifndef _GCC_WCHAR_T
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#define _WCHAR_T
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#define _T_WCHAR_
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#define _T_WCHAR
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#define __WCHAR_T
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#define _WCHAR_T_
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#define ___int_wchar_t_h
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#define _GCC_WCHAR_T
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#ifndef __WCHAR_TYPE__
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#define __WCHAR_TYPE__ int
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#endif
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#ifdef __GNUG__
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/* In C++, wchar_t is a distinct basic type,
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and we can expect __wchar_t to be defined by cc1plus. */
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typedef __wchar_t wchar_t;
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#else
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/* In C, cpp tells us which type to make an alias for. */
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typedef __WCHAR_TYPE__ wchar_t;
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#endif
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#endif
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#endif
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#endif
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#endif
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#endif
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#endif
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#endif
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#undef __need_wchar_t
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#endif /* _STDDEF_H or __need_wchar_t. */
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/* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
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are already defined. */
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#ifdef _ANSI_H_
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#ifdef _GCC_PTRDIFF_T_
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#undef _PTRDIFF_T_
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#endif
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#ifdef _GCC_SIZE_T_
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#undef _SIZE_T_
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#endif
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#ifdef _GCC_WCHAR_T_
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#undef _WCHAR_T_
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#endif
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#endif /* _ANSI_H_ */
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#endif /* __sys_stdtypes_h */
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/* A null pointer constant. */
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#if defined (_STDDEF_H) || defined (__need_NULL)
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#undef NULL /* in case <stdio.h> has defined it. */
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#define NULL ((void *)0)
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#endif /* NULL not defined and <stddef.h> or need NULL. */
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#undef __need_NULL
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#ifdef _STDDEF_H
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/* Offset of member MEMBER in a struct of type TYPE. */
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#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
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#endif /* _STDDEF_H was defined this time */
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#endif /* _ANSI_STDDEF_H was not defined before */
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#endif /* _STDDEF_H_ was not defined before */
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#endif /* _STDDEF_H was not defined before */
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