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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
1.1.1.5 ! root 38: /* Undef _FOO_T_ if we are supposed to define foo_t. */
! 39: #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
1.1.1.4 root 40: #undef _PTRDIFF_T_
1.1.1.5 ! root 41: #endif
! 42: #if defined (__need_size_t) || defined (_STDDEF_H_)
1.1.1.4 root 43: #undef _SIZE_T_
1.1.1.5 ! root 44: #endif
! 45: #if defined (__need_wchar_t) || defined (_STDDEF_H_)
1.1.1.4 root 46: #undef _WCHAR_T_
47: #endif
48: #endif /* _ANSI_H_ */
49:
1.1.1.5 ! root 50: /* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
! 51: Just ignore it. */
! 52: #if defined (__sequent__) && defined (_PTRDIFF_T_)
! 53: #undef _PTRDIFF_T_
! 54: #endif
! 55:
1.1 root 56: /* In case nobody has defined these types, but we aren't running under
57: GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
58: __WCHAR_TYPE__ have reasonable values. This can happen if the
59: parts of GCC is compiled by an older compiler, that actually
60: include gstddef.h, such as collect2. */
61:
62: /* Signed type of difference of two pointers. */
63:
1.1.1.4 root 64: /* Define this type if we are doing the whole job,
65: or if we want this type in particular. */
66: #if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
1.1 root 67: #ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */
1.1.1.2 root 68: #ifndef _T_PTRDIFF_
1.1 root 69: #ifndef _T_PTRDIFF
70: #ifndef __PTRDIFF_T
71: #ifndef _PTRDIFF_T_
72: #ifndef ___int_ptrdiff_t_h
1.1.1.2 root 73: #ifndef _GCC_PTRDIFF_T
1.1 root 74: #define _PTRDIFF_T
1.1.1.2 root 75: #define _T_PTRDIFF_
1.1 root 76: #define _T_PTRDIFF
77: #define __PTRDIFF_T
78: #define _PTRDIFF_T_
79: #define ___int_ptrdiff_t_h
1.1.1.2 root 80: #define _GCC_PTRDIFF_T
1.1 root 81: #ifndef __PTRDIFF_TYPE__
82: #define __PTRDIFF_TYPE__ long int
83: #endif
84: typedef __PTRDIFF_TYPE__ ptrdiff_t;
1.1.1.2 root 85: #endif /* _GCC_PTRDIFF_T */
1.1 root 86: #endif /* ___int_ptrdiff_t_h */
87: #endif /* _PTRDIFF_T_ */
88: #endif /* __PTRDIFF_T */
89: #endif /* _T_PTRDIFF */
1.1.1.2 root 90: #endif /* _T_PTRDIFF_ */
1.1 root 91: #endif /* _PTRDIFF_T */
92:
1.1.1.3 root 93: /* If this symbol has done its job, get rid of it. */
94: #undef __need_ptrdiff_t
95:
1.1.1.4 root 96: #endif /* _STDDEF_H or __need_ptrdiff_t. */
97:
1.1 root 98: /* Unsigned type of `sizeof' something. */
99:
1.1.1.4 root 100: /* Define this type if we are doing the whole job,
101: or if we want this type in particular. */
102: #if defined (_STDDEF_H) || defined (__need_size_t)
1.1 root 103: #ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
1.1.1.5 ! root 104: #ifndef _SYS_SIZE_T_H
1.1.1.2 root 105: #ifndef _T_SIZE_
1.1 root 106: #ifndef _T_SIZE
107: #ifndef __SIZE_T
108: #ifndef _SIZE_T_
109: #ifndef ___int_size_t_h
1.1.1.2 root 110: #ifndef _GCC_SIZE_T
1.1.1.3 root 111: #ifndef _SIZET_
1.1 root 112: #define _SIZE_T
1.1.1.5 ! root 113: #define _SYS_SIZE_T_H
1.1.1.2 root 114: #define _T_SIZE_
1.1 root 115: #define _T_SIZE
116: #define __SIZE_T
117: #define _SIZE_T_
118: #define ___int_size_t_h
1.1.1.2 root 119: #define _GCC_SIZE_T
1.1.1.3 root 120: #define _SIZET_
1.1 root 121: #ifndef __SIZE_TYPE__
122: #define __SIZE_TYPE__ long unsigned int
123: #endif
1.1.1.5 ! root 124: #if !(defined (__GNUG__) && defined (size_t))
1.1 root 125: typedef __SIZE_TYPE__ size_t;
1.1.1.5 ! root 126: #endif /* !(defined (__GNUG__) && defined (size_t)) */
1.1.1.3 root 127: #endif /* _SIZET_ */
1.1.1.2 root 128: #endif /* _GCC_SIZE_T */
1.1 root 129: #endif /* ___int_size_t_h */
130: #endif /* _SIZE_T_ */
131: #endif /* __SIZE_T */
132: #endif /* _T_SIZE */
1.1.1.2 root 133: #endif /* _T_SIZE_ */
1.1.1.5 ! root 134: #endif /* _SYS_SIZE_T_H */
1.1 root 135: #endif /* _SIZE_T */
1.1.1.3 root 136: #undef __need_size_t
1.1.1.4 root 137: #endif /* _STDDEF_H or __need_size_t. */
1.1 root 138:
1.1.1.3 root 139:
140: /* Wide character type.
