Convert DOS newlines to Unix newlines.

1 files changed, 1712 insertions, 1712 deletions

diff --git a/src/timezone/localtime.c b/src/timezone/localtime.c
index 4f389b52dee..6936cd674be 100644
--- a/src/timezone/localtime.c
+++ b/src/timezone/localtime.c
@@ -1,1712 +1,1712 @@
-#include "pgtz.h"

-#undef open

-#define timezone pg_timezone

-#define USG_COMPAT

-extern time_t pg_timezone;

-/*

-** This file is in the public domain, so clarified as of

-** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).

-*/

-

-#ifndef lint

-#ifndef NOID

-static char	elsieid[] = "@(#)localtime.c	7.78";

-#endif /* !defined NOID */

-#endif /* !defined lint */

-

-/*

-** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).

-** POSIX-style TZ environment variable handling from Guy Harris

-** (guy@auspex.com).

-*/

-

-/*LINTLIBRARY*/

-

-#include "private.h"

-#include "tzfile.h"

-#include "fcntl.h"

-

-/*

-** SunOS 4.1.1 headers lack O_BINARY.

-*/

-

-#ifdef O_BINARY

-#define OPEN_MODE	(O_RDONLY | O_BINARY)

-#endif /* defined O_BINARY */

-#ifndef O_BINARY

-#define OPEN_MODE	O_RDONLY

-#endif /* !defined O_BINARY */

-

-#ifndef WILDABBR

-/*

-** Someone might make incorrect use of a time zone abbreviation:

-**	1.	They might reference tzname[0] before calling tzset (explicitly

-**		or implicitly).

-**	2.	They might reference tzname[1] before calling tzset (explicitly

-**		or implicitly).

-**	3.	They might reference tzname[1] after setting to a time zone

-**		in which Daylight Saving Time is never observed.

-**	4.	They might reference tzname[0] after setting to a time zone

-**		in which Standard Time is never observed.

-**	5.	They might reference tm.TM_ZONE after calling offtime.

-** What's best to do in the above cases is open to debate;

-** for now, we just set things up so that in any of the five cases

-** WILDABBR is used.  Another possibility:  initialize tzname[0] to the

-** string "tzname[0] used before set", and similarly for the other cases.

-** And another:  initialize tzname[0] to "ERA", with an explanation in the

-** manual page of what this "time zone abbreviation" means (doing this so

-** that tzname[0] has the "normal" length of three characters).

-*/

-#define WILDABBR	"   "

-#endif /* !defined WILDABBR */

-

-static char		wildabbr[] = "WILDABBR";

-

-static const char	gmt[] = "GMT";

-

-/*

-** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.

-** We default to US rules as of 1999-08-17.

-** POSIX 1003.1 section 8.1.1 says that the default DST rules are

-** implementation dependent; for historical reasons, US rules are a

-** common default.

-*/

-#ifndef TZDEFRULESTRING

-#define TZDEFRULESTRING ",M4.1.0,M10.5.0"

-#endif /* !defined TZDEFDST */

-

-struct ttinfo {				/* time type information */

-	long		tt_gmtoff;	/* UTC offset in seconds */

-	int		tt_isdst;	/* used to set tm_isdst */

-	int		tt_abbrind;	/* abbreviation list index */

-	int		tt_ttisstd;	/* TRUE if transition is std time */

-	int		tt_ttisgmt;	/* TRUE if transition is UTC */

-};

-

-struct lsinfo {				/* leap second information */

-	time_t		ls_trans;	/* transition time */

-	long		ls_corr;	/* correction to apply */

-};

-

-#define BIGGEST(a, b)	(((a) > (b)) ? (a) : (b))

-

-#ifdef TZNAME_MAX

-#define MY_TZNAME_MAX	TZNAME_MAX

-#endif /* defined TZNAME_MAX */

-#ifndef TZNAME_MAX

-#define MY_TZNAME_MAX	255

-#endif /* !defined TZNAME_MAX */

-

-struct state {

-	int		leapcnt;

-	int		timecnt;

-	int		typecnt;

-	int		charcnt;

-	time_t		ats[TZ_MAX_TIMES];

-	unsigned char	types[TZ_MAX_TIMES];

-	struct ttinfo	ttis[TZ_MAX_TYPES];

-	char		chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),

-				(2 * (MY_TZNAME_MAX + 1)))];

-	struct lsinfo	lsis[TZ_MAX_LEAPS];

-};

-

-struct rule {

-	int		r_type;		/* type of rule--see below */

-	int		r_day;		/* day number of rule */

-	int		r_week;		/* week number of rule */

-	int		r_mon;		/* month number of rule */

-	long		r_time;		/* transition time of rule */

-};

-

-#define JULIAN_DAY		0	/* Jn - Julian day */

-#define DAY_OF_YEAR		1	/* n - day of year */

-#define MONTH_NTH_DAY_OF_WEEK	2	/* Mm.n.d - month, week, day of week */

-

-/*

-** Prototypes for static functions.

-*/

-

-static long		detzcode P((const char * codep));

-static const char *	getzname P((const char * strp));

-static const char *	getnum P((const char * strp, int * nump, int min,

-				int max));

-static const char *	getsecs P((const char * strp, long * secsp));

-static const char *	getoffset P((const char * strp, long * offsetp));

-static const char *	getrule P((const char * strp, struct rule * rulep));

-static void		gmtload P((struct state * sp));

-static void		gmtsub P((const time_t * timep, long offset,

-				struct tm * tmp));

-static void		localsub P((const time_t * timep, long offset,

-				struct tm * tmp));

-static int		increment_overflow P((int * number, int delta));

-static int		normalize_overflow P((int * tensptr, int * unitsptr,

-				int base));

-static void		settzname P((void));

-static time_t		time1 P((struct tm * tmp,

-				void(*funcp) P((const time_t *,

-				long, struct tm *)),

-				long offset));

-static time_t		time2 P((struct tm *tmp,

-				void(*funcp) P((const time_t *,

-				long, struct tm*)),

-				long offset, int * okayp));

-static time_t		time2sub P((struct tm *tmp,

-				void(*funcp) P((const time_t *,

-				long, struct tm*)),

-				long offset, int * okayp, int do_norm_secs));

-static void		timesub P((const time_t * timep, long offset,

-				const struct state * sp, struct tm * tmp));

-static int		tmcomp P((const struct tm * atmp,

-				const struct tm * btmp));

-static time_t		transtime P((time_t janfirst, int year,

-				const struct rule * rulep, long offset));

-static int		tzload P((const char * name, struct state * sp));

-static int		tzparse P((const char * name, struct state * sp,

-				int lastditch));

-

-#ifdef ALL_STATE

-static struct state *	lclptr;

-static struct state *	gmtptr;

-#endif /* defined ALL_STATE */

-

-#ifndef ALL_STATE

-static struct state	lclmem;

-static struct state	gmtmem;

-#define lclptr		(&lclmem)

-#define gmtptr		(&gmtmem)

-#endif /* State Farm */

-

-#ifndef TZ_STRLEN_MAX

-#define TZ_STRLEN_MAX 255

-#endif /* !defined TZ_STRLEN_MAX */

-

-static char		lcl_TZname[TZ_STRLEN_MAX + 1];

-static int		lcl_is_set;

-static int		gmt_is_set;

-

-char *			tzname[2] = {

-	wildabbr,

-	wildabbr

-};

-

-/*

-** Section 4.12.3 of X3.159-1989 requires that

-**	Except for the strftime function, these functions [asctime,

-**	ctime, gmtime, localtime] return values in one of two static

-**	objects: a broken-down time structure and an array of char.

-** Thanks to Paul Eggert (eggert@twinsun.com) for noting this.

-*/

-

-static struct tm	tm;

-

-#ifdef USG_COMPAT

-time_t			timezone = 0;

-int			daylight = 0;

-#endif /* defined USG_COMPAT */

-

-#ifdef ALTZONE

-time_t			altzone = 0;

-#endif /* defined ALTZONE */

-

-static long

-detzcode(codep)

-const char * const	codep;

-{

-	register long	result;

-	register int	i;

-

-	result = (codep[0] & 0x80) ? ~0L : 0L;

-	for (i = 0; i < 4; ++i)

-		result = (result << 8) | (codep[i] & 0xff);

-	return result;

-}

-

-static void

-settzname P((void))

-{

-	register struct state * const	sp = lclptr;

-	register int			i;

-

-	tzname[0] = wildabbr;

-	tzname[1] = wildabbr;

-#ifdef USG_COMPAT

-	daylight = 0;

-	timezone = 0;

-#endif /* defined USG_COMPAT */

-#ifdef ALTZONE

-	altzone = 0;

-#endif /* defined ALTZONE */

-#ifdef ALL_STATE

-	if (sp == NULL) {

-		tzname[0] = tzname[1] = gmt;

-		return;

-	}

-#endif /* defined ALL_STATE */

-	for (i = 0; i < sp->typecnt; ++i) {

-		register const struct ttinfo * const	ttisp = &sp->ttis[i];

-

-		tzname[ttisp->tt_isdst] =

-			&sp->chars[ttisp->tt_abbrind];

-#ifdef USG_COMPAT

-		if (ttisp->tt_isdst)

-			daylight = 1;

-		if (i == 0 || !ttisp->tt_isdst)

-			timezone = -(ttisp->tt_gmtoff);

-#endif /* defined USG_COMPAT */

-#ifdef ALTZONE

-		if (i == 0 || ttisp->tt_isdst)

-			altzone = -(ttisp->tt_gmtoff);

-#endif /* defined ALTZONE */

-	}

-	/*

-	** And to get the latest zone names into tzname. . .

-	*/

-	for (i = 0; i < sp->timecnt; ++i) {

-		register const struct ttinfo * const	ttisp =

-							&sp->ttis[

-								sp->types[i]];

-

-		tzname[ttisp->tt_isdst] =

-			&sp->chars[ttisp->tt_abbrind];

-	}

-}

-

-static int

-tzload(name, sp)

-register const char *		name;

-register struct state * const	sp;

-{

-	register const char *	p;

-	register int		i;

-	register int		fid;

-

-	if (name == NULL && (name = TZDEFAULT) == NULL)

-		return -1;

-	{

-		register int	doaccess;

-		/*

-		** Section 4.9.1 of the C standard says that

-		** "FILENAME_MAX expands to an integral constant expression

-		** that is the size needed for an array of char large enough

-		** to hold the longest file name string that the implementation

-		** guarantees can be opened."

-		*/

-		char		fullname[FILENAME_MAX + 1];

-

-		if (name[0] == ':')

-			++name;

-		doaccess = name[0] == '/';

-		if (!doaccess) {

-			if ((p = TZDIR) == NULL)

-				return -1;

-			if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)

-				return -1;

-			(void) strcpy(fullname, p);

-			(void) strcat(fullname, "/");

-			(void) strcat(fullname, name);

-			/*

-			** Set doaccess if '.' (as in "../") shows up in name.

-			*/

-			if (strchr(name, '.') != NULL)

-				doaccess = TRUE;

-			name = fullname;

-		}

-		if (doaccess && access(name, R_OK) != 0)

-			return -1;

-		if ((fid = open(name, OPEN_MODE)) == -1)

-			return -1;

-	}

-	{

-		struct tzhead *	tzhp;

-		union {

-			struct tzhead	tzhead;

-			char		buf[sizeof *sp + sizeof *tzhp];

-		} u;

-		int		ttisstdcnt;

-		int		ttisgmtcnt;

-

-		i = read(fid, u.buf, sizeof u.buf);

-		if (close(fid) != 0)

-			return -1;

-		ttisstdcnt = (int) detzcode(u.tzhead.tzh_ttisstdcnt);

-		ttisgmtcnt = (int) detzcode(u.tzhead.tzh_ttisgmtcnt);

-		sp->leapcnt = (int) detzcode(u.tzhead.tzh_leapcnt);

-		sp->timecnt = (int) detzcode(u.tzhead.tzh_timecnt);

-		sp->typecnt = (int) detzcode(u.tzhead.tzh_typecnt);

-		sp->charcnt = (int) detzcode(u.tzhead.tzh_charcnt);

-		p = u.tzhead.tzh_charcnt + sizeof u.tzhead.tzh_charcnt;

-		if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||

-			sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||

-			sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||

-			sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||

-			(ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||

-			(ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))

-				return -1;

-		if (i - (p - u.buf) < sp->timecnt * 4 +	/* ats */

-			sp->timecnt +			/* types */

-			sp->typecnt * (4 + 2) +		/* ttinfos */

-			sp->charcnt +			/* chars */

-			sp->leapcnt * (4 + 4) +		/* lsinfos */

-			ttisstdcnt +			/* ttisstds */

-			ttisgmtcnt)			/* ttisgmts */

-				return -1;

-		for (i = 0; i < sp->timecnt; ++i) {

-			sp->ats[i] = detzcode(p);

-			p += 4;

-		}

-		for (i = 0; i < sp->timecnt; ++i) {

-			sp->types[i] = (unsigned char) *p++;

-			if (sp->types[i] >= sp->typecnt)

-				return -1;

-		}

-		for (i = 0; i < sp->typecnt; ++i) {

-			register struct ttinfo *	ttisp;

-

-			ttisp = &sp->ttis[i];

-			ttisp->tt_gmtoff = detzcode(p);

-			p += 4;

-			ttisp->tt_isdst = (unsigned char) *p++;

-			if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)

-				return -1;

-			ttisp->tt_abbrind = (unsigned char) *p++;

-			if (ttisp->tt_abbrind < 0 ||

-				ttisp->tt_abbrind > sp->charcnt)

-					return -1;

-		}

-		for (i = 0; i < sp->charcnt; ++i)

-			sp->chars[i] = *p++;

-		sp->chars[i] = '\0';	/* ensure '\0' at end */

-		for (i = 0; i < sp->leapcnt; ++i) {

-			register struct lsinfo *	lsisp;

-

-			lsisp = &sp->lsis[i];

-			lsisp->ls_trans = detzcode(p);

-			p += 4;

-			lsisp->ls_corr = detzcode(p);

-			p += 4;

-		}

-		for (i = 0; i < sp->typecnt; ++i) {

-			register struct ttinfo *	ttisp;

-

-			ttisp = &sp->ttis[i];

-			if (ttisstdcnt == 0)

-				ttisp->tt_ttisstd = FALSE;

-			else {

-				ttisp->tt_ttisstd = *p++;

-				if (ttisp->tt_ttisstd != TRUE &&

-					ttisp->tt_ttisstd != FALSE)

-						return -1;

-			}

-		}

-		for (i = 0; i < sp->typecnt; ++i) {

-			register struct ttinfo *	ttisp;

-

-			ttisp = &sp->ttis[i];

-			if (ttisgmtcnt == 0)

-				ttisp->tt_ttisgmt = FALSE;

-			else {

-				ttisp->tt_ttisgmt = *p++;

-				if (ttisp->tt_ttisgmt != TRUE &&

-					ttisp->tt_ttisgmt != FALSE)

-						return -1;

-			}

-		}

-	}

-	return 0;

-}

-

-static const int	mon_lengths[2][MONSPERYEAR] = {

-	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },

-	{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }

-};

-

-static const int	year_lengths[2] = {

-	DAYSPERNYEAR, DAYSPERLYEAR

-};

-

-/*

-** Given a pointer into a time zone string, scan until a character that is not

-** a valid character in a zone name is found.  Return a pointer to that

-** character.

