Imported Upstream version 1.4upstream/1.4

1 files changed, 0 insertions, 1206 deletions

diff --git a/src/pkg/time/time.go b/src/pkg/time/time.go
deleted file mode 100644
index 0a2b09142..000000000
--- a/src/pkg/time/time.go
+++ /dev/null
@@ -1,1206 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package time provides functionality for measuring and displaying time.
-//
-// The calendrical calculations always assume a Gregorian calendar.
-package time
-
-import "errors"
-
-// A Time represents an instant in time with nanosecond precision.
-//
-// Programs using times should typically store and pass them as values,
-// not pointers.  That is, time variables and struct fields should be of
-// type time.Time, not *time.Time.  A Time value can be used by
-// multiple goroutines simultaneously.
-//
-// Time instants can be compared using the Before, After, and Equal methods.
-// The Sub method subtracts two instants, producing a Duration.
-// The Add method adds a Time and a Duration, producing a Time.
-//
-// The zero value of type Time is January 1, year 1, 00:00:00.000000000 UTC.
-// As this time is unlikely to come up in practice, the IsZero method gives
-// a simple way of detecting a time that has not been initialized explicitly.
-//
-// Each Time has associated with it a Location, consulted when computing the
-// presentation form of the time, such as in the Format, Hour, and Year methods.
-// The methods Local, UTC, and In return a Time with a specific location.
-// Changing the location in this way changes only the presentation; it does not
-// change the instant in time being denoted and therefore does not affect the
-// computations described in earlier paragraphs.
-//
-type Time struct {
-	// sec gives the number of seconds elapsed since
-	// January 1, year 1 00:00:00 UTC.
-	sec int64
-
-	// nsec specifies a non-negative nanosecond
-	// offset within the second named by Seconds.
-	// It must be in the range [0, 999999999].
-	//
-	// It is declared as uintptr instead of int32 or uint32
-	// to avoid garbage collector aliasing in the case where
-	// on a 64-bit system the int32 or uint32 field is written
-	// over the low half of a pointer, creating another pointer.
-	// TODO(rsc): When the garbage collector is completely
-	// precise, change back to int32.
-	nsec uintptr
-
-	// loc specifies the Location that should be used to
-	// determine the minute, hour, month, day, and year
-	// that correspond to this Time.
-	// Only the zero Time has a nil Location.
-	// In that case it is interpreted to mean UTC.
-	loc *Location
-}
-
-// After reports whether the time instant t is after u.
-func (t Time) After(u Time) bool {
-	return t.sec > u.sec || t.sec == u.sec && t.nsec > u.nsec
-}
-
-// Before reports whether the time instant t is before u.
-func (t Time) Before(u Time) bool {
-	return t.sec < u.sec || t.sec == u.sec && t.nsec < u.nsec
-}
-
-// Equal reports whether t and u represent the same time instant.
-// Two times can be equal even if they are in different locations.
-// For example, 6:00 +0200 CEST and 4:00 UTC are Equal.
-// This comparison is different from using t == u, which also compares
-// the locations.
-func (t Time) Equal(u Time) bool {
-	return t.sec == u.sec && t.nsec == u.nsec
-}
-
-// A Month specifies a month of the year (January = 1, ...).
-type Month int
-
-const (
-	January Month = 1 + iota
-	February
-	March
-	April
-	May
-	June
-	July
-	August
-	September
-	October
-	November
-	December
-)
-
-var months = [...]string{
-	"January",
-	"February",
-	"March",
-	"April",
-	"May",
-	"June",
-	"July",
-	"August",
-	"September",
-	"October",
-	"November",
-	"December",
-}
-
-// String returns the English name of the month ("January", "February", ...).
-func (m Month) String() string { return months[m-1] }
-
-// A Weekday specifies a day of the week (Sunday = 0, ...).
-type Weekday int
-
-const (
-	Sunday Weekday = iota
-	Monday
-	Tuesday
-	Wednesday
-	Thursday
-	Friday
-	Saturday
-)
-
-var days = [...]string{
-	"Sunday",
-	"Monday",
-	"Tuesday",
-	"Wednesday",
-	"Thursday",
-	"Friday",
-	"Saturday",
-}
-
-// String returns the English name of the day ("Sunday", "Monday", ...).
