remove local copy of tzfile.h
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christos
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/* $NetBSD: tzfile.h,v 1.16 2014/10/07 21:51:03 christos Exp $ */
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#ifndef TZFILE_H
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#define TZFILE_H
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/*
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** This file is in the public domain, so clarified as of
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** 1996-06-05 by Arthur David Olson.
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*/
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/*
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** This header is for use ONLY with the time conversion code.
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** There is no guarantee that it will remain unchanged,
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** or that it will remain at all.
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** Do NOT copy it to any system include directory.
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** Thank you!
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*/
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/*
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** Information about time zone files.
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*/
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#ifndef TZDIR /* Time zone object file directory */
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#define TZDIR "/usr/share/zoneinfo"
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#endif /* !defined TZDIR */
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#ifndef TZDEFAULT
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#define TZDEFAULT "/etc/localtime"
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#endif /* !defined TZDEFAULT */
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#ifndef TZDEFRULES
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#define TZDEFRULES "posixrules"
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#endif /* !defined TZDEFRULES */
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/*
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** Each file begins with. . .
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*/
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#define TZ_MAGIC "TZif"
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struct tzhead {
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char tzh_magic[4]; /* TZ_MAGIC */
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char tzh_version[1]; /* '\0' or '2' or '3' as of 2013 */
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char tzh_reserved[15]; /* reserved; must be zero */
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char tzh_ttisgmtcnt[4]; /* coded number of trans. time flags */
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char tzh_ttisstdcnt[4]; /* coded number of trans. time flags */
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char tzh_leapcnt[4]; /* coded number of leap seconds */
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char tzh_timecnt[4]; /* coded number of transition times */
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char tzh_typecnt[4]; /* coded number of local time types */
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char tzh_charcnt[4]; /* coded number of abbr. chars */
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};
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/*
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** . . .followed by. . .
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**
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** tzh_timecnt (char [4])s coded transition times a la time(2)
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** tzh_timecnt (unsigned char)s types of local time starting at above
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** tzh_typecnt repetitions of
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** one (char [4]) coded UT offset in seconds
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** one (unsigned char) used to set tm_isdst
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** one (unsigned char) that's an abbreviation list index
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** tzh_charcnt (char)s '\0'-terminated zone abbreviations
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** tzh_leapcnt repetitions of
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** one (char [4]) coded leap second transition times
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** one (char [4]) total correction after above
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** tzh_ttisstdcnt (char)s indexed by type; if 1, transition
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** time is standard time, if 0,
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** transition time is wall clock time
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** if absent, transition times are
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** assumed to be wall clock time
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** tzh_ttisgmtcnt (char)s indexed by type; if 1, transition
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** time is UT, if 0,
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** transition time is local time
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** if absent, transition times are
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** assumed to be local time
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*/
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/*
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** If tzh_version is '2' or greater, the above is followed by a second instance
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** of tzhead and a second instance of the data in which each coded transition
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** time uses 8 rather than 4 chars,
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** then a POSIX-TZ-environment-variable-style string for use in handling
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** instants after the last transition time stored in the file
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** (with nothing between the newlines if there is no POSIX representation for
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** such instants).
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**
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** If tz_version is '3' or greater, the above is extended as follows.
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** First, the POSIX TZ string's hour offset may range from -167
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** through 167 as compared to the POSIX-required 0 through 24.
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** Second, its DST start time may be January 1 at 00:00 and its stop
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** time December 31 at 24:00 plus the difference between DST and
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** standard time, indicating DST all year.
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*/
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/*
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** In the current implementation, "tzset()" refuses to deal with files that
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** exceed any of the limits below.
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*/
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#ifndef TZ_MAX_TIMES
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#define TZ_MAX_TIMES 2000
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#endif /* !defined TZ_MAX_TIMES */
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#ifndef TZ_MAX_TYPES
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/* This must be at least 17 for Europe/Samara and Europe/Vilnius. */
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#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
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#endif /* !defined TZ_MAX_TYPES */
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#ifndef TZ_MAX_CHARS
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#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
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/* (limited by what unsigned chars can hold) */
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#endif /* !defined TZ_MAX_CHARS */
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#ifndef TZ_MAX_LEAPS
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#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
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#endif /* !defined TZ_MAX_LEAPS */
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#define SECSPERMIN 60
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#define MINSPERHOUR 60
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#define HOURSPERDAY 24
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#define DAYSPERWEEK 7
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#define DAYSPERNYEAR 365
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#define DAYSPERLYEAR 366
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#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
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#define SECSPERDAY ((int_fast32_t) SECSPERHOUR * HOURSPERDAY)
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#define MONSPERYEAR 12
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#define TM_SUNDAY 0
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#define TM_MONDAY 1
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#define TM_TUESDAY 2
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#define TM_WEDNESDAY 3
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#define TM_THURSDAY 4
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#define TM_FRIDAY 5
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#define TM_SATURDAY 6
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#define TM_JANUARY 0
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#define TM_FEBRUARY 1
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#define TM_MARCH 2
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#define TM_APRIL 3
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#define TM_MAY 4
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#define TM_JUNE 5
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#define TM_JULY 6
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#define TM_AUGUST 7
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#define TM_SEPTEMBER 8
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#define TM_OCTOBER 9
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#define TM_NOVEMBER 10
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#define TM_DECEMBER 11
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#define TM_YEAR_BASE 1900
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#define EPOCH_YEAR 1970
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#define EPOCH_WDAY TM_THURSDAY
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#define isleap(y) (((y) % 4) == 0 && (((y) % 100) != 0 || ((y) % 400) == 0))
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/*
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** Since everything in isleap is modulo 400 (or a factor of 400), we know that
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** isleap(y) == isleap(y % 400)
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** and so
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** isleap(a + b) == isleap((a + b) % 400)
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** or
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** isleap(a + b) == isleap(a % 400 + b % 400)
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** This is true even if % means modulo rather than Fortran remainder
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** (which is allowed by C89 but not C99).
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** We use this to avoid addition overflow problems.
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*/
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#define isleap_sum(a, b) isleap((a) % 400 + (b) % 400)
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#endif /* !defined TZFILE_H */
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