-*/

-

-static const char *

-getzname(strp)

-register const char *	strp;

-{

-	register char	c;

-

-	while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&

-		c != '+')

-			++strp;

-	return strp;

-}

-

-/*

-** Given a pointer into a time zone string, extract a number from that string.

-** Check that the number is within a specified range; if it is not, return

-** NULL.

-** Otherwise, return a pointer to the first character not part of the number.

-*/

-

-static const char *

-getnum(strp, nump, min, max)

-register const char *	strp;

-int * const		nump;

-const int		min;

-const int		max;

-{

-	register char	c;

-	register int	num;

-

-	if (strp == NULL || !is_digit(c = *strp))

-		return NULL;

-	num = 0;

-	do {

-		num = num * 10 + (c - '0');

-		if (num > max)

-			return NULL;	/* illegal value */

-		c = *++strp;

-	} while (is_digit(c));

-	if (num < min)

-		return NULL;		/* illegal value */

-	*nump = num;

-	return strp;

-}

-

-/*

-** Given a pointer into a time zone string, extract a number of seconds,

-** in hh[:mm[:ss]] form, from the string.

-** If any error occurs, return NULL.

-** Otherwise, return a pointer to the first character not part of the number

-** of seconds.

-*/

-

-static const char *

-getsecs(strp, secsp)

-register const char *	strp;

-long * const		secsp;

-{

-	int	num;

-

-	/*

-	** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like

-	** "M10.4.6/26", which does not conform to Posix,

-	** but which specifies the equivalent of

-	** ``02:00 on the first Sunday on or after 23 Oct''.

-	*/

-	strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);

-	if (strp == NULL)

-		return NULL;

-	*secsp = num * (long) SECSPERHOUR;

-	if (*strp == ':') {

-		++strp;

-		strp = getnum(strp, &num, 0, MINSPERHOUR - 1);

-		if (strp == NULL)

-			return NULL;

-		*secsp += num * SECSPERMIN;

-		if (*strp == ':') {

-			++strp;

-			/* `SECSPERMIN' allows for leap seconds.  */

-			strp = getnum(strp, &num, 0, SECSPERMIN);

-			if (strp == NULL)

-				return NULL;

-			*secsp += num;

-		}

-	}

-	return strp;

-}

-

-/*

-** Given a pointer into a time zone string, extract an offset, in

-** [+-]hh[:mm[:ss]] form, from the string.

-** If any error occurs, return NULL.

-** Otherwise, return a pointer to the first character not part of the time.

-*/

-

-static const char *

-getoffset(strp, offsetp)

-register const char *	strp;

-long * const		offsetp;

-{

-	register int	neg = 0;

-

-	if (*strp == '-') {

-		neg = 1;

-		++strp;

-	} else if (*strp == '+')

-		++strp;

-	strp = getsecs(strp, offsetp);

-	if (strp == NULL)

-		return NULL;		/* illegal time */

-	if (neg)

-		*offsetp = -*offsetp;

-	return strp;

-}

-

-/*

-** Given a pointer into a time zone string, extract a rule in the form

-** date[/time].  See POSIX section 8 for the format of "date" and "time".

-** If a valid rule is not found, return NULL.

-** Otherwise, return a pointer to the first character not part of the rule.

-*/

-

-static const char *

-getrule(strp, rulep)

-const char *			strp;

-register struct rule * const	rulep;

-{

-	if (*strp == 'J') {

-		/*

-		** Julian day.

-		*/

-		rulep->r_type = JULIAN_DAY;

-		++strp;

-		strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);

-	} else if (*strp == 'M') {

-		/*

-		** Month, week, day.

-		*/

-		rulep->r_type = MONTH_NTH_DAY_OF_WEEK;

-		++strp;

-		strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);

-		if (strp == NULL)

-			return NULL;

-		if (*strp++ != '.')

-			return NULL;

-		strp = getnum(strp, &rulep->r_week, 1, 5);

-		if (strp == NULL)

-			return NULL;

-		if (*strp++ != '.')

-			return NULL;

-		strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);

-	} else if (is_digit(*strp)) {

-		/*

-		** Day of year.

-		*/

-		rulep->r_type = DAY_OF_YEAR;

-		strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);

-	} else	return NULL;		/* invalid format */

-	if (strp == NULL)

-		return NULL;

-	if (*strp == '/') {

-		/*

-		** Time specified.

-		*/

-		++strp;

-		strp = getsecs(strp, &rulep->r_time);

-	} else	rulep->r_time = 2 * SECSPERHOUR;	/* default = 2:00:00 */

-	return strp;

-}

-

-/*

-** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the

-** year, a rule, and the offset from UTC at the time that rule takes effect,

-** calculate the Epoch-relative time that rule takes effect.

-*/

-

-static time_t

-transtime(janfirst, year, rulep, offset)

-const time_t				janfirst;

-const int				year;

-register const struct rule * const	rulep;

-const long				offset;

-{

-	register int	leapyear;

-	register time_t	value;

-	register int	i;

-	int		d, m1, yy0, yy1, yy2, dow;

-

-	INITIALIZE(value);

-	leapyear = isleap(year);

-	switch (rulep->r_type) {

-

-	case JULIAN_DAY:

-		/*

-		** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap

-		** years.

-		** In non-leap years, or if the day number is 59 or less, just

-		** add SECSPERDAY times the day number-1 to the time of

-		** January 1, midnight, to get the day.

-		*/

-		value = janfirst + (rulep->r_day - 1) * SECSPERDAY;

-		if (leapyear && rulep->r_day >= 60)

-			value += SECSPERDAY;

-		break;

-

-	case DAY_OF_YEAR:

-		/*

-		** n - day of year.

-		** Just add SECSPERDAY times the day number to the time of

-		** January 1, midnight, to get the day.

-		*/

-		value = janfirst + rulep->r_day * SECSPERDAY;

-		break;

-

-	case MONTH_NTH_DAY_OF_WEEK:

-		/*

-		** Mm.n.d - nth "dth day" of month m.

-		*/

-		value = janfirst;

-		for (i = 0; i < rulep->r_mon - 1; ++i)

-			value += mon_lengths[leapyear][i] * SECSPERDAY;

-

-		/*

-		** Use Zeller's Congruence to get day-of-week of first day of

-		** month.

-		*/

-		m1 = (rulep->r_mon + 9) % 12 + 1;

-		yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;

-		yy1 = yy0 / 100;

-		yy2 = yy0 % 100;

-		dow = ((26 * m1 - 2) / 10 +

-			1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;

-		if (dow < 0)

-			dow += DAYSPERWEEK;

-

-		/*

-		** "dow" is the day-of-week of the first day of the month.  Get

-		** the day-of-month (zero-origin) of the first "dow" day of the

-		** month.

-		*/

-		d = rulep->r_day - dow;

-		if (d < 0)

-			d += DAYSPERWEEK;

-		for (i = 1; i < rulep->r_week; ++i) {

-			if (d + DAYSPERWEEK >=

-				mon_lengths[leapyear][rulep->r_mon - 1])

-					break;

-			d += DAYSPERWEEK;

-		}

-

-		/*

-		** "d" is the day-of-month (zero-origin) of the day we want.

-		*/

-		value += d * SECSPERDAY;

-		break;

-	}

-

-	/*

-	** "value" is the Epoch-relative time of 00:00:00 UTC on the day in

-	** question.  To get the Epoch-relative time of the specified local

-	** time on that day, add the transition time and the current offset

-	** from UTC.

-	*/

-	return value + rulep->r_time + offset;

-}

-

-/*

-** Given a POSIX section 8-style TZ string, fill in the rule tables as

-** appropriate.

-*/

-

-static int

-tzparse(name, sp, lastditch)

-const char *			name;

-register struct state * const	sp;

-const int			lastditch;

-{

-	const char *			stdname;

-	const char *			dstname;

-	size_t				stdlen;

-	size_t				dstlen;

-	long				stdoffset;

-	long				dstoffset;

-	register time_t *		atp;

-	register unsigned char *	typep;

-	register char *			cp;

-	register int			load_result;

-

-	INITIALIZE(dstname);

-	stdname = name;

-	if (lastditch) {

-		stdlen = strlen(name);	/* length of standard zone name */

-		name += stdlen;

-		if (stdlen >= sizeof sp->chars)

-			stdlen = (sizeof sp->chars) - 1;

-		stdoffset = 0;

-	} else {

-		name = getzname(name);

-		stdlen = name - stdname;

-		if (stdlen < 3)

-			return -1;

-		if (*name == '\0')

-			return -1;

-		name = getoffset(name, &stdoffset);

-		if (name == NULL)

-			return -1;

-	}

-	load_result = tzload(TZDEFRULES, sp);

-	if (load_result != 0)

-		sp->leapcnt = 0;		/* so, we're off a little */

-	if (*name != '\0') {

-		dstname = name;

-		name = getzname(name);

-		dstlen = name - dstname;	/* length of DST zone name */

-		if (dstlen < 3)

-			return -1;

-		if (*name != '\0' && *name != ',' && *name != ';') {

-			name = getoffset(name, &dstoffset);

-			if (name == NULL)

-				return -1;

-		} else	dstoffset = stdoffset - SECSPERHOUR;

-		if (*name == '\0' && load_result != 0)

-			name = TZDEFRULESTRING;

-		if (*name == ',' || *name == ';') {

-			struct rule	start;

-			struct rule	end;

-			register int	year;

-			register time_t	janfirst;

-			time_t		starttime;

-			time_t		endtime;

-

-			++name;

-			if ((name = getrule(name, &start)) == NULL)

-				return -1;

-			if (*name++ != ',')

-				return -1;

-			if ((name = getrule(name, &end)) == NULL)

-				return -1;

-			if (*name != '\0')

-				return -1;

-			sp->typecnt = 2;	/* standard time and DST */

-			/*

-			** Two transitions per year, from EPOCH_YEAR to 2037.

-			*/

-			sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1);

-			if (sp->timecnt > TZ_MAX_TIMES)

-				return -1;

-			sp->ttis[0].tt_gmtoff = -dstoffset;

-			sp->ttis[0].tt_isdst = 1;

-			sp->ttis[0].tt_abbrind = stdlen + 1;

-			sp->ttis[1].tt_gmtoff = -stdoffset;

-			sp->ttis[1].tt_isdst = 0;

-			sp->ttis[1].tt_abbrind = 0;

-			atp = sp->ats;

-			typep = sp->types;

-			janfirst = 0;

-			for (year = EPOCH_YEAR; year <= 2037; ++year) {

-				starttime = transtime(janfirst, year, &start,

-					stdoffset);

-				endtime = transtime(janfirst, year, &end,

-					dstoffset);

-				if (starttime > endtime) {

-					*atp++ = endtime;

-					*typep++ = 1;	/* DST ends */

-					*atp++ = starttime;

-					*typep++ = 0;	/* DST begins */

-				} else {

-					*atp++ = starttime;

-					*typep++ = 0;	/* DST begins */

-					*atp++ = endtime;

-					*typep++ = 1;	/* DST ends */

-				}

-				janfirst += year_lengths[isleap(year)] *

-					SECSPERDAY;

-			}

-		} else {

-			register long	theirstdoffset;

-			register long	theirdstoffset;

-			register long	theiroffset;

-			register int	isdst;

-			register int	i;

-			register int	j;

-

-			if (*name != '\0')

-				return -1;

-			/*

-			** Initial values of theirstdoffset and theirdstoffset.

-			*/

-			theirstdoffset = 0;

-			for (i = 0; i < sp->timecnt; ++i) {

-				j = sp->types[i];

-				if (!sp->ttis[j].tt_isdst) {

-					theirstdoffset =

-						-sp->ttis[j].tt_gmtoff;

-					break;

-				}

-			}

-			theirdstoffset = 0;

-			for (i = 0; i < sp->timecnt; ++i) {

-				j = sp->types[i];

-				if (sp->ttis[j].tt_isdst) {

-					theirdstoffset =

-						-sp->ttis[j].tt_gmtoff;

-					break;

-				}

-			}

-			/*

-			** Initially we're assumed to be in standard time.

