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1.1 root 1: #ifndef _STDDEF_H
2: #ifndef _STDDEF_H_
3: #ifndef _ANSI_STDDEF_H
4: #ifndef __STDDEF_H__
5:
6: /* Any one of these symbols __need_* means that GNU libc
7: wants us just to define one data type. So don't define
8: the symbols that indicate this file's entire job has been done. */
9: #if (!defined(__need_wchar_t) && !defined(__need_size_t) \
10: && !defined(__need_ptrdiff_t) && !defined(__need_NULL))
11: #define _STDDEF_H
12: #define _STDDEF_H_
13: /* [email protected] says the NeXT needs this. */
14: #define _ANSI_STDDEF_H
15: /* Irix 5.1 needs this. */
16: #define __STDDEF_H__
17: #endif
18:
19: #ifndef __sys_stdtypes_h
20: /* This avoids lossage on SunOS but only if stdtypes.h comes first.
21: There's no way to win with the other order! Sun lossage. */
22:
23: /* On 4.3bsd-net2, make sure ansi.h is included, so we have
24: one less case to deal with in the following. */
25: #if defined (__BSD_NET2__) || defined (____386BSD____) || defined (__FreeBSD__) || defined(__NetBSD__)
26: #include <machine/ansi.h>
27: #endif
28:
29: /* In 4.3bsd-net2, machine/ansi.h defines these symbols, which are
30: defined if the corresponding type is *not* defined. */
31: #ifdef _ANSI_H_
32: #if !defined(_SIZE_T_) && !defined(_BSD_SIZE_T_)
33: #define _SIZE_T
34: #endif
35: #if !defined(_PTRDIFF_T_) && !defined(_BSD_PTRDIFF_T_)
36: #define _PTRDIFF_T
37: #endif
38: /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
39: instead of _WCHAR_T_. */
40: #if !defined(_WCHAR_T_) && !defined(_BSD_WCHAR_T_)
41: #ifndef _BSD_WCHAR_T_
42: #define _WCHAR_T
43: #endif
44: #endif
45: /* Undef _FOO_T_ if we are supposed to define foo_t. */
46: #if defined (__need_ptrdiff_t) || defined (_STDDEF_H_)
47: #undef _PTRDIFF_T_
48: #undef _BSD_PTRDIFF_T_
49: #endif
50: #if defined (__need_size_t) || defined (_STDDEF_H_)
51: #undef _SIZE_T_
52: #undef _BSD_SIZE_T_
53: #endif
54: #if defined (__need_wchar_t) || defined (_STDDEF_H_)
55: #undef _WCHAR_T_
56: #undef _BSD_WCHAR_T_
57: #endif
58: #endif /* _ANSI_H_ */
59:
60: /* Sequent's header files use _PTRDIFF_T_ in some conflicting way.
61: Just ignore it. */
62: #if defined (__sequent__) && defined (_PTRDIFF_T_)
63: #undef _PTRDIFF_T_
64: #endif
65:
66: /* In case nobody has defined these types, but we aren't running under
67: GCC 2.00, make sure that __PTRDIFF_TYPE__, __SIZE__TYPE__, and
68: __WCHAR_TYPE__ have reasonable values. This can happen if the
69: parts of GCC is compiled by an older compiler, that actually
70: include gstddef.h, such as collect2. */
71:
72: /* Signed type of difference of two pointers. */
73:
