xref: /netbsd/lib/libc/time/private.h (revision bf9ec67e)
1 /*	$NetBSD: private.h,v 1.22 2002/05/26 11:49:58 wiz Exp $	*/
2 
3 #ifndef PRIVATE_H
4 #define PRIVATE_H
5 
6 /* NetBSD defaults */
7 #define TM_GMTOFF	tm_gmtoff
8 #define TM_ZONE		tm_zone
9 #define STD_INSPIRED	1
10 #define HAVE_LONG_DOUBLE 1
11 
12 /* For when we build zic as a host tool. */
13 #ifdef HAVE_CONFIG_H
14 #include "config.h"
15 #endif
16 
17 /*
18 ** This file is in the public domain, so clarified as of
19 ** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
20 */
21 
22 /*
23 ** This header is for use ONLY with the time conversion code.
24 ** There is no guarantee that it will remain unchanged,
25 ** or that it will remain at all.
26 ** Do NOT copy it to any system include directory.
27 ** Thank you!
28 */
29 
30 /*
31 ** ID
32 */
33 
34 #ifndef lint
35 #ifndef NOID
36 #if 0
37 static char	privatehid[] = "@(#)private.h	7.52";
38 #endif
39 #endif /* !defined NOID */
40 #endif /* !defined lint */
41 
42 /*
43 ** Defaults for preprocessor symbols.
44 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
45 */
46 
47 #ifndef HAVE_ADJTIME
48 #define HAVE_ADJTIME		1
49 #endif /* !defined HAVE_ADJTIME */
50 
51 #ifndef HAVE_GETTEXT
52 #define HAVE_GETTEXT		0
53 #endif /* !defined HAVE_GETTEXT */
54 
55 #ifndef HAVE_INCOMPATIBLE_CTIME_R
56 #define HAVE_INCOMPATIBLE_CTIME_R	0
57 #endif /* !defined INCOMPATIBLE_CTIME_R */
58 
59 #ifndef HAVE_SETTIMEOFDAY
60 #define HAVE_SETTIMEOFDAY	3
61 #endif /* !defined HAVE_SETTIMEOFDAY */
62 
63 #ifndef HAVE_STRERROR
64 #define HAVE_STRERROR		1
65 #endif /* !defined HAVE_STRERROR */
66 
67 #ifndef HAVE_SYMLINK
68 #define HAVE_SYMLINK		1
69 #endif /* !defined HAVE_SYMLINK */
70 
71 #ifndef HAVE_SYS_STAT_H
72 #define HAVE_SYS_STAT_H		1
73 #endif /* !defined HAVE_SYS_STAT_H */
74 
75 #ifndef HAVE_SYS_WAIT_H
76 #define HAVE_SYS_WAIT_H		1
77 #endif /* !defined HAVE_SYS_WAIT_H */
78 
79 #ifndef HAVE_UNISTD_H
80 #define HAVE_UNISTD_H		1
81 #endif /* !defined HAVE_UNISTD_H */
82 
83 #ifndef HAVE_UTMPX_H
84 #define HAVE_UTMPX_H		0
85 #endif /* !defined HAVE_UTMPX_H */
86 
87 #ifdef LOCALE_HOME
88 #undef LOCALE_HOME		/* not to be handled by tzcode itself */
89 #endif /* defined LOCALE_HOME */
90 
91 #if HAVE_INCOMPATIBLE_CTIME_R
92 #define asctime_r _incompatible_asctime_r
93 #define ctime_r _incompatible_ctime_r
94 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
95 
96 /*
97 ** Nested includes
98 */
99 
100 #include "sys/types.h"	/* for time_t */
101 #include "stdio.h"
102 #include "errno.h"
103 #include "string.h"
104 #include "limits.h"	/* for CHAR_BIT */
105 #include "time.h"
106 #include "stdlib.h"
107 
108 #if HAVE_GETTEXT - 0
109 #include "libintl.h"
110 #endif /* HAVE_GETTEXT - 0 */
111 
112 #if HAVE_SYS_WAIT_H - 0
113 #include <sys/wait.h>	/* for WIFEXITED and WEXITSTATUS */
114 #endif /* HAVE_SYS_WAIT_H - 0 */
115 
116 #ifndef WIFEXITED
117 #define WIFEXITED(status)	(((status) & 0xff) == 0)
118 #endif /* !defined WIFEXITED */
119 #ifndef WEXITSTATUS
120 #define WEXITSTATUS(status)	(((status) >> 8) & 0xff)
121 #endif /* !defined WEXITSTATUS */
122 
123 #if HAVE_UNISTD_H - 0
124 #include "unistd.h"	/* for F_OK and R_OK */
125 #endif /* HAVE_UNISTD_H - 0 */
126 
127 #if !(HAVE_UNISTD_H - 0)
128 #ifndef F_OK
129 #define F_OK	0
130 #endif /* !defined F_OK */
131 #ifndef R_OK
132 #define R_OK	4
133 #endif /* !defined R_OK */
134 #endif /* !(HAVE_UNISTD_H - 0) */
135 
136 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX.  */
137 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
138 
139 /*
140 ** Workarounds for compilers/systems.
141 */
142 
143 /*
144 ** SunOS 4.1.1 cc lacks prototypes.
145 */
146 
147 #ifndef P
148 #define P(x)	x
149 #endif /* !defined P */
150 
151 /*
152 ** SunOS 4.1.1 headers lack EXIT_SUCCESS.