-			*/

-			isdst = FALSE;

-			theiroffset = theirstdoffset;

-			/*

-			** Now juggle transition times and types

-			** tracking offsets as you do.

-			*/

-			for (i = 0; i < sp->timecnt; ++i) {

-				j = sp->types[i];

-				sp->types[i] = sp->ttis[j].tt_isdst;

-				if (sp->ttis[j].tt_ttisgmt) {

-					/* No adjustment to transition time */

-				} else {

-					/*

-					** If summer time is in effect, and the

-					** transition time was not specified as

-					** standard time, add the summer time

-					** offset to the transition time;

-					** otherwise, add the standard time

-					** offset to the transition time.

-					*/

-					/*

-					** Transitions from DST to DDST

-					** will effectively disappear since

-					** POSIX provides for only one DST

-					** offset.

-					*/

-					if (isdst && !sp->ttis[j].tt_ttisstd) {

-						sp->ats[i] += dstoffset -

-							theirdstoffset;

-					} else {

-						sp->ats[i] += stdoffset -

-							theirstdoffset;

-					}

-				}

-				theiroffset = -sp->ttis[j].tt_gmtoff;

-				if (sp->ttis[j].tt_isdst)

-					theirdstoffset = theiroffset;

-				else	theirstdoffset = theiroffset;

-			}

-			/*

-			** Finally, fill in ttis.

-			** ttisstd and ttisgmt need not be handled.

-			*/

-			sp->ttis[0].tt_gmtoff = -stdoffset;

-			sp->ttis[0].tt_isdst = FALSE;

-			sp->ttis[0].tt_abbrind = 0;

-			sp->ttis[1].tt_gmtoff = -dstoffset;

-			sp->ttis[1].tt_isdst = TRUE;

-			sp->ttis[1].tt_abbrind = stdlen + 1;

-			sp->typecnt = 2;

-		}

-	} else {

-		dstlen = 0;

-		sp->typecnt = 1;		/* only standard time */

-		sp->timecnt = 0;

-		sp->ttis[0].tt_gmtoff = -stdoffset;

-		sp->ttis[0].tt_isdst = 0;

-		sp->ttis[0].tt_abbrind = 0;

-	}

-	sp->charcnt = stdlen + 1;

-	if (dstlen != 0)

-		sp->charcnt += dstlen + 1;

-	if ((size_t) sp->charcnt > sizeof sp->chars)

-		return -1;

-	cp = sp->chars;

-	(void) strncpy(cp, stdname, stdlen);

-	cp += stdlen;

-	*cp++ = '\0';

-	if (dstlen != 0) {

-		(void) strncpy(cp, dstname, dstlen);

-		*(cp + dstlen) = '\0';

-	}

-	return 0;

-}

-

-static void

-gmtload(sp)

-struct state * const	sp;

-{

-	if (tzload(gmt, sp) != 0)

-		(void) tzparse(gmt, sp, TRUE);

-}

-

-#ifndef STD_INSPIRED

-/*

-** A non-static declaration of tzsetwall in a system header file

-** may cause a warning about this upcoming static declaration...

-*/

-static

-#endif /* !defined STD_INSPIRED */

-void

-tzsetwall P((void))

-{

-	if (lcl_is_set < 0)

-		return;

-	lcl_is_set = -1;

-

-#ifdef ALL_STATE

-	if (lclptr == NULL) {

-		lclptr = (struct state *) malloc(sizeof *lclptr);

-		if (lclptr == NULL) {

-			settzname();	/* all we can do */

-			return;

-		}

-	}

-#endif /* defined ALL_STATE */

-	if (tzload((char *) NULL, lclptr) != 0)

-		gmtload(lclptr);

-	settzname();

-}

-

-void

-tzset P((void))

-{

-	register const char *	name;

-

-	name = getenv("TZ");

-	if (name == NULL) {

-		tzsetwall();

-		return;

-	}

-

-	if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)

-		return;

-	lcl_is_set = strlen(name) < sizeof lcl_TZname;

-	if (lcl_is_set)

-		(void) strcpy(lcl_TZname, name);

-

-#ifdef ALL_STATE

-	if (lclptr == NULL) {

-		lclptr = (struct state *) malloc(sizeof *lclptr);

-		if (lclptr == NULL) {

-			settzname();	/* all we can do */

-			return;

-		}

-	}

-#endif /* defined ALL_STATE */

-	if (*name == '\0') {

-		/*

-		** User wants it fast rather than right.

-		*/

-		lclptr->leapcnt = 0;		/* so, we're off a little */

-		lclptr->timecnt = 0;

-		lclptr->typecnt = 0;

-		lclptr->ttis[0].tt_isdst = 0;

-		lclptr->ttis[0].tt_gmtoff = 0;

-		lclptr->ttis[0].tt_abbrind = 0;

-		(void) strcpy(lclptr->chars, gmt);

-	} else if (tzload(name, lclptr) != 0)

-		if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)

-			(void) gmtload(lclptr);

-	settzname();

-}

-

-/*

-** The easy way to behave "as if no library function calls" localtime

-** is to not call it--so we drop its guts into "localsub", which can be

-** freely called.  (And no, the PANS doesn't require the above behavior--

-** but it *is* desirable.)

-**

-** The unused offset argument is for the benefit of mktime variants.

-*/

-

-/*ARGSUSED*/

-static void

-localsub(timep, offset, tmp)

-const time_t * const	timep;

-const long		offset;

-struct tm * const	tmp;

-{

-	register struct state *		sp;

-	register const struct ttinfo *	ttisp;

-	register int			i;

-	const time_t			t = *timep;

-

-	sp = lclptr;

-#ifdef ALL_STATE

-	if (sp == NULL) {

-		gmtsub(timep, offset, tmp);

-		return;

-	}

-#endif /* defined ALL_STATE */

-	if (sp->timecnt == 0 || t < sp->ats[0]) {

-		i = 0;

-		while (sp->ttis[i].tt_isdst)

-			if (++i >= sp->typecnt) {

-				i = 0;

-				break;

-			}

-	} else {

-		for (i = 1; i < sp->timecnt; ++i)

-			if (t < sp->ats[i])

-				break;

-		i = sp->types[i - 1];

-	}

-	ttisp = &sp->ttis[i];

-	/*

-	** To get (wrong) behavior that's compatible with System V Release 2.0

-	** you'd replace the statement below with

-	**	t += ttisp->tt_gmtoff;

-	**	timesub(&t, 0L, sp, tmp);

-	*/

-	timesub(&t, ttisp->tt_gmtoff, sp, tmp);

-	tmp->tm_isdst = ttisp->tt_isdst;

-	tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];

-#ifdef TM_ZONE

-	tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];

-#endif /* defined TM_ZONE */

-}

-

-struct tm *

-localtime(timep)

-const time_t * const	timep;

-{

-	tzset();

-	localsub(timep, 0L, &tm);

-	return &tm;

-}

-

-/*

-** Re-entrant version of localtime.

-*/

-

-struct tm *

-localtime_r(timep, tm)

-const time_t * const	timep;

-struct tm *		tm;

-{

-	localsub(timep, 0L, tm);

-	return tm;

-}

-

-/*

-** gmtsub is to gmtime as localsub is to localtime.

-*/

-

-static void

-gmtsub(timep, offset, tmp)

-const time_t * const	timep;

-const long		offset;

-struct tm * const	tmp;

-{

-	if (!gmt_is_set) {

-		gmt_is_set = TRUE;

-#ifdef ALL_STATE

-		gmtptr = (struct state *) malloc(sizeof *gmtptr);

-		if (gmtptr != NULL)

-#endif /* defined ALL_STATE */

-			gmtload(gmtptr);

-	}

-	timesub(timep, offset, gmtptr, tmp);

-#ifdef TM_ZONE

-	/*

-	** Could get fancy here and deliver something such as

-	** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,

-	** but this is no time for a treasure hunt.

-	*/

-	if (offset != 0)

-		tmp->TM_ZONE = wildabbr;

-	else {

-#ifdef ALL_STATE

-		if (gmtptr == NULL)

-			tmp->TM_ZONE = gmt;

-		else	tmp->TM_ZONE = gmtptr->chars;

-#endif /* defined ALL_STATE */

-#ifndef ALL_STATE

-		tmp->TM_ZONE = gmtptr->chars;

-#endif /* State Farm */

-	}

-#endif /* defined TM_ZONE */

-}

-

-struct tm *

-gmtime(timep)

-const time_t * const	timep;

-{

-	gmtsub(timep, 0L, &tm);

-	return &tm;

-}

-

-/*

-* Re-entrant version of gmtime.

-*/

-

-struct tm *

-gmtime_r(timep, tm)

-const time_t * const	timep;

-struct tm *		tm;

-{

-	gmtsub(timep, 0L, tm);

-	return tm;

-}

-

-#ifdef STD_INSPIRED

-

-struct tm *

-offtime(timep, offset)

-const time_t * const	timep;

-const long		offset;

-{

-	gmtsub(timep, offset, &tm);

-	return &tm;

-}

-

-#endif /* defined STD_INSPIRED */

-

-static void

-timesub(timep, offset, sp, tmp)

-const time_t * const			timep;

-const long				offset;

-register const struct state * const	sp;

-register struct tm * const		tmp;

-{

-	register const struct lsinfo *	lp;

-	register long			days;

-	register long			rem;

-	register int			y;

-	register int			yleap;

-	register const int *		ip;

-	register long			corr;

-	register int			hit;

-	register int			i;

-

-	corr = 0;

-	hit = 0;

-#ifdef ALL_STATE

-	i = (sp == NULL) ? 0 : sp->leapcnt;

-#endif /* defined ALL_STATE */

-#ifndef ALL_STATE

-	i = sp->leapcnt;

-#endif /* State Farm */

-	while (--i >= 0) {

-		lp = &sp->lsis[i];

-		if (*timep >= lp->ls_trans) {

-			if (*timep == lp->ls_trans) {

-				hit = ((i == 0 && lp->ls_corr > 0) ||

-					lp->ls_corr > sp->lsis[i - 1].ls_corr);

-				if (hit)

-					while (i > 0 &&

-						sp->lsis[i].ls_trans ==

-						sp->lsis[i - 1].ls_trans + 1 &&

-						sp->lsis[i].ls_corr ==

-						sp->lsis[i - 1].ls_corr + 1) {

-							++hit;

-							--i;

-					}

-			}

-			corr = lp->ls_corr;

-			break;

-		}

-	}

-	days = *timep / SECSPERDAY;

-	rem = *timep % SECSPERDAY;

-#ifdef mc68k

-	if (*timep == 0x80000000) {

-		/*

-		** A 3B1 muffs the division on the most negative number.

-		*/

-		days = -24855;

-		rem = -11648;

-	}

-#endif /* defined mc68k */

-	rem += (offset - corr);

-	while (rem < 0) {

-		rem += SECSPERDAY;

-		--days;

-	}

-	while (rem >= SECSPERDAY) {

-		rem -= SECSPERDAY;

-		++days;

-	}

-	tmp->tm_hour = (int) (rem / SECSPERHOUR);

-	rem = rem % SECSPERHOUR;

-	tmp->tm_min = (int) (rem / SECSPERMIN);

-	/*

-	** A positive leap second requires a special

-	** representation.  This uses "... ??:59:60" et seq.

-	*/

-	tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;

-	tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);

-	if (tmp->tm_wday < 0)

-		tmp->tm_wday += DAYSPERWEEK;

-	y = EPOCH_YEAR;

-#define LEAPS_THRU_END_OF(y)	((y) / 4 - (y) / 100 + (y) / 400)

-	while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) {

-		register int	newy;

-

-		newy = y + days / DAYSPERNYEAR;

-		if (days < 0)

-			--newy;

-		days -= (newy - y) * DAYSPERNYEAR +

-			LEAPS_THRU_END_OF(newy - 1) -

-			LEAPS_THRU_END_OF(y - 1);

-		y = newy;

-	}

-	tmp->tm_year = y - TM_YEAR_BASE;

-	tmp->tm_yday = (int) days;

-	ip = mon_lengths[yleap];

-	for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))

-		days = days - (long) ip[tmp->tm_mon];

-	tmp->tm_mday = (int) (days + 1);

-	tmp->tm_isdst = 0;

-#ifdef TM_GMTOFF

-	tmp->TM_GMTOFF = offset;

-#endif /* defined TM_GMTOFF */

-}

-

-char *

-ctime(timep)

-const time_t * const	timep;

-{

-/*

-** Section 4.12.3.2 of X3.159-1989 requires that

-**	The ctime function converts the calendar time pointed to by timer

-**	to local time in the form of a string.  It is equivalent to

-**		asctime(localtime(timer))

-*/

-	return asctime(localtime(timep));

-}

-

-char *

-ctime_r(timep, buf)

-const time_t * const	timep;

-char *			buf;

-{

-	struct tm	tm;

-

-	return asctime_r(localtime_r(timep, &tm), buf);

-}

-

-/*

-** Adapted from code provided by Robert Elz, who writes:

-**	The "best" way to do mktime I think is based on an idea of Bob

-**	Kridle's (so its said...) from a long time ago.

-**	[kridle@xinet.com as of 1996-01-16.]

-**	It does a binary search of the time_t space.  Since time_t's are

-**	just 32 bits, its a max of 32 iterations (even at 64 bits it

-**	would still be very reasonable).

-*/

-

-#ifndef WRONG

-#define WRONG	(-1)

-#endif /* !defined WRONG */

-

-/*

-** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com).