74: /* Define this type if we are doing the whole job,
75: or if we want this type in particular. */
76: #if defined (_STDDEF_H) || defined (__need_ptrdiff_t)
77: #ifndef _PTRDIFF_T /* in case <sys/types.h> has defined it. */
78: #ifndef _T_PTRDIFF_
79: #ifndef _T_PTRDIFF
80: #ifndef __PTRDIFF_T
81: #ifndef _PTRDIFF_T_
82: #ifndef _BSD_PTRDIFF_T_
83: #ifndef ___int_ptrdiff_t_h
84: #ifndef _GCC_PTRDIFF_T
85: #define _PTRDIFF_T
86: #define _T_PTRDIFF_
87: #define _T_PTRDIFF
88: #define __PTRDIFF_T
89: #define _PTRDIFF_T_
90: #define _BSD_PTRDIFF_T_
91: #define ___int_ptrdiff_t_h
92: #define _GCC_PTRDIFF_T
93: #ifndef __PTRDIFF_TYPE__
94: #define __PTRDIFF_TYPE__ long int
95: #endif
96: typedef __PTRDIFF_TYPE__ ptrdiff_t;
97: #endif /* _GCC_PTRDIFF_T */
98: #endif /* ___int_ptrdiff_t_h */
99: #endif /* _BSD_PTRDIFF_T_ */
100: #endif /* _PTRDIFF_T_ */
101: #endif /* __PTRDIFF_T */
102: #endif /* _T_PTRDIFF */
103: #endif /* _T_PTRDIFF_ */
104: #endif /* _PTRDIFF_T */
105:
106: /* If this symbol has done its job, get rid of it. */
107: #undef __need_ptrdiff_t
108:
109: #endif /* _STDDEF_H or __need_ptrdiff_t. */
110:
111: /* Unsigned type of `sizeof' something. */
112:
113: /* Define this type if we are doing the whole job,
114: or if we want this type in particular. */
115: #if defined (_STDDEF_H) || defined (__need_size_t)
116: #ifndef _SIZE_T /* in case <sys/types.h> has defined it. */
117: #ifndef _SYS_SIZE_T_H
118: #ifndef _T_SIZE_
119: #ifndef _T_SIZE
120: #ifndef __SIZE_T
121: #ifndef _SIZE_T_
122: #ifndef _BSD_SIZE_T_
123: #ifndef _SIZE_T_DEFINED_
124: #ifndef ___int_size_t_h
125: #ifndef _GCC_SIZE_T
126: #ifndef _SIZET_
127: #ifndef __size_t
128: #define _SIZE_T
129: #define _SYS_SIZE_T_H
130: #define _T_SIZE_
131: #define _T_SIZE
132: #define __SIZE_T
133: #define _SIZE_T_
134: #define _BSD_SIZE_T_
135: #define _SIZE_T_DEFINED_
136: #define ___int_size_t_h
137: #define _GCC_SIZE_T
138: #define _SIZET_
139: #define __size_t
140: #ifndef __SIZE_TYPE__
141: #define __SIZE_TYPE__ long unsigned int
142: #endif
143: #if !(defined (__GNUG__) && defined (size_t))
144: typedef __SIZE_TYPE__ size_t;
145: #endif /* !(defined (__GNUG__) && defined (size_t)) */
146: #endif /* __size_t */
147: #endif /* _SIZET_ */
148: #endif /* _GCC_SIZE_T */
149: #endif /* ___int_size_t_h */
150: #endif /* _SIZE_T_DEFINED_ */
151: #endif /* _BSD_SIZE_T_ */
152: #endif /* _SIZE_T_ */
153: #endif /* __SIZE_T */
154: #endif /* _T_SIZE */
155: #endif /* _T_SIZE_ */
156: #endif /* _SYS_SIZE_T_H */
157: #endif /* _SIZE_T */
158: #undef __need_size_t
159: #endif /* _STDDEF_H or __need_size_t. */
160:
161:
162: /* Wide character type.
