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1.1 root 1: #ifndef _STDDEF_H
2: #ifndef _STDDEF_H_
1.1.1.4 ! root 3: #ifndef _ANSI_STDDEF_H
1.1.1.3 root 4:
5: /* Any one of these symbols __need_* means that GNU libc
6: wants us just to define one data type. So don't define
7: the symbols that indicate this file's entire job has been done. */
8: #if (!defined(__need_wchar_t) && !defined(__need_size_t) \
9: && !defined(__need_ptrdiff_t) && !defined(__need_NULL))
1.1 root 10: #define _STDDEF_H
11: #define _STDDEF_H_
1.1.1.4 ! root 12: /* [email protected] says the NeXT needs this. */
! 13: #define _ANSI_STDDEF_H
1.1.1.3 root 14: #endif
1.1 root 15:
16: #ifndef __sys_stdtypes_h
1.1.1.4 ! root 17: /* This avoids lossage on SunOS but only if stdtypes.h comes first.
1.1 root 18: There's no way to win with the other order! Sun lossage. */
19:
1.1.1.4 ! root 20: /* On 4.3bsd-net2, make sure ansi.h is included, so we have
! 21: one less case to deal with in the following. */
! 22: #if defined (__BSD_NET2__) || defined (____386BSD____)
! 23: #include <machine/ansi.h>
! 24: #endif
! 25:
! 26: /* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
! 27: defined if the corresponding type is *not* defined. */
! 28: #ifdef _ANSI_H_
! 29: #ifndef _SIZE_T_
! 30: #define _SIZE_T
! 31: #endif
! 32: #ifndef _PTRDIFF_T_
! 33: #define _PTRDIFF_T
! 34: #endif
! 35: #ifndef _WCHAR_T_
! 36: #define _WCHAR_T
! 37: #endif
! 38: #undef _PTRDIFF_T_
! 39: #ifndef __need_ptrdiff_t
! 40: #undef _SIZE_T_
! 41: #undef _WCHAR_T_
! 42: #endif
! 43: #endif /* _ANSI_H_ */
! 44:
1.1 root 45: /* In case nobody has defined these types, but we aren't running under
46: GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
47: __WCHAR_TYPE__ have reasonable values. This can happen if the
48: parts of GCC is compiled by an older compiler, that actually
49: include gstddef.h, such as collect2. */
50:
51: /* Signed type of difference of two pointers. */
52:
1.1.1.4 ! root 53: /* Define this type if we are doing the whole job,
! 54: or if we want this type in particular. */
! 55: #if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
1.1 root 56: #ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */
1.1.1.2 root 57: #ifndef _T_PTRDIFF_
1.1 root 58: #ifndef _T_PTRDIFF
59: #ifndef __PTRDIFF_T
60: #ifndef _PTRDIFF_T_
61: #ifndef ___int_ptrdiff_t_h
1.1.1.2 root 62: #ifndef _GCC_PTRDIFF_T
1.1 root 63: #define _PTRDIFF_T
1.1.1.2 root 64: #define _T_PTRDIFF_
1.1 root 65: #define _T_PTRDIFF
66: #define __PTRDIFF_T
67: #define _PTRDIFF_T_
68: #define ___int_ptrdiff_t_h
1.1.1.2 root 69: #define _GCC_PTRDIFF_T
1.1 root 70: #ifndef __PTRDIFF_TYPE__
71: #define __PTRDIFF_TYPE__ long int
72: #endif
73: typedef __PTRDIFF_TYPE__ ptrdiff_t;
1.1.1.2 root 74: #endif /* _GCC_PTRDIFF_T */
1.1 root 75: #endif /* ___int_ptrdiff_t_h */
76: #endif /* _PTRDIFF_T_ */
77: #endif /* __PTRDIFF_T */
78: #endif /* _T_PTRDIFF */
1.1.1.2 root 79: #endif /* _T_PTRDIFF_ */
1.1 root 80: #endif /* _PTRDIFF_T */
81:
1.1.1.3 root 82: /* If this symbol has done its job, get rid of it. */
83: #undef __need_ptrdiff_t
84:
1.1.1.4 ! root 85: #endif /* _STDDEF_H or __need_ptrdiff_t. */
! 86:
1.1 root 87: /* Unsigned type of `sizeof' something. */
88:
1.1.1.4 ! root 89: /* Define this type if we are doing the whole job,
! 90: or if we want this type in particular. */
! 91: #if defined (_STDDEF_H) || defined (__need_size_t)
1.1 root 92: #ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
1.1.1.2 root 93: #ifndef _T_SIZE_
1.1 root 94: #ifndef _T_SIZE
95: #ifndef __SIZE_T
96: #ifndef _SIZE_T_
97: #ifndef ___int_size_t_h
1.1.1.2 root 98: #ifndef _GCC_SIZE_T
1.1.1.3 root 99: #ifndef _SIZET_
1.1 root 100: #define _SIZE_T
1.1.1.2 root 101: #define _T_SIZE_
1.1 root 102: #define _T_SIZE
103: #define __SIZE_T
104: #define _SIZE_T_
105: #define ___int_size_t_h
1.1.1.2 root 106: #define _GCC_SIZE_T
1.1.1.3 root 107: #define _SIZET_
1.1 root 108: #ifndef __SIZE_TYPE__
109: #define __SIZE_TYPE__ long unsigned int
110: #endif
111: typedef __SIZE_TYPE__ size_t;
1.1.1.3 root 112: #endif /* _SIZET_ */
1.1.1.2 root 113: #endif /* _GCC_SIZE_T */
1.1 root 114: #endif /* ___int_size_t_h */
115: #endif /* _SIZE_T_ */
116: #endif /* __SIZE_T */
117: #endif /* _T_SIZE */
1.1.1.2 root 118: #endif /* _T_SIZE_ */
1.1 root 119: #endif /* _SIZE_T */
1.1.1.3 root 120: #undef __need_size_t
1.1.1.4 ! root 121: #endif /* _STDDEF_H or __need_size_t. */
1.1 root 122:
1.1.1.3 root 123:
124: /* Wide character type.