-func (d Weekday) String() string { return days[d] }
-
-// Computations on time.
-//
-// The zero value for a Time is defined to be
-//	January 1, year 1, 00:00:00.000000000 UTC
-// which (1) looks like a zero, or as close as you can get in a date
-// (1-1-1 00:00:00 UTC), (2) is unlikely enough to arise in practice to
-// be a suitable "not set" sentinel, unlike Jan 1 1970, and (3) has a
-// non-negative year even in time zones west of UTC, unlike 1-1-0
-// 00:00:00 UTC, which would be 12-31-(-1) 19:00:00 in New York.
-//
-// The zero Time value does not force a specific epoch for the time
-// representation.  For example, to use the Unix epoch internally, we
-// could define that to distinguish a zero value from Jan 1 1970, that
-// time would be represented by sec=-1, nsec=1e9.  However, it does
-// suggest a representation, namely using 1-1-1 00:00:00 UTC as the
-// epoch, and that's what we do.
-//
-// The Add and Sub computations are oblivious to the choice of epoch.
-//
-// The presentation computations - year, month, minute, and so on - all
-// rely heavily on division and modulus by positive constants.  For
-// calendrical calculations we want these divisions to round down, even
-// for negative values, so that the remainder is always positive, but
-// Go's division (like most hardware division instructions) rounds to
-// zero.  We can still do those computations and then adjust the result
-// for a negative numerator, but it's annoying to write the adjustment
-// over and over.  Instead, we can change to a different epoch so long
-// ago that all the times we care about will be positive, and then round
-// to zero and round down coincide.  These presentation routines already
-// have to add the zone offset, so adding the translation to the
-// alternate epoch is cheap.  For example, having a non-negative time t
-// means that we can write
-//
-//	sec = t % 60
-//
-// instead of
-//
-//	sec = t % 60
-//	if sec < 0 {
-//		sec += 60
-//	}
-//
-// everywhere.
-//
-// The calendar runs on an exact 400 year cycle: a 400-year calendar
-// printed for 1970-2469 will apply as well to 2470-2869.  Even the days
-// of the week match up.  It simplifies the computations to choose the
-// cycle boundaries so that the exceptional years are always delayed as
-// long as possible.  That means choosing a year equal to 1 mod 400, so
-// that the first leap year is the 4th year, the first missed leap year
-// is the 100th year, and the missed missed leap year is the 400th year.
-// So we'd prefer instead to print a calendar for 2001-2400 and reuse it
-// for 2401-2800.
-//
-// Finally, it's convenient if the delta between the Unix epoch and
-// long-ago epoch is representable by an int64 constant.
-//
-// These three considerations—choose an epoch as early as possible, that
-// uses a year equal to 1 mod 400, and that is no more than 2⁶³ seconds
-// earlier than 1970—bring us to the year -292277022399.  We refer to
-// this year as the absolute zero year, and to times measured as a uint64
-// seconds since this year as absolute times.
-//
-// Times measured as an int64 seconds since the year 1—the representation
-// used for Time's sec field—are called internal times.
-//
-// Times measured as an int64 seconds since the year 1970 are called Unix
-// times.
-//
-// It is tempting to just use the year 1 as the absolute epoch, defining
-// that the routines are only valid for years >= 1.  However, the
-// routines would then be invalid when displaying the epoch in time zones
-// west of UTC, since it is year 0.  It doesn't seem tenable to say that
-// printing the zero time correctly isn't supported in half the time
-// zones.  By comparison, it's reasonable to mishandle some times in
-// the year -292277022399.
-//
-// All this is opaque to clients of the API and can be changed if a
-// better implementation presents itself.
-
-const (
-	// The unsigned zero year for internal calculations.
-	// Must be 1 mod 400, and times before it will not compute correctly,
-	// but otherwise can be changed at will.
-	absoluteZeroYear = -292277022399
-
-	// The year of the zero Time.
-	// Assumed by the unixToInternal computation below.
-	internalYear = 1
-
-	// The year of the zero Unix time.
-	unixYear = 1970
-
-	// Offsets to convert between internal and absolute or Unix times.