-*/

-

-static int

-increment_overflow(number, delta)

-int *	number;

-int	delta;

-{

-	int	number0;

-

-	number0 = *number;

-	*number += delta;

-	return (*number < number0) != (delta < 0);

-}

-

-static int

-normalize_overflow(tensptr, unitsptr, base)

-int * const	tensptr;

-int * const	unitsptr;

-const int	base;

-{

-	register int	tensdelta;

-

-	tensdelta = (*unitsptr >= 0) ?

-		(*unitsptr / base) :

-		(-1 - (-1 - *unitsptr) / base);

-	*unitsptr -= tensdelta * base;

-	return increment_overflow(tensptr, tensdelta);

-}

-

-static int

-tmcomp(atmp, btmp)

-register const struct tm * const atmp;

-register const struct tm * const btmp;

-{

-	register int	result;

-

-	if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&

-		(result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&

-		(result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&

-		(result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&

-		(result = (atmp->tm_min - btmp->tm_min)) == 0)

-			result = atmp->tm_sec - btmp->tm_sec;

-	return result;

-}

-

-static time_t

-time2sub(tmp, funcp, offset, okayp, do_norm_secs)

-struct tm * const	tmp;

-void (* const		funcp) P((const time_t*, long, struct tm*));

-const long		offset;

-int * const		okayp;

-const int		do_norm_secs;

-{

-	register const struct state *	sp;

-	register int			dir;

-	register int			bits;

-	register int			i, j ;

-	register int			saved_seconds;

-	time_t				newt;

-	time_t				t;

-	struct tm			yourtm, mytm;

-

-	*okayp = FALSE;

-	yourtm = *tmp;

-	if (do_norm_secs) {

-		if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,

-			SECSPERMIN))

-				return WRONG;

-	}

-	if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))

-		return WRONG;

-	if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))

-		return WRONG;

-	if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR))

-		return WRONG;

-	/*

-	** Turn yourtm.tm_year into an actual year number for now.

-	** It is converted back to an offset from TM_YEAR_BASE later.

-	*/

-	if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE))

-		return WRONG;

-	while (yourtm.tm_mday <= 0) {

-		if (increment_overflow(&yourtm.tm_year, -1))

-			return WRONG;

-		i = yourtm.tm_year + (1 < yourtm.tm_mon);

-		yourtm.tm_mday += year_lengths[isleap(i)];

-	}

-	while (yourtm.tm_mday > DAYSPERLYEAR) {

-		i = yourtm.tm_year + (1 < yourtm.tm_mon);

-		yourtm.tm_mday -= year_lengths[isleap(i)];

-		if (increment_overflow(&yourtm.tm_year, 1))

-			return WRONG;

-	}

-	for ( ; ; ) {

-		i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon];

-		if (yourtm.tm_mday <= i)

-			break;

-		yourtm.tm_mday -= i;

-		if (++yourtm.tm_mon >= MONSPERYEAR) {

-			yourtm.tm_mon = 0;

-			if (increment_overflow(&yourtm.tm_year, 1))

-				return WRONG;

-		}

-	}

-	if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE))

-		return WRONG;

-	if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)

-		saved_seconds = 0;

-	else if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) {

-		/*

-		** We can't set tm_sec to 0, because that might push the

-		** time below the minimum representable time.

-		** Set tm_sec to 59 instead.

-		** This assumes that the minimum representable time is

-		** not in the same minute that a leap second was deleted from,

-		** which is a safer assumption than using 58 would be.

-		*/

-		if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))

-			return WRONG;

-		saved_seconds = yourtm.tm_sec;

-		yourtm.tm_sec = SECSPERMIN - 1;

-	} else {

-		saved_seconds = yourtm.tm_sec;

-		yourtm.tm_sec = 0;

-	}

-	/*

-	** Divide the search space in half

-	** (this works whether time_t is signed or unsigned).

-	*/

-	bits = TYPE_BIT(time_t) - 1;

-	/*

-	** If time_t is signed, then 0 is just above the median,

-	** assuming two's complement arithmetic.

-	** If time_t is unsigned, then (1 << bits) is just above the median.

-	*/

-	t = TYPE_SIGNED(time_t) ? 0 : (((time_t) 1) << bits);

-	for ( ; ; ) {

-		(*funcp)(&t, offset, &mytm);

-		dir = tmcomp(&mytm, &yourtm);

-		if (dir != 0) {

-			if (bits-- < 0)

-				return WRONG;

-			if (bits < 0)

-				--t; /* may be needed if new t is minimal */

-			else if (dir > 0)

-				t -= ((time_t) 1) << bits;

-			else	t += ((time_t) 1) << bits;

-			continue;

-		}

-		if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)

-			break;

-		/*

-		** Right time, wrong type.

-		** Hunt for right time, right type.

-		** It's okay to guess wrong since the guess

-		** gets checked.

-		*/

-		/*

-		** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.

-		*/

-		sp = (const struct state *)

-			(((void *) funcp == (void *) localsub) ?

-			lclptr : gmtptr);

-#ifdef ALL_STATE

-		if (sp == NULL)

-			return WRONG;

-#endif /* defined ALL_STATE */

-		for (i = sp->typecnt - 1; i >= 0; --i) {

-			if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)

-				continue;

-			for (j = sp->typecnt - 1; j >= 0; --j) {

-				if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)

-					continue;

-				newt = t + sp->ttis[j].tt_gmtoff -

-					sp->ttis[i].tt_gmtoff;

-				(*funcp)(&newt, offset, &mytm);

-				if (tmcomp(&mytm, &yourtm) != 0)

-					continue;

-				if (mytm.tm_isdst != yourtm.tm_isdst)

-					continue;

-				/*

-				** We have a match.

-				*/

-				t = newt;

-				goto label;

-			}

-		}

-		return WRONG;

-	}

-label:

-	newt = t + saved_seconds;

-	if ((newt < t) != (saved_seconds < 0))

-		return WRONG;

-	t = newt;

-	(*funcp)(&t, offset, tmp);

-	*okayp = TRUE;

-	return t;

-}

-

-static time_t

-time2(tmp, funcp, offset, okayp)

-struct tm * const	tmp;

-void (* const		funcp) P((const time_t*, long, struct tm*));

-const long		offset;

-int * const		okayp;

-{

-	time_t	t;

-

-	/*

-	** First try without normalization of seconds

-	** (in case tm_sec contains a value associated with a leap second).

-	** If that fails, try with normalization of seconds.

-	*/

-	t = time2sub(tmp, funcp, offset, okayp, FALSE);

-	return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE);

-}

-

-static time_t

-time1(tmp, funcp, offset)

-struct tm * const	tmp;

-void (* const		funcp) P((const time_t *, long, struct tm *));

-const long		offset;

-{

-	register time_t			t;

-	register const struct state *	sp;

-	register int			samei, otheri;

-	register int			sameind, otherind;

-	register int			i;

-	register int			nseen;

-	int				seen[TZ_MAX_TYPES];

-	int				types[TZ_MAX_TYPES];

-	int				okay;

-

-	if (tmp->tm_isdst > 1)

-		tmp->tm_isdst = 1;

-	t = time2(tmp, funcp, offset, &okay);

-#ifdef PCTS

-	/*

-	** PCTS code courtesy Grant Sullivan (grant@osf.org).

-	*/

-	if (okay)

-		return t;

-	if (tmp->tm_isdst < 0)

-		tmp->tm_isdst = 0;	/* reset to std and try again */

-#endif /* defined PCTS */

-#ifndef PCTS

-	if (okay || tmp->tm_isdst < 0)

-		return t;

-#endif /* !defined PCTS */

-	/*

-	** We're supposed to assume that somebody took a time of one type

-	** and did some math on it that yielded a "struct tm" that's bad.

-	** We try to divine the type they started from and adjust to the

-	** type they need.

-	*/

-	/*

-	** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.

-	*/

-	sp = (const struct state *) (((void *) funcp == (void *) localsub) ?

-		lclptr : gmtptr);

-#ifdef ALL_STATE

-	if (sp == NULL)

-		return WRONG;

-#endif /* defined ALL_STATE */

-	for (i = 0; i < sp->typecnt; ++i)

-		seen[i] = FALSE;

-	nseen = 0;

-	for (i = sp->timecnt - 1; i >= 0; --i)

-		if (!seen[sp->types[i]]) {

-			seen[sp->types[i]] = TRUE;

-			types[nseen++] = sp->types[i];

-		}

-	for (sameind = 0; sameind < nseen; ++sameind) {

-		samei = types[sameind];

-		if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)

-			continue;

-		for (otherind = 0; otherind < nseen; ++otherind) {

-			otheri = types[otherind];

-			if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)

-				continue;

-			tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -

-					sp->ttis[samei].tt_gmtoff;

-			tmp->tm_isdst = !tmp->tm_isdst;

-			t = time2(tmp, funcp, offset, &okay);

-			if (okay)

-				return t;

-			tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -

-					sp->ttis[samei].tt_gmtoff;

-			tmp->tm_isdst = !tmp->tm_isdst;

-		}

-	}

-	return WRONG;

-}

-

-time_t

-mktime(tmp)

-struct tm * const	tmp;

-{

-	tzset();

-	return time1(tmp, localsub, 0L);

-}

-

-#ifdef STD_INSPIRED

-

-time_t

-timelocal(tmp)

-struct tm * const	tmp;

-{

-	tmp->tm_isdst = -1;	/* in case it wasn't initialized */

-	return mktime(tmp);

-}

-

-time_t

-timegm(tmp)

-struct tm * const	tmp;

-{

-	tmp->tm_isdst = 0;

-	return time1(tmp, gmtsub, 0L);

-}

-

-time_t

-timeoff(tmp, offset)

-struct tm * const	tmp;

-const long		offset;

-{

-	tmp->tm_isdst = 0;

-	return time1(tmp, gmtsub, offset);

-}

-

-#endif /* defined STD_INSPIRED */

-

-#ifdef CMUCS

-

-/*

-** The following is supplied for compatibility with

-** previous versions of the CMUCS runtime library.

-*/

-

-long

-gtime(tmp)

-struct tm * const	tmp;

-{

-	const time_t	t = mktime(tmp);

-

-	if (t == WRONG)

-		return -1;

-	return t;

-}

-

-#endif /* defined CMUCS */

-

-/*

-** XXX--is the below the right way to conditionalize??

-*/

-

-#ifdef STD_INSPIRED

-

-/*

-** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599

-** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which

-** is not the case if we are accounting for leap seconds.

-** So, we provide the following conversion routines for use

-** when exchanging timestamps with POSIX conforming systems.

-*/

-

-static long

-leapcorr(timep)

-time_t *	timep;

-{

-	register struct state *		sp;

-	register struct lsinfo *	lp;

-	register int			i;

-

-	sp = lclptr;

-	i = sp->leapcnt;

-	while (--i >= 0) {

-		lp = &sp->lsis[i];

-		if (*timep >= lp->ls_trans)

-			return lp->ls_corr;

-	}

-	return 0;

-}

-

-time_t

-time2posix(t)

-time_t	t;

-{

-	tzset();

-	return t - leapcorr(&t);

-}

-

-time_t

-posix2time(t)

-time_t	t;

-{

-	time_t	x;

-	time_t	y;

-

-	tzset();

-	/*

-	** For a positive leap second hit, the result

-	** is not unique.  For a negative leap second

-	** hit, the corresponding time doesn't exist,

-	** so we return an adjacent second.

-	*/

-	x = t + leapcorr(&t);

-	y = x - leapcorr(&x);

-	if (y < t) {

-		do {

-			x++;

-			y = x - leapcorr(&x);

-		} while (y < t);

-		if (t != y)

-			return x - 1;

-	} else if (y > t) {

-		do {

-			--x;

-			y = x - leapcorr(&x);

-		} while (y > t);

-		if (t != y)

-			return x + 1;

-	}

-	return x;

