* Copyright (c) 1988 Regents of the University of California.
* This code is derived from software contributed to Berkeley by
* Arthur David Olson of the National Cancer Institute.
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* @(#)tzfile.h 5.10 (Berkeley) 4/3/91
* Information about time zone files.
/* Time zone object file directory */
#define TZDIR "/usr/share/zoneinfo"
#define TZDEFAULT "/etc/localtime"
#define TZDEFRULES "posixrules"
** Each file begins with. . .
char tzh_reserved
[24]; /* reserved for future use */
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 */
** 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 GMT 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
** In the current implementation, "tzset()" refuses to deal with files that
** exceed any of the limits below.
** The TZ_MAX_TIMES value below is enough to handle a bit more than a
** year's worth of solar time (corrected daily to the nearest second) or
** 138 years of Pacific Presidential Election time
** (where there are three time zone transitions every fourth year).
#define NOSOLAR /* 4BSD doesn't currently handle solar time */
#define TZ_MAX_TYPES 256 /* Limited by what (unsigned char)'s can hold */
#define TZ_MAX_TYPES 10 /* Maximum number of local time types */
#define TZ_MAX_CHARS 50 /* Maximum number of abbreviation characters */
#define TZ_MAX_LEAPS 50 /* Maximum number of leap second corrections */
#define SECSPERHOUR (SECSPERMIN * MINSPERHOUR)
#define SECSPERDAY ((long) SECSPERHOUR * HOURSPERDAY)
#define TM_YEAR_BASE 1900
#define EPOCH_WDAY TM_THURSDAY
** Accurate only for the past couple of centuries;
** that will probably do.
#define isleap(y) (((y) % 4) == 0 && ((y) % 100) != 0 || ((y) % 400) == 0)