-	absoluteToInternal int64 = (absoluteZeroYear - internalYear) * 365.2425 * secondsPerDay
-	internalToAbsolute       = -absoluteToInternal
-
-	unixToInternal int64 = (1969*365 + 1969/4 - 1969/100 + 1969/400) * secondsPerDay
-	internalToUnix int64 = -unixToInternal
-)
-
-// IsZero reports whether t represents the zero time instant,
-// January 1, year 1, 00:00:00 UTC.
-func (t Time) IsZero() bool {
-	return t.sec == 0 && t.nsec == 0
-}
-
-// abs returns the time t as an absolute time, adjusted by the zone offset.
-// It is called when computing a presentation property like Month or Hour.
-func (t Time) abs() uint64 {
-	l := t.loc
-	// Avoid function calls when possible.
-	if l == nil || l == &localLoc {
-		l = l.get()
-	}
-	sec := t.sec + internalToUnix
-	if l != &utcLoc {
-		if l.cacheZone != nil && l.cacheStart <= sec && sec < l.cacheEnd {
-			sec += int64(l.cacheZone.offset)
-		} else {
-			_, offset, _, _, _ := l.lookup(sec)
-			sec += int64(offset)
-		}
-	}
-	return uint64(sec + (unixToInternal + internalToAbsolute))
-}
-
-// locabs is a combination of the Zone and abs methods,
-// extracting both return values from a single zone lookup.
-func (t Time) locabs() (name string, offset int, abs uint64) {
-	l := t.loc
-	if l == nil || l == &localLoc {
-		l = l.get()
-	}
-	// Avoid function call if we hit the local time cache.
-	sec := t.sec + internalToUnix
-	if l != &utcLoc {
-		if l.cacheZone != nil && l.cacheStart <= sec && sec < l.cacheEnd {
-			name = l.cacheZone.name
-			offset = l.cacheZone.offset
-		} else {
-			name, offset, _, _, _ = l.lookup(sec)
-		}
-		sec += int64(offset)
-	} else {
-		name = "UTC"
-	}
-	abs = uint64(sec + (unixToInternal + internalToAbsolute))
-	return
-}
-
-// Date returns the year, month, and day in which t occurs.
-func (t Time) Date() (year int, month Month, day int) {
-	year, month, day, _ = t.date(true)
-	return
-}
-
-// Year returns the year in which t occurs.
-func (t Time) Year() int {
-	year, _, _, _ := t.date(false)
-	return year
-}
-
-// Month returns the month of the year specified by t.
-func (t Time) Month() Month {
-	_, month, _, _ := t.date(true)
-	return month
-}
-
-// Day returns the day of the month specified by t.
-func (t Time) Day() int {
-	_, _, day, _ := t.date(true)
-	return day
-}
-
-// Weekday returns the day of the week specified by t.
-func (t Time) Weekday() Weekday {
-	return absWeekday(t.abs())
-}
-
-// absWeekday is like Weekday but operates on an absolute time.
-func absWeekday(abs uint64) Weekday {
-	// January 1 of the absolute year, like January 1 of 2001, was a Monday.
-	sec := (abs + uint64(Monday)*secondsPerDay) % secondsPerWeek
-	return Weekday(int(sec) / secondsPerDay)
-}
-
-// ISOWeek returns the ISO 8601 year and week number in which t occurs.
-// Week ranges from 1 to 53. Jan 01 to Jan 03 of year n might belong to
-// week 52 or 53 of year n-1, and Dec 29 to Dec 31 might belong to week 1
-// of year n+1.
-func (t Time) ISOWeek() (year, week int) {
-	year, month, day, yday := t.date(true)
-	wday := int(t.Weekday()+6) % 7 // weekday but Monday = 0.
-	const (
-		Mon int = iota
-		Tue
-		Wed
-		Thu
-		Fri
-		Sat
-		Sun
-	)
-
-	// Calculate week as number of Mondays in year up to
-	// and including today, plus 1 because the first week is week 0.
-	// Putting the + 1 inside the numerator as a + 7 keeps the
-	// numerator from being negative, which would cause it to
-	// round incorrectly.
-	week = (yday - wday + 7) / 7
-
-	// The week number is now correct under the assumption
-	// that the first Monday of the year is in week 1.
-	// If Jan 1 is a Tuesday, Wednesday, or Thursday, the first Monday
-	// is actually in week 2.