-}

-

-#endif /* defined STD_INSPIRED */

+#include "pgtz.h"
+#undef open
+#define timezone pg_timezone
+#define USG_COMPAT
+extern time_t pg_timezone;
+/*
+** This file is in the public domain, so clarified as of
+** 1996-06-05 by Arthur David Olson (arthur_david_olson@nih.gov).
+*/
+
+#ifndef lint
+#ifndef NOID
+static char	elsieid[] = "@(#)localtime.c	7.78";
+#endif /* !defined NOID */
+#endif /* !defined lint */
+
+/*
+** Leap second handling from Bradley White (bww@k.gp.cs.cmu.edu).
+** POSIX-style TZ environment variable handling from Guy Harris
+** (guy@auspex.com).
+*/
+
+/*LINTLIBRARY*/
+
+#include "private.h"
+#include "tzfile.h"
+#include "fcntl.h"
+
+/*
+** SunOS 4.1.1 headers lack O_BINARY.
+*/
+
+#ifdef O_BINARY
+#define OPEN_MODE	(O_RDONLY | O_BINARY)
+#endif /* defined O_BINARY */
+#ifndef O_BINARY
+#define OPEN_MODE	O_RDONLY
+#endif /* !defined O_BINARY */
+
+#ifndef WILDABBR
+/*
+** Someone might make incorrect use of a time zone abbreviation:
+**	1.	They might reference tzname[0] before calling tzset (explicitly
+**		or implicitly).
+**	2.	They might reference tzname[1] before calling tzset (explicitly
+**		or implicitly).
+**	3.	They might reference tzname[1] after setting to a time zone
+**		in which Daylight Saving Time is never observed.
+**	4.	They might reference tzname[0] after setting to a time zone
+**		in which Standard Time is never observed.
+**	5.	They might reference tm.TM_ZONE after calling offtime.
+** What's best to do in the above cases is open to debate;
+** for now, we just set things up so that in any of the five cases
+** WILDABBR is used.  Another possibility:  initialize tzname[0] to the
+** string "tzname[0] used before set", and similarly for the other cases.
+** And another:  initialize tzname[0] to "ERA", with an explanation in the
+** manual page of what this "time zone abbreviation" means (doing this so
+** that tzname[0] has the "normal" length of three characters).
+*/
+#define WILDABBR	"   "
+#endif /* !defined WILDABBR */
+
+static char		wildabbr[] = "WILDABBR";
+
+static const char	gmt[] = "GMT";
+
+/*
+** The DST rules to use if TZ has no rules and we can't load TZDEFRULES.
+** We default to US rules as of 1999-08-17.
+** POSIX 1003.1 section 8.1.1 says that the default DST rules are
+** implementation dependent; for historical reasons, US rules are a
+** common default.
+*/
+#ifndef TZDEFRULESTRING
+#define TZDEFRULESTRING ",M4.1.0,M10.5.0"
+#endif /* !defined TZDEFDST */
+
+struct ttinfo {				/* time type information */
+	long		tt_gmtoff;	/* UTC offset in seconds */
+	int		tt_isdst;	/* used to set tm_isdst */
+	int		tt_abbrind;	/* abbreviation list index */
+	int		tt_ttisstd;	/* TRUE if transition is std time */
+	int		tt_ttisgmt;	/* TRUE if transition is UTC */
+};
+
+struct lsinfo {				/* leap second information */
+	time_t		ls_trans;	/* transition time */
+	long		ls_corr;	/* correction to apply */
+};
+
+#define BIGGEST(a, b)	(((a) > (b)) ? (a) : (b))
+
+#ifdef TZNAME_MAX
+#define MY_TZNAME_MAX	TZNAME_MAX
+#endif /* defined TZNAME_MAX */
+#ifndef TZNAME_MAX
+#define MY_TZNAME_MAX	255
+#endif /* !defined TZNAME_MAX */
+
+struct state {
+	int		leapcnt;
+	int		timecnt;
+	int		typecnt;
+	int		charcnt;
+	time_t		ats[TZ_MAX_TIMES];
+	unsigned char	types[TZ_MAX_TIMES];
+	struct ttinfo	ttis[TZ_MAX_TYPES];
+	char		chars[BIGGEST(BIGGEST(TZ_MAX_CHARS + 1, sizeof gmt),
+				(2 * (MY_TZNAME_MAX + 1)))];
+	struct lsinfo	lsis[TZ_MAX_LEAPS];
+};
+
+struct rule {
+	int		r_type;		/* type of rule--see below */
+	int		r_day;		/* day number of rule */
+	int		r_week;		/* week number of rule */
+	int		r_mon;		/* month number of rule */
+	long		r_time;		/* transition time of rule */
+};
+
+#define JULIAN_DAY		0	/* Jn - Julian day */
+#define DAY_OF_YEAR		1	/* n - day of year */
+#define MONTH_NTH_DAY_OF_WEEK	2	/* Mm.n.d - month, week, day of week */
+
+/*
+** Prototypes for static functions.
+*/
+
+static long		detzcode P((const char * codep));
+static const char *	getzname P((const char * strp));
+static const char *	getnum P((const char * strp, int * nump, int min,
+				int max));
+static const char *	getsecs P((const char * strp, long * secsp));
+static const char *	getoffset P((const char * strp, long * offsetp));
+static const char *	getrule P((const char * strp, struct rule * rulep));
+static void		gmtload P((struct state * sp));
+static void		gmtsub P((const time_t * timep, long offset,
+				struct tm * tmp));
+static void		localsub P((const time_t * timep, long offset,
+				struct tm * tmp));
+static int		increment_overflow P((int * number, int delta));
+static int		normalize_overflow P((int * tensptr, int * unitsptr,
+				int base));
+static void		settzname P((void));
+static time_t		time1 P((struct tm * tmp,
+				void(*funcp) P((const time_t *,
+				long, struct tm *)),
+				long offset));
+static time_t		time2 P((struct tm *tmp,
+				void(*funcp) P((const time_t *,
+				long, struct tm*)),
+				long offset, int * okayp));
+static time_t		time2sub P((struct tm *tmp,
+				void(*funcp) P((const time_t *,
+				long, struct tm*)),
+				long offset, int * okayp, int do_norm_secs));
+static void		timesub P((const time_t * timep, long offset,
+				const struct state * sp, struct tm * tmp));
+static int		tmcomp P((const struct tm * atmp,
+				const struct tm * btmp));
+static time_t		transtime P((time_t janfirst, int year,
+				const struct rule * rulep, long offset));
+static int		tzload P((const char * name, struct state * sp));
+static int		tzparse P((const char * name, struct state * sp,
+				int lastditch));
+
+#ifdef ALL_STATE
+static struct state *	lclptr;
+static struct state *	gmtptr;
+#endif /* defined ALL_STATE */
+
+#ifndef ALL_STATE
+static struct state	lclmem;
+static struct state	gmtmem;
+#define lclptr		(&lclmem)
+#define gmtptr		(&gmtmem)
+#endif /* State Farm */
+
+#ifndef TZ_STRLEN_MAX
+#define TZ_STRLEN_MAX 255
+#endif /* !defined TZ_STRLEN_MAX */
+
+static char		lcl_TZname[TZ_STRLEN_MAX + 1];
+static int		lcl_is_set;
+static int		gmt_is_set;
+
+char *			tzname[2] = {
+	wildabbr,
+	wildabbr
+};
+
+/*
+** Section 4.12.3 of X3.159-1989 requires that
+**	Except for the strftime function, these functions [asctime,
+**	ctime, gmtime, localtime] return values in one of two static
+**	objects: a broken-down time structure and an array of char.
+** Thanks to Paul Eggert (eggert@twinsun.com) for noting this.
+*/
+
+static struct tm	tm;
+
+#ifdef USG_COMPAT
+time_t			timezone = 0;
+int			daylight = 0;
+#endif /* defined USG_COMPAT */
+
+#ifdef ALTZONE
+time_t			altzone = 0;
+#endif /* defined ALTZONE */
+
+static long
+detzcode(codep)
+const char * const	codep;
+{
+	register long	result;
+	register int	i;
+
+	result = (codep[0] & 0x80) ? ~0L : 0L;
+	for (i = 0; i < 4; ++i)
+		result = (result << 8) | (codep[i] & 0xff);
+	return result;
+}
+
+static void
+settzname P((void))
+{
+	register struct state * const	sp = lclptr;
+	register int			i;
+
+	tzname[0] = wildabbr;
+	tzname[1] = wildabbr;
+#ifdef USG_COMPAT
+	daylight = 0;
+	timezone = 0;
+#endif /* defined USG_COMPAT */
+#ifdef ALTZONE
+	altzone = 0;
+#endif /* defined ALTZONE */
+#ifdef ALL_STATE
+	if (sp == NULL) {
+		tzname[0] = tzname[1] = gmt;
+		return;
+	}
+#endif /* defined ALL_STATE */
+	for (i = 0; i < sp->typecnt; ++i) {
+		register const struct ttinfo * const	ttisp = &sp->ttis[i];
+
+		tzname[ttisp->tt_isdst] =
+			&sp->chars[ttisp->tt_abbrind];
+#ifdef USG_COMPAT
+		if (ttisp->tt_isdst)
+			daylight = 1;
+		if (i == 0 || !ttisp->tt_isdst)
+			timezone = -(ttisp->tt_gmtoff);
+#endif /* defined USG_COMPAT */
+#ifdef ALTZONE
+		if (i == 0 || ttisp->tt_isdst)
+			altzone = -(ttisp->tt_gmtoff);
+#endif /* defined ALTZONE */
+	}
+	/*
+	** And to get the latest zone names into tzname. . .
+	*/
+	for (i = 0; i < sp->timecnt; ++i) {
+		register const struct ttinfo * const	ttisp =
+							&sp->ttis[
+								sp->types[i]];
+
+		tzname[ttisp->tt_isdst] =
+			&sp->chars[ttisp->tt_abbrind];
+	}
+}
+
+static int
+tzload(name, sp)
+register const char *		name;
+register struct state * const	sp;
+{
+	register const char *	p;
+	register int		i;
+	register int		fid;
+
+	if (name == NULL && (name = TZDEFAULT) == NULL)
+		return -1;
+	{
+		register int	doaccess;
+		/*
+		** Section 4.9.1 of the C standard says that
+		** "FILENAME_MAX expands to an integral constant expression
+		** that is the size needed for an array of char large enough
+		** to hold the longest file name string that the implementation
+		** guarantees can be opened."
+		*/
+		char		fullname[FILENAME_MAX + 1];
+
+		if (name[0] == ':')
+			++name;
+		doaccess = name[0] == '/';
+		if (!doaccess) {
+			if ((p = TZDIR) == NULL)
+				return -1;
+			if ((strlen(p) + strlen(name) + 1) >= sizeof fullname)
+				return -1;
+			(void) strcpy(fullname, p);
+			(void) strcat(fullname, "/");
+			(void) strcat(fullname, name);
+			/*
+			** Set doaccess if '.' (as in "../") shows up in name.
+			*/
+			if (strchr(name, '.') != NULL)
+				doaccess = TRUE;
+			name = fullname;
+		}
+		if (doaccess && access(name, R_OK) != 0)
+			return -1;
+		if ((fid = open(name, OPEN_MODE)) == -1)
+			return -1;
+	}
+	{
+		struct tzhead *	tzhp;
+		union {
+			struct tzhead	tzhead;
+			char		buf[sizeof *sp + sizeof *tzhp];
+		} u;
+		int		ttisstdcnt;
+		int		ttisgmtcnt;
+
+		i = read(fid, u.buf, sizeof u.buf);
+		if (close(fid) != 0)
+			return -1;
+		ttisstdcnt = (int) detzcode(u.tzhead.tzh_ttisstdcnt);
+		ttisgmtcnt = (int) detzcode(u.tzhead.tzh_ttisgmtcnt);
+		sp->leapcnt = (int) detzcode(u.tzhead.tzh_leapcnt);
+		sp->timecnt = (int) detzcode(u.tzhead.tzh_timecnt);
+		sp->typecnt = (int) detzcode(u.tzhead.tzh_typecnt);
+		sp->charcnt = (int) detzcode(u.tzhead.tzh_charcnt);
+		p = u.tzhead.tzh_charcnt + sizeof u.tzhead.tzh_charcnt;
+		if (sp->leapcnt < 0 || sp->leapcnt > TZ_MAX_LEAPS ||
+			sp->typecnt <= 0 || sp->typecnt > TZ_MAX_TYPES ||
+			sp->timecnt < 0 || sp->timecnt > TZ_MAX_TIMES ||
+			sp->charcnt < 0 || sp->charcnt > TZ_MAX_CHARS ||
+			(ttisstdcnt != sp->typecnt && ttisstdcnt != 0) ||
+			(ttisgmtcnt != sp->typecnt && ttisgmtcnt != 0))
+				return -1;
+		if (i - (p - u.buf) < sp->timecnt * 4 +	/* ats */
+			sp->timecnt +			/* types */
+			sp->typecnt * (4 + 2) +		/* ttinfos */
+			sp->charcnt +			/* chars */
+			sp->leapcnt * (4 + 4) +		/* lsinfos */
+			ttisstdcnt +			/* ttisstds */
+			ttisgmtcnt)			/* ttisgmts */
+				return -1;
+		for (i = 0; i < sp->timecnt; ++i) {
+			sp->ats[i] = detzcode(p);
+			p += 4;
+		}
+		for (i = 0; i < sp->timecnt; ++i) {
+			sp->types[i] = (unsigned char) *p++;
+			if (sp->types[i] >= sp->typecnt)
+				return -1;
+		}
+		for (i = 0; i < sp->typecnt; ++i) {
+			register struct ttinfo *	ttisp;
+
+			ttisp = &sp->ttis[i];
+			ttisp->tt_gmtoff = detzcode(p);
