Update ICU to 54.1 step 1

source/tools/tzcode/tzfile.h

 #ifndef TZFILE_H
 
 #define TZFILE_H
 
 /*
 ** This file is in the public domain, so clarified as of
 ** 1996-06-05 by Arthur David Olson.
 */
 
 /*
 ** This header is for use ONLY with the time conversion code.
 ** There is no guarantee that it will remain unchanged,
 ** or that it will remain at all.
 ** Do NOT copy it to any system include directory.
 ** Thank you!
 */
 
 /*
-** ID
-*/
-
-#ifndef lint
-#ifndef NOID
-static char     tzfilehid[] = "@(#)tzfile.h     8.1";
-#endif /* !defined NOID */
-#endif /* !defined lint */
-
-/*
 ** Information about time zone files.
 */
 
 #ifndef TZDIR
 #define TZDIR   "/usr/local/etc/zoneinfo" /* Time zone object file directory */
 #endif /* !defined TZDIR */
 
 #ifndef TZDEFAULT
 #define TZDEFAULT       "localtime"
 #endif /* !defined TZDEFAULT */
 
 #ifndef TZDEFRULES
 #define TZDEFRULES      "posixrules"
 #endif /* !defined TZDEFRULES */
 
 /*
 ** Each file begins with. . .
 */
 
 #define TZ_MAGIC        "TZif"
 
 struct tzhead {
         char    tzh_magic[4];           /* TZ_MAGIC */
-        char    tzh_version[1];         /* '\0' or '2' as of 2005 */
+        char    tzh_version[1];         /* '\0' or '2' or '3' as of 2013 */
         char    tzh_reserved[15];       /* reserved--must be zero */
         char    tzh_ttisgmtcnt[4];      /* coded number of trans. time flags */
         char    tzh_ttisstdcnt[4];      /* coded number of trans. time flags */
         char    tzh_leapcnt[4];         /* coded number of leap seconds */
         char    tzh_timecnt[4];         /* coded number of transition times */
         char    tzh_typecnt[4];         /* coded number of local time types */
         char    tzh_charcnt[4];         /* coded number of abbr. chars */
 };
 
 /*
 ** . . .followed by. . .
 **
 **      tzh_timecnt (char [4])s         coded transition times a la time(2)
 **      tzh_timecnt (unsigned char)s    types of local time starting at above
 **      tzh_typecnt repetitions of
-**              one (char [4])          coded UTC offset in seconds
+**              one (char [4])          coded UT offset in seconds
 **              one (unsigned char)     used to set tm_isdst
 **              one (unsigned char)     that's an abbreviation list index
 **      tzh_charcnt (char)s             '\0'-terminated zone abbreviations
 **      tzh_leapcnt repetitions of
 **              one (char [4])          coded leap second transition times
 **              one (char [4])          total correction after above
 **      tzh_ttisstdcnt (char)s          indexed by type; if TRUE, transition
 **                                      time is standard time, if FALSE,
 **                                      transition time is wall clock time
 **                                      if absent, transition times are
 **                                      assumed to be wall clock time
 **      tzh_ttisgmtcnt (char)s          indexed by type; if TRUE, transition
-**                                      time is UTC, if FALSE,
+**                                      time is UT, if FALSE,
 **                                      transition time is local time
 **                                      if absent, transition times are
 **                                      assumed to be local time
 */
 
 /*
 ** If tzh_version is '2' or greater, the above is followed by a second instance
 ** of tzhead and a second instance of the data in which each coded transition
 ** time uses 8 rather than 4 chars,
 ** then a POSIX-TZ-environment-variable-style string for use in handling
 ** instants after the last transition time stored in the file
 ** (with nothing between the newlines if there is no POSIX representation for
 ** such instants).
+**
+** If tz_version is '3' or greater, the above is extended as follows.
+** First, the POSIX TZ string's hour offset may range from -167
+** through 167 as compared to the POSIX-required 0 through 24.
+** Second, its DST start time may be January 1 at 00:00 and its stop
+** time December 31 at 24:00 plus the difference between DST and
+** standard time, indicating DST all year.
 */
 
 /*
 ** In the current implementation, "tzset()" refuses to deal with files that
 ** exceed any of the limits below.
 */
 
 #ifndef TZ_MAX_TIMES
-#define TZ_MAX_TIMES    1200
+#define TZ_MAX_TIMES    2000
 #endif /* !defined TZ_MAX_TIMES */
 
 #ifndef TZ_MAX_TYPES
-#ifndef NOSOLAR
+/* This must be at least 17 for Europe/Samara and Europe/Vilnius.  */
 #define TZ_MAX_TYPES    256 /* Limited by what (unsigned char)'s can hold */
-#endif /* !defined NOSOLAR */
-#ifdef NOSOLAR
-/*
-** Must be at least 14 for Europe/Riga as of Jan 12 1995,
-** as noted by Earl Chew.
-*/
-#define TZ_MAX_TYPES    20      /* Maximum number of local time types */
-#endif /* !defined NOSOLAR */
 #endif /* !defined TZ_MAX_TYPES */
 
 #ifndef TZ_MAX_CHARS
 #define TZ_MAX_CHARS    50      /* Maximum number of abbreviation characters */
                                 /* (limited by what unsigned chars can hold) */
 #endif /* !defined TZ_MAX_CHARS */
 
 #ifndef TZ_MAX_LEAPS
 #define TZ_MAX_LEAPS    50      /* Maximum number of leap second corrections */
 #endif /* !defined TZ_MAX_LEAPS */
 
 #define SECSPERMIN      60
 #define MINSPERHOUR     60
 #define HOURSPERDAY     24
 #define DAYSPERWEEK     7
 #define DAYSPERNYEAR    365
 #define DAYSPERLYEAR    366
 #define SECSPERHOUR     (SECSPERMIN * MINSPERHOUR)
-#define SECSPERDAY      ((long) SECSPERHOUR * HOURSPERDAY)
+#define SECSPERDAY      ((int_fast32_t) SECSPERHOUR * HOURSPERDAY)
 #define MONSPERYEAR     12
 
 #define TM_SUNDAY       0
 #define TM_MONDAY       1
 #define TM_TUESDAY      2
 #define TM_WEDNESDAY    3
 #define TM_THURSDAY     4
 #define TM_FRIDAY       5
 #define TM_SATURDAY     6
 
@@ skipping 25 matching lines @@
 ** or
 **      isleap(a + b) == isleap(a % 400 + b % 400)
 ** This is true even if % means modulo rather than Fortran remainder
 ** (which is allowed by C89 but not C99).
 ** We use this to avoid addition overflow problems.
 */
 
 #define isleap_sum(a, b)        isleap((a) % 400 + (b) % 400)
 
 #endif /* !defined TZFILE_H */