-	jan1wday := (wday - yday + 7*53) % 7
-	if Tue <= jan1wday && jan1wday <= Thu {
-		week++
-	}
-
-	// If the week number is still 0, we're in early January but in
-	// the last week of last year.
-	if week == 0 {
-		year--
-		week = 52
-		// A year has 53 weeks when Jan 1 or Dec 31 is a Thursday,
-		// meaning Jan 1 of the next year is a Friday
-		// or it was a leap year and Jan 1 of the next year is a Saturday.
-		if jan1wday == Fri || (jan1wday == Sat && isLeap(year)) {
-			week++
-		}
-	}
-
-	// December 29 to 31 are in week 1 of next year if
-	// they are after the last Thursday of the year and
-	// December 31 is a Monday, Tuesday, or Wednesday.
-	if month == December && day >= 29 && wday < Thu {
-		if dec31wday := (wday + 31 - day) % 7; Mon <= dec31wday && dec31wday <= Wed {
-			year++
-			week = 1
-		}
-	}
-
-	return
-}
-
-// Clock returns the hour, minute, and second within the day specified by t.
-func (t Time) Clock() (hour, min, sec int) {
-	return absClock(t.abs())
-}
-
-// absClock is like clock but operates on an absolute time.
-func absClock(abs uint64) (hour, min, sec int) {
-	sec = int(abs % secondsPerDay)
-	hour = sec / secondsPerHour
-	sec -= hour * secondsPerHour
-	min = sec / secondsPerMinute
-	sec -= min * secondsPerMinute
-	return
-}
-
-// Hour returns the hour within the day specified by t, in the range [0, 23].
-func (t Time) Hour() int {
-	return int(t.abs()%secondsPerDay) / secondsPerHour
-}
-
-// Minute returns the minute offset within the hour specified by t, in the range [0, 59].
-func (t Time) Minute() int {
-	return int(t.abs()%secondsPerHour) / secondsPerMinute
-}
-
-// Second returns the second offset within the minute specified by t, in the range [0, 59].
-func (t Time) Second() int {
-	return int(t.abs() % secondsPerMinute)
-}
-
-// Nanosecond returns the nanosecond offset within the second specified by t,
-// in the range [0, 999999999].
-func (t Time) Nanosecond() int {
-	return int(t.nsec)
-}
-
-// YearDay returns the day of the year specified by t, in the range [1,365] for non-leap years,
-// and [1,366] in leap years.
-func (t Time) YearDay() int {
-	_, _, _, yday := t.date(false)
-	return yday + 1
-}
-
-// A Duration represents the elapsed time between two instants
-// as an int64 nanosecond count.  The representation limits the
-// largest representable duration to approximately 290 years.
-type Duration int64
-
-const (
-	minDuration Duration = -1 << 63
-	maxDuration Duration = 1<<63 - 1
-)
-
-// Common durations.  There is no definition for units of Day or larger
-// to avoid confusion across daylight savings time zone transitions.
-//
-// To count the number of units in a Duration, divide:
-//	second := time.Second
-//	fmt.Print(int64(second/time.Millisecond)) // prints 1000
-//
-// To convert an integer number of units to a Duration, multiply:
-//	seconds := 10
-//	fmt.Print(time.Duration(seconds)*time.Second) // prints 10s
-//
-const (
-	Nanosecond  Duration = 1
-	Microsecond          = 1000 * Nanosecond
-	Millisecond          = 1000 * Microsecond
-	Second               = 1000 * Millisecond
-	Minute               = 60 * Second
-	Hour                 = 60 * Minute
-)
-
-// String returns a string representing the duration in the form "72h3m0.5s".
-// Leading zero units are omitted.  As a special case, durations less than one
-// second format use a smaller unit (milli-, micro-, or nanoseconds) to ensure
-// that the leading digit is non-zero.  The zero duration formats as 0,
-// with no unit.