+			p += 4;
+			ttisp->tt_isdst = (unsigned char) *p++;
+			if (ttisp->tt_isdst != 0 && ttisp->tt_isdst != 1)
+				return -1;
+			ttisp->tt_abbrind = (unsigned char) *p++;
+			if (ttisp->tt_abbrind < 0 ||
+				ttisp->tt_abbrind > sp->charcnt)
+					return -1;
+		}
+		for (i = 0; i < sp->charcnt; ++i)
+			sp->chars[i] = *p++;
+		sp->chars[i] = '\0';	/* ensure '\0' at end */
+		for (i = 0; i < sp->leapcnt; ++i) {
+			register struct lsinfo *	lsisp;
+
+			lsisp = &sp->lsis[i];
+			lsisp->ls_trans = detzcode(p);
+			p += 4;
+			lsisp->ls_corr = detzcode(p);
+			p += 4;
+		}
+		for (i = 0; i < sp->typecnt; ++i) {
+			register struct ttinfo *	ttisp;
+
+			ttisp = &sp->ttis[i];
+			if (ttisstdcnt == 0)
+				ttisp->tt_ttisstd = FALSE;
+			else {
+				ttisp->tt_ttisstd = *p++;
+				if (ttisp->tt_ttisstd != TRUE &&
+					ttisp->tt_ttisstd != FALSE)
+						return -1;
+			}
+		}
+		for (i = 0; i < sp->typecnt; ++i) {
+			register struct ttinfo *	ttisp;
+
+			ttisp = &sp->ttis[i];
+			if (ttisgmtcnt == 0)
+				ttisp->tt_ttisgmt = FALSE;
+			else {
+				ttisp->tt_ttisgmt = *p++;
+				if (ttisp->tt_ttisgmt != TRUE &&
+					ttisp->tt_ttisgmt != FALSE)
+						return -1;
+			}
+		}
+	}
+	return 0;
+}
+
+static const int	mon_lengths[2][MONSPERYEAR] = {
+	{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 },
+	{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 }
+};
+
+static const int	year_lengths[2] = {
+	DAYSPERNYEAR, DAYSPERLYEAR
+};
+
+/*
+** Given a pointer into a time zone string, scan until a character that is not
+** a valid character in a zone name is found.  Return a pointer to that
+** character.
+*/
+
+static const char *
+getzname(strp)
+register const char *	strp;
+{
+	register char	c;
+
+	while ((c = *strp) != '\0' && !is_digit(c) && c != ',' && c != '-' &&
+		c != '+')
+			++strp;
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a number from that string.
+** Check that the number is within a specified range; if it is not, return
+** NULL.
+** Otherwise, return a pointer to the first character not part of the number.
+*/
+
+static const char *
+getnum(strp, nump, min, max)
+register const char *	strp;
+int * const		nump;
+const int		min;
+const int		max;
+{
+	register char	c;
+	register int	num;
+
+	if (strp == NULL || !is_digit(c = *strp))
+		return NULL;
+	num = 0;
+	do {
+		num = num * 10 + (c - '0');
+		if (num > max)
+			return NULL;	/* illegal value */
+		c = *++strp;
+	} while (is_digit(c));
+	if (num < min)
+		return NULL;		/* illegal value */
+	*nump = num;
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a number of seconds,
+** in hh[:mm[:ss]] form, from the string.
+** If any error occurs, return NULL.
+** Otherwise, return a pointer to the first character not part of the number
+** of seconds.
+*/
+
+static const char *
+getsecs(strp, secsp)
+register const char *	strp;
+long * const		secsp;
+{
+	int	num;
+
+	/*
+	** `HOURSPERDAY * DAYSPERWEEK - 1' allows quasi-Posix rules like
+	** "M10.4.6/26", which does not conform to Posix,
+	** but which specifies the equivalent of
+	** ``02:00 on the first Sunday on or after 23 Oct''.
+	*/
+	strp = getnum(strp, &num, 0, HOURSPERDAY * DAYSPERWEEK - 1);
+	if (strp == NULL)
+		return NULL;
+	*secsp = num * (long) SECSPERHOUR;
+	if (*strp == ':') {
+		++strp;
+		strp = getnum(strp, &num, 0, MINSPERHOUR - 1);
+		if (strp == NULL)
+			return NULL;
+		*secsp += num * SECSPERMIN;
+		if (*strp == ':') {
+			++strp;
+			/* `SECSPERMIN' allows for leap seconds.  */
+			strp = getnum(strp, &num, 0, SECSPERMIN);
+			if (strp == NULL)
+				return NULL;
+			*secsp += num;
+		}
+	}
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract an offset, in
+** [+-]hh[:mm[:ss]] form, from the string.
+** If any error occurs, return NULL.
+** Otherwise, return a pointer to the first character not part of the time.
+*/
+
+static const char *
+getoffset(strp, offsetp)
+register const char *	strp;
+long * const		offsetp;
+{
+	register int	neg = 0;
+
+	if (*strp == '-') {
+		neg = 1;
+		++strp;
+	} else if (*strp == '+')
+		++strp;
+	strp = getsecs(strp, offsetp);
+	if (strp == NULL)
+		return NULL;		/* illegal time */
+	if (neg)
+		*offsetp = -*offsetp;
+	return strp;
+}
+
+/*
+** Given a pointer into a time zone string, extract a rule in the form
+** date[/time].  See POSIX section 8 for the format of "date" and "time".
+** If a valid rule is not found, return NULL.
+** Otherwise, return a pointer to the first character not part of the rule.
+*/
+
+static const char *
+getrule(strp, rulep)
+const char *			strp;
+register struct rule * const	rulep;
+{
+	if (*strp == 'J') {
+		/*
+		** Julian day.
+		*/
+		rulep->r_type = JULIAN_DAY;
+		++strp;
+		strp = getnum(strp, &rulep->r_day, 1, DAYSPERNYEAR);
+	} else if (*strp == 'M') {
+		/*
+		** Month, week, day.
+		*/
+		rulep->r_type = MONTH_NTH_DAY_OF_WEEK;
+		++strp;
+		strp = getnum(strp, &rulep->r_mon, 1, MONSPERYEAR);
+		if (strp == NULL)
+			return NULL;
+		if (*strp++ != '.')
+			return NULL;
+		strp = getnum(strp, &rulep->r_week, 1, 5);
+		if (strp == NULL)
+			return NULL;
+		if (*strp++ != '.')
+			return NULL;
+		strp = getnum(strp, &rulep->r_day, 0, DAYSPERWEEK - 1);
+	} else if (is_digit(*strp)) {
+		/*
+		** Day of year.
+		*/
+		rulep->r_type = DAY_OF_YEAR;
+		strp = getnum(strp, &rulep->r_day, 0, DAYSPERLYEAR - 1);
+	} else	return NULL;		/* invalid format */
+	if (strp == NULL)
+		return NULL;
+	if (*strp == '/') {
+		/*
+		** Time specified.
+		*/
+		++strp;
+		strp = getsecs(strp, &rulep->r_time);
+	} else	rulep->r_time = 2 * SECSPERHOUR;	/* default = 2:00:00 */
+	return strp;
+}
+
+/*
+** Given the Epoch-relative time of January 1, 00:00:00 UTC, in a year, the
+** year, a rule, and the offset from UTC at the time that rule takes effect,
+** calculate the Epoch-relative time that rule takes effect.
+*/
+
+static time_t
+transtime(janfirst, year, rulep, offset)
+const time_t				janfirst;
+const int				year;
+register const struct rule * const	rulep;
+const long				offset;
+{
+	register int	leapyear;
+	register time_t	value;
+	register int	i;
+	int		d, m1, yy0, yy1, yy2, dow;
+
+	INITIALIZE(value);
+	leapyear = isleap(year);
+	switch (rulep->r_type) {
+
+	case JULIAN_DAY:
+		/*
+		** Jn - Julian day, 1 == January 1, 60 == March 1 even in leap
+		** years.
+		** In non-leap years, or if the day number is 59 or less, just
+		** add SECSPERDAY times the day number-1 to the time of
+		** January 1, midnight, to get the day.
+		*/
+		value = janfirst + (rulep->r_day - 1) * SECSPERDAY;
+		if (leapyear && rulep->r_day >= 60)
+			value += SECSPERDAY;
+		break;
+
+	case DAY_OF_YEAR:
+		/*
+		** n - day of year.
+		** Just add SECSPERDAY times the day number to the time of
+		** January 1, midnight, to get the day.
+		*/
+		value = janfirst + rulep->r_day * SECSPERDAY;
+		break;
+
+	case MONTH_NTH_DAY_OF_WEEK:
+		/*
+		** Mm.n.d - nth "dth day" of month m.
+		*/
+		value = janfirst;
+		for (i = 0; i < rulep->r_mon - 1; ++i)
+			value += mon_lengths[leapyear][i] * SECSPERDAY;
+
+		/*
+		** Use Zeller's Congruence to get day-of-week of first day of
+		** month.
+		*/
+		m1 = (rulep->r_mon + 9) % 12 + 1;
+		yy0 = (rulep->r_mon <= 2) ? (year - 1) : year;
+		yy1 = yy0 / 100;
+		yy2 = yy0 % 100;
+		dow = ((26 * m1 - 2) / 10 +
+			1 + yy2 + yy2 / 4 + yy1 / 4 - 2 * yy1) % 7;
+		if (dow < 0)
+			dow += DAYSPERWEEK;
+
+		/*
+		** "dow" is the day-of-week of the first day of the month.  Get
+		** the day-of-month (zero-origin) of the first "dow" day of the
+		** month.
+		*/
+		d = rulep->r_day - dow;
+		if (d < 0)
+			d += DAYSPERWEEK;
+		for (i = 1; i < rulep->r_week; ++i) {
+			if (d + DAYSPERWEEK >=
+				mon_lengths[leapyear][rulep->r_mon - 1])
+					break;
+			d += DAYSPERWEEK;
+		}
+
+		/*
+		** "d" is the day-of-month (zero-origin) of the day we want.
+		*/
+		value += d * SECSPERDAY;
+		break;
+	}
+
+	/*
+	** "value" is the Epoch-relative time of 00:00:00 UTC on the day in
+	** question.  To get the Epoch-relative time of the specified local
+	** time on that day, add the transition time and the current offset
+	** from UTC.
+	*/
+	return value + rulep->r_time + offset;
+}
+
+/*
+** Given a POSIX section 8-style TZ string, fill in the rule tables as
+** appropriate.
+*/
+
+static int
+tzparse(name, sp, lastditch)
+const char *			name;
+register struct state * const	sp;
+const int			lastditch;
+{
+	const char *			stdname;
+	const char *			dstname;
+	size_t				stdlen;
+	size_t				dstlen;
+	long				stdoffset;
+	long				dstoffset;
+	register time_t *		atp;
+	register unsigned char *	typep;
+	register char *			cp;
+	register int			load_result;
+
+	INITIALIZE(dstname);
+	stdname = name;
+	if (lastditch) {
+		stdlen = strlen(name);	/* length of standard zone name */
+		name += stdlen;
+		if (stdlen >= sizeof sp->chars)
+			stdlen = (sizeof sp->chars) - 1;
+		stdoffset = 0;
+	} else {
+		name = getzname(name);
+		stdlen = name - stdname;
+		if (stdlen < 3)
+			return -1;
+		if (*name == '\0')
+			return -1;
+		name = getoffset(name, &stdoffset);
+		if (name == NULL)
+			return -1;
+	}
+	load_result = tzload(TZDEFRULES, sp);
+	if (load_result != 0)
+		sp->leapcnt = 0;		/* so, we're off a little */
+	if (*name != '\0') {
+		dstname = name;
+		name = getzname(name);
+		dstlen = name - dstname;	/* length of DST zone name */
+		if (dstlen < 3)
+			return -1;
+		if (*name != '\0' && *name != ',' && *name != ';') {
+			name = getoffset(name, &dstoffset);
+			if (name == NULL)
+				return -1;
+		} else	dstoffset = stdoffset - SECSPERHOUR;
+		if (*name == '\0' && load_result != 0)
+			name = TZDEFRULESTRING;
+		if (*name == ',' || *name == ';') {
+			struct rule	start;
+			struct rule	end;
+			register int	year;
+			register time_t	janfirst;
+			time_t		starttime;
+			time_t		endtime;
+
+			++name;
+			if ((name = getrule(name, &start)) == NULL)
+				return -1;
+			if (*name++ != ',')
+				return -1;
+			if ((name = getrule(name, &end)) == NULL)
+				return -1;
+			if (*name != '\0')
+				return -1;
+			sp->typecnt = 2;	/* standard time and DST */
+			/*
+			** Two transitions per year, from EPOCH_YEAR to 2037.
+			*/
+			sp->timecnt = 2 * (2037 - EPOCH_YEAR + 1);
+			if (sp->timecnt > TZ_MAX_TIMES)
+				return -1;
+			sp->ttis[0].tt_gmtoff = -dstoffset;
+			sp->ttis[0].tt_isdst = 1;
+			sp->ttis[0].tt_abbrind = stdlen + 1;
+			sp->ttis[1].tt_gmtoff = -stdoffset;
+			sp->ttis[1].tt_isdst = 0;
+			sp->ttis[1].tt_abbrind = 0;
+			atp = sp->ats;
+			typep = sp->types;
+			janfirst = 0;
+			for (year = EPOCH_YEAR; year <= 2037; ++year) {
+				starttime = transtime(janfirst, year, &start,
+					stdoffset);
+				endtime = transtime(janfirst, year, &end,
+					dstoffset);
+				if (starttime > endtime) {
+					*atp++ = endtime;
+					*typep++ = 1;	/* DST ends */