153 */
154 
155 #ifndef EXIT_SUCCESS
156 #define EXIT_SUCCESS	0
157 #endif /* !defined EXIT_SUCCESS */
158 
159 /*
160 ** SunOS 4.1.1 headers lack EXIT_FAILURE.
161 */
162 
163 #ifndef EXIT_FAILURE
164 #define EXIT_FAILURE	1
165 #endif /* !defined EXIT_FAILURE */
166 
167 /*
168 ** SunOS 4.1.1 headers lack FILENAME_MAX.
169 */
170 
171 #ifndef FILENAME_MAX
172 
173 #ifndef MAXPATHLEN
174 #ifdef unix
175 #include "sys/param.h"
176 #endif /* defined unix */
177 #endif /* !defined MAXPATHLEN */
178 
179 #ifdef MAXPATHLEN
180 #define FILENAME_MAX	MAXPATHLEN
181 #endif /* defined MAXPATHLEN */
182 #ifndef MAXPATHLEN
183 #define FILENAME_MAX	1024		/* Pure guesswork */
184 #endif /* !defined MAXPATHLEN */
185 
186 #endif /* !defined FILENAME_MAX */
187 
188 /*
189 ** SunOS 4.1.1 libraries lack remove.
190 */
191 
192 #ifndef __NetBSD__
193 #ifndef remove
194 extern int	unlink P((const char * filename));
195 #define remove	unlink
196 #endif /* !defined remove */
197 #endif
198 
199 /*
200 ** Some ancient errno.h implementations don't declare errno.
201 ** But some newer errno.h implementations define it as a macro.
202 ** Fix the former without affecting the latter.
203 */
204 #ifndef errno
205 extern int errno;
206 #endif /* !defined errno */
207 
208 /*
209 ** Private function declarations.
210 */
211 char *	icalloc P((int nelem, int elsize));
212 char *	icatalloc P((char * old, const char * new));
213 char *	icpyalloc P((const char * string));
214 char *	imalloc P((int n));
215 void *	irealloc P((void * pointer, int size));
216 void	icfree P((char * pointer));
217 void	ifree P((char * pointer));
218 char *	scheck P((const char *string, const char *format))
219 	__attribute__((__format_arg__(2)));
220 
221 
222 /*
223 ** Finally, some convenience items.
224 */
225 
226 #ifndef TRUE
227 #define TRUE	1
228 #endif /* !defined TRUE */
229 
230 #ifndef FALSE
231 #define FALSE	0
232 #endif /* !defined FALSE */
233 
234 #ifndef TYPE_BIT
235 #define TYPE_BIT(type)	(sizeof (type) * CHAR_BIT)
236 #endif /* !defined TYPE_BIT */
237 
238 #ifndef TYPE_SIGNED
239 #define TYPE_SIGNED(type) (((type) -1) < 0)
240 #endif /* !defined TYPE_SIGNED */
241 
242 #ifndef INT_STRLEN_MAXIMUM
243 /*
244 ** 302 / 1000 is log10(2.0) rounded up.
245 ** Subtract one for the sign bit if the type is signed;
246 ** add one for integer division truncation;
247 ** add one more for a minus sign if the type is signed.
248 */
249 #define INT_STRLEN_MAXIMUM(type) \
250     ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + 1 + TYPE_SIGNED(type))
251 #endif /* !defined INT_STRLEN_MAXIMUM */
252 
253 /*
254 ** INITIALIZE(x)
255 */
256 
257 #ifndef GNUC_or_lint
258 #ifdef lint
259 #define GNUC_or_lint
260 #endif /* defined lint */
261 #ifndef lint
262 #ifdef __GNUC__
263 #define GNUC_or_lint
264 #endif /* defined __GNUC__ */
265 #endif /* !defined lint */
266 #endif /* !defined GNUC_or_lint */
267 
268 #ifndef INITIALIZE
269 #ifdef GNUC_or_lint
270 #define INITIALIZE(x)	((x) = 0)
271 #endif /* defined GNUC_or_lint */
272 #ifndef GNUC_or_lint
273 #define INITIALIZE(x)
274 #endif /* !defined GNUC_or_lint */
275 #endif /* !defined INITIALIZE */
276 
277 /*
278 ** For the benefit of GNU folk...
279 ** `_(MSGID)' uses the current locale's message library string for MSGID.
280 ** The default is to use gettext if available, and use MSGID otherwise.
281 */
282 
283 #ifndef _
284 #if HAVE_GETTEXT - 0
285 #define _(msgid) gettext(msgid)
286 #else /* !(HAVE_GETTEXT - 0) */
287 #define _(msgid) msgid
288 #endif /* !(HAVE_GETTEXT - 0) */
289 #endif /* !defined _ */
290 
291 #ifndef TZ_DOMAIN
292 #define TZ_DOMAIN "tz"
293 #endif /* !defined TZ_DOMAIN */
294 
295 #if HAVE_INCOMPATIBLE_CTIME_R
296 #undef asctime_r
297 #undef ctime_r
298 char *asctime_r P((struct tm const *, char *));
299 char *ctime_r P((time_t const *, char *));
300 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
301 
302 /*
303 ** UNIX was a registered trademark of UNIX System Laboratories in 1993.
304 */
305 
306 #endif /* !defined PRIVATE_H */
307