141: Locale-writers should change this as necessary to
142: be big enough to hold unique values not between 0 and 127,
143: and not (wchar_t) -1, for each defined multibyte character. */
1.1 root 144:
1.1.1.4 root 145: /* Define this type if we are doing the whole job,
146: or if we want this type in particular. */
147: #if defined (_STDDEF_H) || defined (__need_wchar_t)
1.1 root 148: #ifndef _WCHAR_T
149: #ifndef _T_WCHAR_
150: #ifndef _T_WCHAR
151: #ifndef __WCHAR_T
152: #ifndef _WCHAR_T_
153: #ifndef ___int_wchar_t_h
1.1.1.2 root 154: #ifndef _GCC_WCHAR_T
1.1 root 155: #define _WCHAR_T
156: #define _T_WCHAR_
157: #define _T_WCHAR
158: #define __WCHAR_T
159: #define _WCHAR_T_
160: #define ___int_wchar_t_h
1.1.1.2 root 161: #define _GCC_WCHAR_T
1.1 root 162: #ifndef __WCHAR_TYPE__
163: #define __WCHAR_TYPE__ int
164: #endif
1.1.1.4 root 165: #ifdef __GNUG__
166: /* In C++, wchar_t is a distinct basic type,
167: and we can expect __wchar_t to be defined by cc1plus. */
168: typedef __wchar_t wchar_t;
169: #else
170: /* In C, cpp tells us which type to make an alias for. */
1.1 root 171: typedef __WCHAR_TYPE__ wchar_t;
1.1.1.4 root 172: #endif
1.1 root 173: #endif
174: #endif
175: #endif
176: #endif
177: #endif
178: #endif
1.1.1.2 root 179: #endif
1.1.1.3 root 180: #undef __need_wchar_t
1.1.1.4 root 181: #endif /* _STDDEF_H or __need_wchar_t. */
182:
183: /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
1.1.1.5 ! root 184: are already defined. */
1.1.1.4 root 185: #ifdef _ANSI_H_
1.1.1.5 ! root 186: #ifdef _GCC_PTRDIFF_T_
1.1.1.4 root 187: #undef _PTRDIFF_T_
1.1.1.5 ! root 188: #endif
! 189: #ifdef _GCC_SIZE_T_
1.1.1.4 root 190: #undef _SIZE_T_
191: #endif
1.1.1.5 ! root 192: #ifdef _GCC_WCHAR_T_
! 193: #undef _WCHAR_T_
1.1.1.4 root 194: #endif
1.1.1.5 ! root 195: #endif /* _ANSI_H_ */
1.1 root 196:
197: #endif /* __sys_stdtypes_h */
198:
199: /* A null pointer constant. */
200:
1.1.1.3 root 201: #if defined (_STDDEF_H) || defined (__need_NULL)
1.1 root 202: #undef NULL /* in case <stdio.h> has defined it. */
203: #define NULL ((void *)0)
1.1.1.3 root 204: #endif /* NULL not defined and <stddef.h> or need NULL. */
205: #undef __need_NULL
206:
207: #ifdef _STDDEF_H
1.1 root 208:
209: /* Offset of member MEMBER in a struct of type TYPE. */
210:
211: #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
212:
1.1.1.3 root 213: #endif /* _STDDEF_H was defined this time */
1.1.1.4 root 214:
215: #endif /* _ANSI_STDDEF_H was not defined before */
1.1.1.3 root 216: #endif /* _STDDEF_H_ was not defined before */
217: #endif /* _STDDEF_H was not defined before */
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