lib/libc/time/private.h

   1 /*      $NetBSD: private.h,v 1.24 2003/12/20 00:12:05 kleink 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 #if HAVE_NBTOOL_CONFIG_H
  14 #include "nbtool_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.
  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   8.6";
  38 #endif
  39 #endif /* !defined NOID */
  40 #endif /* !defined lint */
  41
  42 #define GRANDPARENTED   "Local time zone must be set--see zic manual page"
  43
  44 /*
  45 ** Defaults for preprocessor symbols.
  46 ** You can override these in your C compiler options, e.g. `-DHAVE_ADJTIME=0'.
  47 */
  48
  49 #ifndef HAVE_ADJTIME
  50 #define HAVE_ADJTIME            1
  51 #endif /* !defined HAVE_ADJTIME */
  52
  53 #ifndef HAVE_GETTEXT
  54 #define HAVE_GETTEXT            0
  55 #endif /* !defined HAVE_GETTEXT */
  56
  57 #ifndef HAVE_INCOMPATIBLE_CTIME_R
  58 #define HAVE_INCOMPATIBLE_CTIME_R       0
  59 #endif /* !defined INCOMPATIBLE_CTIME_R */
  60
  61 #ifndef HAVE_SETTIMEOFDAY
  62 #define HAVE_SETTIMEOFDAY       3
  63 #endif /* !defined HAVE_SETTIMEOFDAY */
  64
  65 #ifndef HAVE_SYMLINK
  66 #define HAVE_SYMLINK            1
  67 #endif /* !defined HAVE_SYMLINK */
  68
  69 #ifndef HAVE_SYS_STAT_H
  70 #define HAVE_SYS_STAT_H         1
  71 #endif /* !defined HAVE_SYS_STAT_H */
  72
  73 #ifndef HAVE_SYS_WAIT_H
  74 #define HAVE_SYS_WAIT_H         1
  75 #endif /* !defined HAVE_SYS_WAIT_H */
  76
  77 #ifndef HAVE_UNISTD_H
  78 #define HAVE_UNISTD_H           1
  79 #endif /* !defined HAVE_UNISTD_H */
  80
  81 #ifndef HAVE_UTMPX_H
  82 #define HAVE_UTMPX_H            0
  83 #endif /* !defined HAVE_UTMPX_H */
  84
  85 #ifdef LOCALE_HOME
  86 #undef LOCALE_HOME              /* not to be handled by tzcode itself */
  87 #endif /* defined LOCALE_HOME */
  88
  89 #if HAVE_INCOMPATIBLE_CTIME_R
  90 #define asctime_r _incompatible_asctime_r
  91 #define ctime_r _incompatible_ctime_r
  92 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
  93
  94 /*
  95 ** Nested includes
  96 */
  97
  98 #include "sys/types.h"  /* for time_t */
  99 #include "stdio.h"
 100 #include "errno.h"
 101 #include "string.h"
 102 #include "limits.h"     /* for CHAR_BIT et al. */
 103 #include "time.h"
 104 #include "stdlib.h"
 105
 106 #if HAVE_GETTEXT
 107 #include "libintl.h"
 108 #endif /* HAVE_GETTEXT */
 109
 110 #if HAVE_SYS_WAIT_H
 111 #include <sys/wait.h>   /* for WIFEXITED and WEXITSTATUS */
 112 #endif /* HAVE_SYS_WAIT_H */
 113
 114 #ifndef WIFEXITED
 115 #define WIFEXITED(status)       (((status) & 0xff) == 0)
 116 #endif /* !defined WIFEXITED */
 117 #ifndef WEXITSTATUS
 118 #define WEXITSTATUS(status)     (((status) >> 8) & 0xff)
 119 #endif /* !defined WEXITSTATUS */
 120
 121 #if HAVE_UNISTD_H
 122 #include "unistd.h"     /* for F_OK, R_OK, and other POSIX goodness */
 123 #endif /* HAVE_UNISTD_H */
 124
 125 #ifndef F_OK
 126 #define F_OK    0
 127 #endif /* !defined F_OK */
 128 #ifndef R_OK
 129 #define R_OK    4
 130 #endif /* !defined R_OK */
 131
 132 /* Unlike <ctype.h>'s isdigit, this also works if c < 0 | c > UCHAR_MAX. */
 133 #define is_digit(c) ((unsigned)(c) - '0' <= 9)
 134
 135 /*
 136 ** Define HAVE_STDINT_H's default value here, rather than at the
 137 ** start, since __GLIBC__'s value depends on previously-included
 138 ** files.