+					*atp++ = starttime;
+					*typep++ = 0;	/* DST begins */
+				} else {
+					*atp++ = starttime;
+					*typep++ = 0;	/* DST begins */
+					*atp++ = endtime;
+					*typep++ = 1;	/* DST ends */
+				}
+				janfirst += year_lengths[isleap(year)] *
+					SECSPERDAY;
+			}
+		} else {
+			register long	theirstdoffset;
+			register long	theirdstoffset;
+			register long	theiroffset;
+			register int	isdst;
+			register int	i;
+			register int	j;
+
+			if (*name != '\0')
+				return -1;
+			/*
+			** Initial values of theirstdoffset and theirdstoffset.
+			*/
+			theirstdoffset = 0;
+			for (i = 0; i < sp->timecnt; ++i) {
+				j = sp->types[i];
+				if (!sp->ttis[j].tt_isdst) {
+					theirstdoffset =
+						-sp->ttis[j].tt_gmtoff;
+					break;
+				}
+			}
+			theirdstoffset = 0;
+			for (i = 0; i < sp->timecnt; ++i) {
+				j = sp->types[i];
+				if (sp->ttis[j].tt_isdst) {
+					theirdstoffset =
+						-sp->ttis[j].tt_gmtoff;
+					break;
+				}
+			}
+			/*
+			** Initially we're assumed to be in standard time.
+			*/
+			isdst = FALSE;
+			theiroffset = theirstdoffset;
+			/*
+			** Now juggle transition times and types
+			** tracking offsets as you do.
+			*/
+			for (i = 0; i < sp->timecnt; ++i) {
+				j = sp->types[i];
+				sp->types[i] = sp->ttis[j].tt_isdst;
+				if (sp->ttis[j].tt_ttisgmt) {
+					/* No adjustment to transition time */
+				} else {
+					/*
+					** If summer time is in effect, and the
+					** transition time was not specified as
+					** standard time, add the summer time
+					** offset to the transition time;
+					** otherwise, add the standard time
+					** offset to the transition time.
+					*/
+					/*
+					** Transitions from DST to DDST
+					** will effectively disappear since
+					** POSIX provides for only one DST
+					** offset.
+					*/
+					if (isdst && !sp->ttis[j].tt_ttisstd) {
+						sp->ats[i] += dstoffset -
+							theirdstoffset;
+					} else {
+						sp->ats[i] += stdoffset -
+							theirstdoffset;
+					}
+				}
+				theiroffset = -sp->ttis[j].tt_gmtoff;
+				if (sp->ttis[j].tt_isdst)
+					theirdstoffset = theiroffset;
+				else	theirstdoffset = theiroffset;
+			}
+			/*
+			** Finally, fill in ttis.
+			** ttisstd and ttisgmt need not be handled.
+			*/
+			sp->ttis[0].tt_gmtoff = -stdoffset;
+			sp->ttis[0].tt_isdst = FALSE;
+			sp->ttis[0].tt_abbrind = 0;
+			sp->ttis[1].tt_gmtoff = -dstoffset;
+			sp->ttis[1].tt_isdst = TRUE;
+			sp->ttis[1].tt_abbrind = stdlen + 1;
+			sp->typecnt = 2;
+		}
+	} else {
+		dstlen = 0;
+		sp->typecnt = 1;		/* only standard time */
+		sp->timecnt = 0;
+		sp->ttis[0].tt_gmtoff = -stdoffset;
+		sp->ttis[0].tt_isdst = 0;
+		sp->ttis[0].tt_abbrind = 0;
+	}
+	sp->charcnt = stdlen + 1;
+	if (dstlen != 0)
+		sp->charcnt += dstlen + 1;
+	if ((size_t) sp->charcnt > sizeof sp->chars)
+		return -1;
+	cp = sp->chars;
+	(void) strncpy(cp, stdname, stdlen);
+	cp += stdlen;
+	*cp++ = '\0';
+	if (dstlen != 0) {
+		(void) strncpy(cp, dstname, dstlen);
+		*(cp + dstlen) = '\0';
+	}
+	return 0;
+}
+
+static void
+gmtload(sp)
+struct state * const	sp;
+{
+	if (tzload(gmt, sp) != 0)
+		(void) tzparse(gmt, sp, TRUE);
+}
+
+#ifndef STD_INSPIRED
+/*
+** A non-static declaration of tzsetwall in a system header file
+** may cause a warning about this upcoming static declaration...
+*/
+static
+#endif /* !defined STD_INSPIRED */
+void
+tzsetwall P((void))
+{
+	if (lcl_is_set < 0)
+		return;
+	lcl_is_set = -1;
+
+#ifdef ALL_STATE
+	if (lclptr == NULL) {
+		lclptr = (struct state *) malloc(sizeof *lclptr);
+		if (lclptr == NULL) {
+			settzname();	/* all we can do */
+			return;
+		}
+	}
+#endif /* defined ALL_STATE */
+	if (tzload((char *) NULL, lclptr) != 0)
+		gmtload(lclptr);
+	settzname();
+}
+
+void
+tzset P((void))
+{
+	register const char *	name;
+
+	name = getenv("TZ");
+	if (name == NULL) {
+		tzsetwall();
+		return;
+	}
+
+	if (lcl_is_set > 0 && strcmp(lcl_TZname, name) == 0)
+		return;
+	lcl_is_set = strlen(name) < sizeof lcl_TZname;
+	if (lcl_is_set)
+		(void) strcpy(lcl_TZname, name);
+
+#ifdef ALL_STATE
+	if (lclptr == NULL) {
+		lclptr = (struct state *) malloc(sizeof *lclptr);
+		if (lclptr == NULL) {
+			settzname();	/* all we can do */
+			return;
+		}
+	}
+#endif /* defined ALL_STATE */
+	if (*name == '\0') {
+		/*
+		** User wants it fast rather than right.
+		*/
+		lclptr->leapcnt = 0;		/* so, we're off a little */
+		lclptr->timecnt = 0;
+		lclptr->typecnt = 0;
+		lclptr->ttis[0].tt_isdst = 0;
+		lclptr->ttis[0].tt_gmtoff = 0;
+		lclptr->ttis[0].tt_abbrind = 0;
+		(void) strcpy(lclptr->chars, gmt);
+	} else if (tzload(name, lclptr) != 0)
+		if (name[0] == ':' || tzparse(name, lclptr, FALSE) != 0)
+			(void) gmtload(lclptr);
+	settzname();
+}
+
+/*
+** The easy way to behave "as if no library function calls" localtime
+** is to not call it--so we drop its guts into "localsub", which can be
+** freely called.  (And no, the PANS doesn't require the above behavior--
+** but it *is* desirable.)
+**
+** The unused offset argument is for the benefit of mktime variants.
+*/
+
+/*ARGSUSED*/
+static void
+localsub(timep, offset, tmp)
+const time_t * const	timep;
+const long		offset;
+struct tm * const	tmp;
+{
+	register struct state *		sp;
+	register const struct ttinfo *	ttisp;
+	register int			i;
+	const time_t			t = *timep;
+
+	sp = lclptr;
+#ifdef ALL_STATE
+	if (sp == NULL) {
+		gmtsub(timep, offset, tmp);
+		return;
+	}
+#endif /* defined ALL_STATE */
+	if (sp->timecnt == 0 || t < sp->ats[0]) {
+		i = 0;
+		while (sp->ttis[i].tt_isdst)
+			if (++i >= sp->typecnt) {
+				i = 0;
+				break;
+			}
+	} else {
+		for (i = 1; i < sp->timecnt; ++i)
+			if (t < sp->ats[i])
+				break;
+		i = sp->types[i - 1];
+	}
+	ttisp = &sp->ttis[i];
+	/*
+	** To get (wrong) behavior that's compatible with System V Release 2.0
+	** you'd replace the statement below with
+	**	t += ttisp->tt_gmtoff;
+	**	timesub(&t, 0L, sp, tmp);
+	*/
+	timesub(&t, ttisp->tt_gmtoff, sp, tmp);
+	tmp->tm_isdst = ttisp->tt_isdst;
+	tzname[tmp->tm_isdst] = &sp->chars[ttisp->tt_abbrind];
+#ifdef TM_ZONE
+	tmp->TM_ZONE = &sp->chars[ttisp->tt_abbrind];
+#endif /* defined TM_ZONE */
+}
+
+struct tm *
+localtime(timep)
+const time_t * const	timep;
+{
+	tzset();
+	localsub(timep, 0L, &tm);
+	return &tm;
+}
+
+/*
+** Re-entrant version of localtime.
+*/
+
+struct tm *
+localtime_r(timep, tm)
+const time_t * const	timep;
+struct tm *		tm;
+{
+	localsub(timep, 0L, tm);
+	return tm;
+}
+
+/*
+** gmtsub is to gmtime as localsub is to localtime.
+*/
+
+static void
+gmtsub(timep, offset, tmp)
+const time_t * const	timep;
+const long		offset;
+struct tm * const	tmp;
+{
+	if (!gmt_is_set) {
+		gmt_is_set = TRUE;
+#ifdef ALL_STATE
+		gmtptr = (struct state *) malloc(sizeof *gmtptr);
+		if (gmtptr != NULL)
+#endif /* defined ALL_STATE */
+			gmtload(gmtptr);
+	}
+	timesub(timep, offset, gmtptr, tmp);
+#ifdef TM_ZONE
+	/*
+	** Could get fancy here and deliver something such as
+	** "UTC+xxxx" or "UTC-xxxx" if offset is non-zero,
+	** but this is no time for a treasure hunt.
+	*/
+	if (offset != 0)
+		tmp->TM_ZONE = wildabbr;
+	else {
+#ifdef ALL_STATE
+		if (gmtptr == NULL)
+			tmp->TM_ZONE = gmt;
+		else	tmp->TM_ZONE = gmtptr->chars;
+#endif /* defined ALL_STATE */
+#ifndef ALL_STATE
+		tmp->TM_ZONE = gmtptr->chars;
+#endif /* State Farm */
+	}
+#endif /* defined TM_ZONE */
+}
+
+struct tm *
+gmtime(timep)
+const time_t * const	timep;
+{
+	gmtsub(timep, 0L, &tm);
+	return &tm;
+}
+
+/*
+* Re-entrant version of gmtime.
+*/
+
+struct tm *
+gmtime_r(timep, tm)
+const time_t * const	timep;
+struct tm *		tm;
+{
+	gmtsub(timep, 0L, tm);
+	return tm;
+}
+
+#ifdef STD_INSPIRED
+
+struct tm *
+offtime(timep, offset)
+const time_t * const	timep;
+const long		offset;
+{
+	gmtsub(timep, offset, &tm);
+	return &tm;
+}
+
+#endif /* defined STD_INSPIRED */
+
+static void
+timesub(timep, offset, sp, tmp)
+const time_t * const			timep;
+const long				offset;
+register const struct state * const	sp;
+register struct tm * const		tmp;
+{
+	register const struct lsinfo *	lp;
+	register long			days;
+	register long			rem;
+	register int			y;
+	register int			yleap;
+	register const int *		ip;
+	register long			corr;
+	register int			hit;
+	register int			i;
+
+	corr = 0;
+	hit = 0;
+#ifdef ALL_STATE
+	i = (sp == NULL) ? 0 : sp->leapcnt;
+#endif /* defined ALL_STATE */
+#ifndef ALL_STATE
+	i = sp->leapcnt;
+#endif /* State Farm */
+	while (--i >= 0) {
+		lp = &sp->lsis[i];
+		if (*timep >= lp->ls_trans) {
+			if (*timep == lp->ls_trans) {
+				hit = ((i == 0 && lp->ls_corr > 0) ||
+					lp->ls_corr > sp->lsis[i - 1].ls_corr);
+				if (hit)
+					while (i > 0 &&
+						sp->lsis[i].ls_trans ==
+						sp->lsis[i - 1].ls_trans + 1 &&
+						sp->lsis[i].ls_corr ==
+						sp->lsis[i - 1].ls_corr + 1) {
+							++hit;
+							--i;
+					}
+			}
+			corr = lp->ls_corr;
+			break;
+		}
+	}
+	days = *timep / SECSPERDAY;
+	rem = *timep % SECSPERDAY;
+#ifdef mc68k
+	if (*timep == 0x80000000) {
+		/*
+		** A 3B1 muffs the division on the most negative number.
+		*/
+		days = -24855;
+		rem = -11648;
+	}
+#endif /* defined mc68k */
+	rem += (offset - corr);
+	while (rem < 0) {
+		rem += SECSPERDAY;
+		--days;
+	}
+	while (rem >= SECSPERDAY) {
+		rem -= SECSPERDAY;
+		++days;
+	}
+	tmp->tm_hour = (int) (rem / SECSPERHOUR);
+	rem = rem % SECSPERHOUR;
+	tmp->tm_min = (int) (rem / SECSPERMIN);
+	/*
+	** A positive leap second requires a special
+	** representation.  This uses "... ??:59:60" et seq.
+	*/
+	tmp->tm_sec = (int) (rem % SECSPERMIN) + hit;
+	tmp->tm_wday = (int) ((EPOCH_WDAY + days) % DAYSPERWEEK);
+	if (tmp->tm_wday < 0)
+		tmp->tm_wday += DAYSPERWEEK;
+	y = EPOCH_YEAR;
+#define LEAPS_THRU_END_OF(y)	((y) / 4 - (y) / 100 + (y) / 400)
+	while (days < 0 || days >= (long) year_lengths[yleap = isleap(y)]) {
+		register int	newy;
+
+		newy = y + days / DAYSPERNYEAR;
+		if (days < 0)
+			--newy;
+		days -= (newy - y) * DAYSPERNYEAR +
+			LEAPS_THRU_END_OF(newy - 1) -
+			LEAPS_THRU_END_OF(y - 1);
+		y = newy;
+	}
+	tmp->tm_year = y - TM_YEAR_BASE;
+	tmp->tm_yday = (int) days;
+	ip = mon_lengths[yleap];
+	for (tmp->tm_mon = 0; days >= (long) ip[tmp->tm_mon]; ++(tmp->tm_mon))
+		days = days - (long) ip[tmp->tm_mon];
+	tmp->tm_mday = (int) (days + 1);
+	tmp->tm_isdst = 0;
+#ifdef TM_GMTOFF
+	tmp->TM_GMTOFF = offset;
+#endif /* defined TM_GMTOFF */
+}
+
+char *
+ctime(timep)
+const time_t * const	timep;
+{
+/*
+** Section 4.12.3.2 of X3.159-1989 requires that
+**	The ctime function converts the calendar time pointed to by timer
+**	to local time in the form of a string.  It is equivalent to
+**		asctime(localtime(timer))
+*/
+	return asctime(localtime(timep));
+}
+
+char *
+ctime_r(timep, buf)
+const time_t * const	timep;
+char *			buf;
+{
+	struct tm	tm;
+