163: Locale-writers should change this as necessary to
164: be big enough to hold unique values not between 0 and 127,
165: and not (wchar_t) -1, for each defined multibyte character. */
166:
167: /* Define this type if we are doing the whole job,
168: or if we want this type in particular. */
169: #if defined (_STDDEF_H) || defined (__need_wchar_t)
170: #ifndef _WCHAR_T
171: #ifndef _T_WCHAR_
172: #ifndef _T_WCHAR
173: #ifndef __WCHAR_T
174: #ifndef _WCHAR_T_
175: #ifndef _BSD_WCHAR_T_
176: #ifndef _WCHAR_T_DEFINED_
177: #ifndef _WCHAR_T_H
178: #ifndef ___int_wchar_t_h
179: #ifndef __INT_WCHAR_T_H
180: #ifndef _GCC_WCHAR_T
181: #define _WCHAR_T
182: #define _T_WCHAR_
183: #define _T_WCHAR
184: #define __WCHAR_T
185: #define _WCHAR_T_
186: #define _BSD_WCHAR_T_
187: #define _WCHAR_T_DEFINED_
188: #define _WCHAR_T_H
189: #define ___int_wchar_t_h
190: #define __INT_WCHAR_T_H
191: #define _GCC_WCHAR_T
192:
193: /* On BSD/386 1.1, at least, machine/ansi.h defines _BSD_WCHAR_T_
194: instead of _WCHAR_T_, and _BSD_RUNE_T_ (which, unlike the other
195: symbols in the _FOO_T_ family, stays defined even after its
196: corresponding type is defined). If we define wchar_t, then we
197: must undef _WCHAR_T_; for BSD/386 1.1 (and perhaps others), if
198: we undef _WCHAR_T_, then we must also define rune_t, since
199: headers like runetype.h assume that if machine/ansi.h is included,
200: and _BSD_WCHAR_T_ is not defined, then rune_t is available.
201: machine/ansi.h says, "Note that _WCHAR_T_ and _RUNE_T_ must be of
202: the same type." */
203: #ifdef _BSD_WCHAR_T_
204: #undef _BSD_WCHAR_T_
205: #ifdef _BSD_RUNE_T_
206: #if !defined (_ANSI_SOURCE) && !defined (_POSIX_SOURCE)
207: typedef _BSD_RUNE_T_ rune_t;
208: #endif
209: #endif
210: #endif
211:
212: #ifndef __WCHAR_TYPE__
213: #define __WCHAR_TYPE__ int
214: #endif
215: typedef __WCHAR_TYPE__ wchar_t;
216: #endif
217: #endif
218: #endif
219: #endif
220: #endif
221: #endif
222: #endif
223: #endif
224: #endif
225: #endif
226: #endif
227: #undef __need_wchar_t
228: #endif /* _STDDEF_H or __need_wchar_t. */
229:
230: /* In 4.3bsd-net2, leave these undefined to indicate that size_t, etc.
231: are already defined. */
232: #ifdef _ANSI_H_
233: /* The references to _GCC_PTRDIFF_T_, _GCC_SIZE_T_, and _GCC_WCHAR_T_
234: are probably typos and should be removed before 2.7 is released. */
235: #ifdef _GCC_PTRDIFF_T_
236: #undef _PTRDIFF_T_
237: #undef _BSD_PTRDIFF_T_
238: #endif
239: #ifdef _GCC_SIZE_T_
240: #undef _SIZE_T_
241: #undef _BSD_SIZE_T_
242: #endif
243: #ifdef _GCC_WCHAR_T_
244: #undef _WCHAR_T_
245: #undef _BSD_WCHAR_T_
246: #endif
247: /* The following ones are the real ones. */
248: #ifdef _GCC_PTRDIFF_T
249: #undef _PTRDIFF_T_
250: #endif
251: #ifdef _GCC_SIZE_T
252: #undef _SIZE_T_
253: #endif
254: #ifdef _GCC_WCHAR_T
255: #undef _WCHAR_T_
256: #endif
257: #endif /* _ANSI_H_ */
258:
259: #endif /* __sys_stdtypes_h */
260:
261: /* A null pointer constant. */
262:
263: #if defined (_STDDEF_H) || defined (__need_NULL)
264: #undef NULL /* in case <stdio.h> has defined it. */
265: #define NULL ((void *)0)
266: #endif /* NULL not defined and <stddef.h> or need NULL. */
267: #undef __need_NULL
268:
269: #ifdef _STDDEF_H
270:
271: /* Offset of member MEMBER in a struct of type TYPE. */
272:
273: #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
274:
275: #endif /* _STDDEF_H was defined this time */
276:
277: #endif /* __STDDEF_H__ was not defined before */
278: #endif /* _ANSI_STDDEF_H was not defined before */
279: #endif /* _STDDEF_H_ was not defined before */
280: #endif /* _STDDEF_H was not defined before */
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