 139 ** (glibc 2.1 and later have stdint.h, even with pre-C99 compilers.)
 140 */
 141 #ifndef HAVE_STDINT_H
 142 #define HAVE_STDINT_H \
 143         (199901 <= __STDC_VERSION__ || \
 144         2 < (__GLIBC__ + (0 < __GLIBC_MINOR__)))
 145 #endif /* !defined HAVE_STDINT_H */
 146
 147 #if HAVE_STDINT_H
 148 #include "stdint.h"
 149 #endif /* !HAVE_STDINT_H */
 150
 151 #ifndef INT_FAST64_MAX
 152 /* Pre-C99 GCC compilers define __LONG_LONG_MAX__ instead of LLONG_MAX.  */
 153 #if defined LLONG_MAX || defined __LONG_LONG_MAX__
 154 typedef long long       int_fast64_t;
 155 #else /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
 156 #if (LONG_MAX >> 31) < 0xffffffff
 157 Please use a compiler that supports a 64-bit integer type (or wider);
 158 you may need to compile with "-DHAVE_STDINT_H".
 159 #endif /* (LONG_MAX >> 31) < 0xffffffff */
 160 typedef long            int_fast64_t;
 161 #endif /* ! (defined LLONG_MAX || defined __LONG_LONG_MAX__) */
 162 #endif /* !defined INT_FAST64_MAX */
 163
 164 #ifndef INT32_MAX
 165 #define INT32_MAX 0x7fffffff
 166 #endif /* !defined INT32_MAX */
 167 #ifndef INT32_MIN
 168 #define INT32_MIN (-1 - INT32_MAX)
 169 #endif /* !defined INT32_MIN */
 170
 171 /*
 172 ** Workarounds for compilers/systems.
 173 */
 174
 175 /*
 176 ** Some time.h implementations don't declare asctime_r.
 177 ** Others might define it as a macro.
 178 ** Fix the former without affecting the latter.
 179 */
 180
 181 #ifndef asctime_r
 182 extern char *   asctime_r(struct tm const *, char *);
 183 #endif
 184
 185 /*
 186 ** Private function declarations.
 187 */
 188
 189 char *          icalloc(int nelem, int elsize);
 190 char *          icatalloc(char * old, const char * new);
 191 char *          icpyalloc(const char * string);
 192 char *          imalloc(int n);
 193 void *          irealloc(void * pointer, int size);
 194 void            icfree(char * pointer);
 195 void            ifree(char * pointer);
 196 const char *    scheck(const char * string, const char * format);
 197
 198 /*
 199 ** Finally, some convenience items.
 200 */
 201
 202 #ifndef TRUE
 203 #define TRUE    1
 204 #endif /* !defined TRUE */
 205
 206 #ifndef FALSE
 207 #define FALSE   0
 208 #endif /* !defined FALSE */
 209
 210 #ifndef TYPE_BIT
 211 #define TYPE_BIT(type)  (sizeof (type) * CHAR_BIT)
 212 #endif /* !defined TYPE_BIT */
 213
 214 #ifndef TYPE_SIGNED
 215 #define TYPE_SIGNED(type) (((type) -1) < 0)
 216 #endif /* !defined TYPE_SIGNED */
 217
 218 /*
 219 ** Since the definition of TYPE_INTEGRAL contains floating point numbers,
 220 ** it cannot be used in preprocessor directives.