+	return asctime_r(localtime_r(timep, &tm), buf);
+}
+
+/*
+** Adapted from code provided by Robert Elz, who writes:
+**	The "best" way to do mktime I think is based on an idea of Bob
+**	Kridle's (so its said...) from a long time ago.
+**	[kridle@xinet.com as of 1996-01-16.]
+**	It does a binary search of the time_t space.  Since time_t's are
+**	just 32 bits, its a max of 32 iterations (even at 64 bits it
+**	would still be very reasonable).
+*/
+
+#ifndef WRONG
+#define WRONG	(-1)
+#endif /* !defined WRONG */
+
+/*
+** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com).
+*/
+
+static int
+increment_overflow(number, delta)
+int *	number;
+int	delta;
+{
+	int	number0;
+
+	number0 = *number;
+	*number += delta;
+	return (*number < number0) != (delta < 0);
+}
+
+static int
+normalize_overflow(tensptr, unitsptr, base)
+int * const	tensptr;
+int * const	unitsptr;
+const int	base;
+{
+	register int	tensdelta;
+
+	tensdelta = (*unitsptr >= 0) ?
+		(*unitsptr / base) :
+		(-1 - (-1 - *unitsptr) / base);
+	*unitsptr -= tensdelta * base;
+	return increment_overflow(tensptr, tensdelta);
+}
+
+static int
+tmcomp(atmp, btmp)
+register const struct tm * const atmp;
+register const struct tm * const btmp;
+{
+	register int	result;
+
+	if ((result = (atmp->tm_year - btmp->tm_year)) == 0 &&
+		(result = (atmp->tm_mon - btmp->tm_mon)) == 0 &&
+		(result = (atmp->tm_mday - btmp->tm_mday)) == 0 &&
+		(result = (atmp->tm_hour - btmp->tm_hour)) == 0 &&
+		(result = (atmp->tm_min - btmp->tm_min)) == 0)
+			result = atmp->tm_sec - btmp->tm_sec;
+	return result;
+}
+
+static time_t
+time2sub(tmp, funcp, offset, okayp, do_norm_secs)
+struct tm * const	tmp;
+void (* const		funcp) P((const time_t*, long, struct tm*));
+const long		offset;
+int * const		okayp;
+const int		do_norm_secs;
+{
+	register const struct state *	sp;
+	register int			dir;
+	register int			bits;
+	register int			i, j ;
+	register int			saved_seconds;
+	time_t				newt;
+	time_t				t;
+	struct tm			yourtm, mytm;
+
+	*okayp = FALSE;
+	yourtm = *tmp;
+	if (do_norm_secs) {
+		if (normalize_overflow(&yourtm.tm_min, &yourtm.tm_sec,
+			SECSPERMIN))
+				return WRONG;
+	}
+	if (normalize_overflow(&yourtm.tm_hour, &yourtm.tm_min, MINSPERHOUR))
+		return WRONG;
+	if (normalize_overflow(&yourtm.tm_mday, &yourtm.tm_hour, HOURSPERDAY))
+		return WRONG;
+	if (normalize_overflow(&yourtm.tm_year, &yourtm.tm_mon, MONSPERYEAR))
+		return WRONG;
+	/*
+	** Turn yourtm.tm_year into an actual year number for now.
+	** It is converted back to an offset from TM_YEAR_BASE later.
+	*/
+	if (increment_overflow(&yourtm.tm_year, TM_YEAR_BASE))
+		return WRONG;
+	while (yourtm.tm_mday <= 0) {
+		if (increment_overflow(&yourtm.tm_year, -1))
+			return WRONG;
+		i = yourtm.tm_year + (1 < yourtm.tm_mon);
+		yourtm.tm_mday += year_lengths[isleap(i)];
+	}
+	while (yourtm.tm_mday > DAYSPERLYEAR) {
+		i = yourtm.tm_year + (1 < yourtm.tm_mon);
+		yourtm.tm_mday -= year_lengths[isleap(i)];
+		if (increment_overflow(&yourtm.tm_year, 1))
+			return WRONG;
+	}
+	for ( ; ; ) {
+		i = mon_lengths[isleap(yourtm.tm_year)][yourtm.tm_mon];
+		if (yourtm.tm_mday <= i)
+			break;
+		yourtm.tm_mday -= i;
+		if (++yourtm.tm_mon >= MONSPERYEAR) {
+			yourtm.tm_mon = 0;
+			if (increment_overflow(&yourtm.tm_year, 1))
+				return WRONG;
+		}
+	}
+	if (increment_overflow(&yourtm.tm_year, -TM_YEAR_BASE))
+		return WRONG;
+	if (yourtm.tm_sec >= 0 && yourtm.tm_sec < SECSPERMIN)
+		saved_seconds = 0;
+	else if (yourtm.tm_year + TM_YEAR_BASE < EPOCH_YEAR) {
+		/*
+		** We can't set tm_sec to 0, because that might push the
+		** time below the minimum representable time.
+		** Set tm_sec to 59 instead.
+		** This assumes that the minimum representable time is
+		** not in the same minute that a leap second was deleted from,
+		** which is a safer assumption than using 58 would be.
+		*/
+		if (increment_overflow(&yourtm.tm_sec, 1 - SECSPERMIN))
+			return WRONG;
+		saved_seconds = yourtm.tm_sec;
+		yourtm.tm_sec = SECSPERMIN - 1;
+	} else {
+		saved_seconds = yourtm.tm_sec;
+		yourtm.tm_sec = 0;
+	}
+	/*
+	** Divide the search space in half
+	** (this works whether time_t is signed or unsigned).
+	*/
+	bits = TYPE_BIT(time_t) - 1;
+	/*
+	** If time_t is signed, then 0 is just above the median,
+	** assuming two's complement arithmetic.
+	** If time_t is unsigned, then (1 << bits) is just above the median.
+	*/
+	t = TYPE_SIGNED(time_t) ? 0 : (((time_t) 1) << bits);
+	for ( ; ; ) {
+		(*funcp)(&t, offset, &mytm);
+		dir = tmcomp(&mytm, &yourtm);
+		if (dir != 0) {
+			if (bits-- < 0)
+				return WRONG;
+			if (bits < 0)
+				--t; /* may be needed if new t is minimal */
+			else if (dir > 0)
+				t -= ((time_t) 1) << bits;
+			else	t += ((time_t) 1) << bits;
+			continue;
+		}
+		if (yourtm.tm_isdst < 0 || mytm.tm_isdst == yourtm.tm_isdst)
+			break;
+		/*
+		** Right time, wrong type.
+		** Hunt for right time, right type.
+		** It's okay to guess wrong since the guess
+		** gets checked.
+		*/
+		/*
+		** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
+		*/
+		sp = (const struct state *)
+			(((void *) funcp == (void *) localsub) ?
+			lclptr : gmtptr);
+#ifdef ALL_STATE
+		if (sp == NULL)
+			return WRONG;
+#endif /* defined ALL_STATE */
+		for (i = sp->typecnt - 1; i >= 0; --i) {
+			if (sp->ttis[i].tt_isdst != yourtm.tm_isdst)
+				continue;
+			for (j = sp->typecnt - 1; j >= 0; --j) {
+				if (sp->ttis[j].tt_isdst == yourtm.tm_isdst)
+					continue;
+				newt = t + sp->ttis[j].tt_gmtoff -
+					sp->ttis[i].tt_gmtoff;
+				(*funcp)(&newt, offset, &mytm);
+				if (tmcomp(&mytm, &yourtm) != 0)
+					continue;
+				if (mytm.tm_isdst != yourtm.tm_isdst)
+					continue;
+				/*
+				** We have a match.
+				*/
+				t = newt;
+				goto label;
+			}
+		}
+		return WRONG;
+	}
+label:
+	newt = t + saved_seconds;
+	if ((newt < t) != (saved_seconds < 0))
+		return WRONG;
+	t = newt;
+	(*funcp)(&t, offset, tmp);
+	*okayp = TRUE;
+	return t;
+}
+
+static time_t
+time2(tmp, funcp, offset, okayp)
+struct tm * const	tmp;
+void (* const		funcp) P((const time_t*, long, struct tm*));
+const long		offset;
+int * const		okayp;
+{
+	time_t	t;
+
+	/*
+	** First try without normalization of seconds
+	** (in case tm_sec contains a value associated with a leap second).
+	** If that fails, try with normalization of seconds.
+	*/
+	t = time2sub(tmp, funcp, offset, okayp, FALSE);
+	return *okayp ? t : time2sub(tmp, funcp, offset, okayp, TRUE);
+}
+
+static time_t
+time1(tmp, funcp, offset)
+struct tm * const	tmp;
+void (* const		funcp) P((const time_t *, long, struct tm *));
+const long		offset;
+{
+	register time_t			t;
+	register const struct state *	sp;
+	register int			samei, otheri;
+	register int			sameind, otherind;
+	register int			i;
+	register int			nseen;
+	int				seen[TZ_MAX_TYPES];
+	int				types[TZ_MAX_TYPES];
+	int				okay;
+
+	if (tmp->tm_isdst > 1)
+		tmp->tm_isdst = 1;
+	t = time2(tmp, funcp, offset, &okay);
+#ifdef PCTS
+	/*
+	** PCTS code courtesy Grant Sullivan (grant@osf.org).
+	*/
+	if (okay)
+		return t;
+	if (tmp->tm_isdst < 0)
+		tmp->tm_isdst = 0;	/* reset to std and try again */
+#endif /* defined PCTS */
+#ifndef PCTS
+	if (okay || tmp->tm_isdst < 0)
+		return t;
+#endif /* !defined PCTS */
+	/*
+	** We're supposed to assume that somebody took a time of one type
+	** and did some math on it that yielded a "struct tm" that's bad.
+	** We try to divine the type they started from and adjust to the
+	** type they need.
+	*/
+	/*
+	** The (void *) casts are the benefit of SunOS 3.3 on Sun 2's.
+	*/
+	sp = (const struct state *) (((void *) funcp == (void *) localsub) ?
+		lclptr : gmtptr);
+#ifdef ALL_STATE
+	if (sp == NULL)
+		return WRONG;
+#endif /* defined ALL_STATE */
+	for (i = 0; i < sp->typecnt; ++i)
+		seen[i] = FALSE;
+	nseen = 0;
+	for (i = sp->timecnt - 1; i >= 0; --i)
+		if (!seen[sp->types[i]]) {
+			seen[sp->types[i]] = TRUE;
+			types[nseen++] = sp->types[i];
+		}
+	for (sameind = 0; sameind < nseen; ++sameind) {
+		samei = types[sameind];
+		if (sp->ttis[samei].tt_isdst != tmp->tm_isdst)
+			continue;
+		for (otherind = 0; otherind < nseen; ++otherind) {
+			otheri = types[otherind];
+			if (sp->ttis[otheri].tt_isdst == tmp->tm_isdst)
+				continue;
+			tmp->tm_sec += sp->ttis[otheri].tt_gmtoff -
+					sp->ttis[samei].tt_gmtoff;
+			tmp->tm_isdst = !tmp->tm_isdst;
+			t = time2(tmp, funcp, offset, &okay);
+			if (okay)
+				return t;
+			tmp->tm_sec -= sp->ttis[otheri].tt_gmtoff -
+					sp->ttis[samei].tt_gmtoff;
+			tmp->tm_isdst = !tmp->tm_isdst;
+		}
+	}
+	return WRONG;
+}
+
+time_t
+mktime(tmp)
+struct tm * const	tmp;
+{
+	tzset();
+	return time1(tmp, localsub, 0L);
+}
+
+#ifdef STD_INSPIRED
+
+time_t
+timelocal(tmp)
+struct tm * const	tmp;
+{
+	tmp->tm_isdst = -1;	/* in case it wasn't initialized */
+	return mktime(tmp);
+}
+
+time_t
+timegm(tmp)
+struct tm * const	tmp;
+{
+	tmp->tm_isdst = 0;
+	return time1(tmp, gmtsub, 0L);
+}
+
+time_t
+timeoff(tmp, offset)
+struct tm * const	tmp;
+const long		offset;
+{
+	tmp->tm_isdst = 0;
+	return time1(tmp, gmtsub, offset);
+}
+
+#endif /* defined STD_INSPIRED */
+
+#ifdef CMUCS
+
+/*
+** The following is supplied for compatibility with
+** previous versions of the CMUCS runtime library.
+*/
+
+long
+gtime(tmp)
+struct tm * const	tmp;
+{
+	const time_t	t = mktime(tmp);
+
+	if (t == WRONG)
+		return -1;
+	return t;
+}
+
+#endif /* defined CMUCS */
+
+/*
+** XXX--is the below the right way to conditionalize??
+*/
+
+#ifdef STD_INSPIRED
+
+/*
+** IEEE Std 1003.1-1988 (POSIX) legislates that 536457599
+** shall correspond to "Wed Dec 31 23:59:59 UTC 1986", which
+** is not the case if we are accounting for leap seconds.
+** So, we provide the following conversion routines for use
+** when exchanging timestamps with POSIX conforming systems.
+*/
+
+static long
+leapcorr(timep)
+time_t *	timep;
+{
+	register struct state *		sp;
+	register struct lsinfo *	lp;
+	register int			i;
+
+	sp = lclptr;
+	i = sp->leapcnt;
+	while (--i >= 0) {
+		lp = &sp->lsis[i];
+		if (*timep >= lp->ls_trans)
+			return lp->ls_corr;
+	}
+	return 0;
+}
+
+time_t
+time2posix(t)
+time_t	t;
+{
+	tzset();
+	return t - leapcorr(&t);
+}
+
+time_t
+posix2time(t)
+time_t	t;
+{
+	time_t	x;
+	time_t	y;
+
+	tzset();
+	/*
+	** For a positive leap second hit, the result
+	** is not unique.  For a negative leap second
+	** hit, the corresponding time doesn't exist,
+	** so we return an adjacent second.
+	*/
+	x = t + leapcorr(&t);
+	y = x - leapcorr(&x);
+	if (y < t) {
+		do {
+			x++;
+			y = x - leapcorr(&x);
+		} while (y < t);
+		if (t != y)
+			return x - 1;
+	} else if (y > t) {
+		do {
+			--x;
+			y = x - leapcorr(&x);
+		} while (y > t);
+		if (t != y)
+			return x + 1;
+	}
+	return x;
+}
+
+#endif /* defined STD_INSPIRED */