125: Locale-writers should change this as necessary to
126: be big enough to hold unique values not between 0 and 127,
127: and not (wchar_t) -1, for each defined multibyte character. */
1.1 root 128:
1.1.1.4 ! root 129: /* Define this type if we are doing the whole job,
! 130: or if we want this type in particular. */
! 131: #if defined (_STDDEF_H) || defined (__need_wchar_t)
1.1 root 132: #ifndef _WCHAR_T
133: #ifndef _T_WCHAR_
134: #ifndef _T_WCHAR
135: #ifndef __WCHAR_T
136: #ifndef _WCHAR_T_
137: #ifndef ___int_wchar_t_h
1.1.1.2 root 138: #ifndef _GCC_WCHAR_T
1.1 root 139: #define _WCHAR_T
140: #define _T_WCHAR_
141: #define _T_WCHAR
142: #define __WCHAR_T
143: #define _WCHAR_T_
144: #define ___int_wchar_t_h
1.1.1.2 root 145: #define _GCC_WCHAR_T
1.1 root 146: #ifndef __WCHAR_TYPE__
147: #define __WCHAR_TYPE__ int
148: #endif
1.1.1.4 ! root 149: #ifdef __GNUG__
! 150: /* In C++, wchar_t is a distinct basic type,
! 151: and we can expect __wchar_t to be defined by cc1plus. */
! 152: typedef __wchar_t wchar_t;
! 153: #else
! 154: /* In C, cpp tells us which type to make an alias for. */
1.1 root 155: typedef __WCHAR_TYPE__ wchar_t;
1.1.1.4 ! root 156: #endif
1.1 root 157: #endif
158: #endif
159: #endif
160: #endif
161: #endif
162: #endif
1.1.1.2 root 163: #endif
1.1.1.3 root 164: #undef __need_wchar_t
1.1.1.4 ! root 165: #endif /* _STDDEF_H or __need_wchar_t. */
! 166:
! 167: /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
! 168: are already defined. We need not worry about the case of wanting just
! 169: one of these types, not on 4.3bsd-net2, because only the GNU libc
! 170: header files do that. */
! 171: #ifdef _ANSI_H_
! 172: #undef _PTRDIFF_T_
! 173: #ifdef _STDDEF_H /* This is a kludge.
! 174: _STDDEF_H is defined when we are using the whole file,
! 175: undefined when obstack.h wants just ptrdiff_t. */
! 176: #undef _SIZE_T_
! 177: #undef _WCHAR_T_
! 178: #endif
! 179: #endif
1.1 root 180:
181: #endif /* __sys_stdtypes_h */
182:
183: /* A null pointer constant. */
184:
1.1.1.3 root 185: #if defined (_STDDEF_H) || defined (__need_NULL)
1.1 root 186: #undef NULL /* in case <stdio.h> has defined it. */
187: #define NULL ((void *)0)
1.1.1.3 root 188: #endif /* NULL not defined and <stddef.h> or need NULL. */
189: #undef __need_NULL
190:
191: #ifdef _STDDEF_H
1.1 root 192:
193: /* Offset of member MEMBER in a struct of type TYPE. */
194:
195: #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
196:
1.1.1.3 root 197: #endif /* _STDDEF_H was defined this time */
1.1.1.4 ! root 198:
! 199: #endif /* _ANSI_STDDEF_H was not defined before */
1.1.1.3 root 200: #endif /* _STDDEF_H_ was not defined before */
201: #endif /* _STDDEF_H was not defined before */
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