 221 */
 222
 223 #ifndef TYPE_INTEGRAL
 224 #define TYPE_INTEGRAL(type) (((type) 0.5) != 0.5)
 225 #endif /* !defined TYPE_INTEGRAL */
 226
 227 #ifndef INT_STRLEN_MAXIMUM
 228 /*
 229 ** 302 / 1000 is log10(2.0) rounded up.
 230 ** Subtract one for the sign bit if the type is signed;
 231 ** add one for integer division truncation;
 232 ** add one more for a minus sign if the type is signed.
 233 */
 234 #define INT_STRLEN_MAXIMUM(type) \
 235         ((TYPE_BIT(type) - TYPE_SIGNED(type)) * 302 / 1000 + \
 236         1 + TYPE_SIGNED(type))
 237 #endif /* !defined INT_STRLEN_MAXIMUM */
 238
 239 /*
 240 ** INITIALIZE(x)
 241 */
 242
 243 #ifndef GNUC_or_lint
 244 #ifdef lint
 245 #define GNUC_or_lint
 246 #endif /* defined lint */
 247 #ifndef lint
 248 #ifdef __GNUC__
 249 #define GNUC_or_lint
 250 #endif /* defined __GNUC__ */
 251 #endif /* !defined lint */
 252 #endif /* !defined GNUC_or_lint */
 253
 254 #ifndef INITIALIZE
 255 #ifdef GNUC_or_lint
 256 #define INITIALIZE(x)   ((x) = 0)
 257 #endif /* defined GNUC_or_lint */
 258 #ifndef GNUC_or_lint
 259 #define INITIALIZE(x)
 260 #endif /* !defined GNUC_or_lint */
 261 #endif /* !defined INITIALIZE */
 262
 263 /*
 264 ** For the benefit of GNU folk...
 265 ** `_(MSGID)' uses the current locale's message library string for MSGID.
 266 ** The default is to use gettext if available, and use MSGID otherwise.
 267 */
 268
 269 #ifndef _
 270 #if HAVE_GETTEXT
 271 #define _(msgid) gettext(msgid)
 272 #else /* !HAVE_GETTEXT */
 273 #define _(msgid) msgid
 274 #endif /* !HAVE_GETTEXT */
 275 #endif /* !defined _ */
 276
 277 #ifndef TZ_DOMAIN
 278 #define TZ_DOMAIN "tz"
 279 #endif /* !defined TZ_DOMAIN */
 280
 281 #if HAVE_INCOMPATIBLE_CTIME_R
 282 #undef asctime_r
 283 #undef ctime_r
 284 char *asctime_r(struct tm const *, char *);
 285 char *ctime_r(time_t const *, char *);
 286 #endif /* HAVE_INCOMPATIBLE_CTIME_R */
 287
 288 #ifndef YEARSPERREPEAT
 289 #define YEARSPERREPEAT          400     /* years before a Gregorian repeat */
 290 #endif /* !defined YEARSPERREPEAT */
 291
 292 /*
 293 ** The Gregorian year averages 365.2425 days, which is 31556952 seconds.
 294 */
 295
 296 #ifndef AVGSECSPERYEAR
 297 #define AVGSECSPERYEAR          31556952L
 298 #endif /* !defined AVGSECSPERYEAR */
 299
 300 #ifndef SECSPERREPEAT
 301 #define SECSPERREPEAT           ((int_fast64_t) YEARSPERREPEAT * (int_fast64_t) AVGSECSPERYEAR)
 302 #endif /* !defined SECSPERREPEAT */
 303
 304 #ifndef SECSPERREPEAT_BITS
 305 #define SECSPERREPEAT_BITS      34      /* ceil(log2(SECSPERREPEAT)) */
 306 #endif /* !defined SECSPERREPEAT_BITS */
 307
 308 /*
 309 ** UNIX was a registered trademark of The Open Group in 2003.
 310 */
 311
 312 #endif /* !defined PRIVATE_H */