-func (d Duration) String() string {
-	// Largest time is 2540400h10m10.000000000s
-	var buf [32]byte
-	w := len(buf)
-
-	u := uint64(d)
-	neg := d < 0
-	if neg {
-		u = -u
-	}
-
-	if u < uint64(Second) {
-		// Special case: if duration is smaller than a second,
-		// use smaller units, like 1.2ms
-		var (
-			prec int
-			unit byte
-		)
-		switch {
-		case u == 0:
-			return "0"
-		case u < uint64(Microsecond):
-			// print nanoseconds
-			prec = 0
-			unit = 'n'
-		case u < uint64(Millisecond):
-			// print microseconds
-			prec = 3
-			unit = 'u'
-		default:
-			// print milliseconds
-			prec = 6
-			unit = 'm'
-		}
-		w -= 2
-		buf[w] = unit
-		buf[w+1] = 's'
-		w, u = fmtFrac(buf[:w], u, prec)
-		w = fmtInt(buf[:w], u)
-	} else {
-		w--
-		buf[w] = 's'
-
-		w, u = fmtFrac(buf[:w], u, 9)
-
-		// u is now integer seconds
-		w = fmtInt(buf[:w], u%60)
-		u /= 60
-
-		// u is now integer minutes
-		if u > 0 {
-			w--
-			buf[w] = 'm'
-			w = fmtInt(buf[:w], u%60)
-			u /= 60
-
-			// u is now integer hours
-			// Stop at hours because days can be different lengths.
-			if u > 0 {
-				w--
-				buf[w] = 'h'
-				w = fmtInt(buf[:w], u)
-			}
-		}
-	}
-
-	if neg {
-		w--
-		buf[w] = '-'
-	}
-
-	return string(buf[w:])
-}
-
-// fmtFrac formats the fraction of v/10**prec (e.g., ".12345") into the
-// tail of buf, omitting trailing zeros.  it omits the decimal
-// point too when the fraction is 0.  It returns the index where the
-// output bytes begin and the value v/10**prec.
-func fmtFrac(buf []byte, v uint64, prec int) (nw int, nv uint64) {
-	// Omit trailing zeros up to and including decimal point.
-	w := len(buf)
-	print := false
-	for i := 0; i < prec; i++ {
-		digit := v % 10
-		print = print || digit != 0
-		if print {
-			w--
-			buf[w] = byte(digit) + '0'
-		}
-		v /= 10
-	}
-	if print {
-		w--
-		buf[w] = '.'
-	}
-	return w, v
-}
-
-// fmtInt formats v into the tail of buf.
-// It returns the index where the output begins.
-func fmtInt(buf []byte, v uint64) int {
-	w := len(buf)
-	if v == 0 {
-		w--
-		buf[w] = '0'
-	} else {
-		for v > 0 {
-			w--
-			buf[w] = byte(v%10) + '0'
-			v /= 10
-		}
-	}
-	return w
-}
-
-// Nanoseconds returns the duration as an integer nanosecond count.
-func (d Duration) Nanoseconds() int64 { return int64(d) }
-
-// These methods return float64 because the dominant
-// use case is for printing a floating point number like 1.5s, and
-// a truncation to integer would make them not useful in those cases.
-// Splitting the integer and fraction ourselves guarantees that
-// converting the returned float64 to an integer rounds the same
-// way that a pure integer conversion would have, even in cases
-// where, say, float64(d.Nanoseconds())/1e9 would have rounded
-// differently.
-
-// Seconds returns the duration as a floating point number of seconds.
-func (d Duration) Seconds() float64 {
-	sec := d / Second
-	nsec := d % Second
-	return float64(sec) + float64(nsec)*1e-9
-}
-
-// Minutes returns the duration as a floating point number of minutes.
-func (d Duration) Minutes() float64 {
-	min := d / Minute
-	nsec := d % Minute
-	return float64(min) + float64(nsec)*(1e-9/60)
-}
-
-// Hours returns the duration as a floating point number of hours.
-func (d Duration) Hours() float64 {
-	hour := d / Hour
-	nsec := d % Hour
-	return float64(hour) + float64(nsec)*(1e-9/60/60)
-}
-
-// Add returns the time t+d.
-func (t Time) Add(d Duration) Time {
-	t.sec += int64(d / 1e9)
-	nsec := int32(t.nsec) + int32(d%1e9)
-	if nsec >= 1e9 {
-		t.sec++
-		nsec -= 1e9
-	} else if nsec < 0 {
-		t.sec--
-		nsec += 1e9
-	}
-	t.nsec = uintptr(nsec)
-	return t
-}
-
-// Sub returns the duration t-u. If the result exceeds the maximum (or minimum)
-// value that can be stored in a Duration, the maximum (or minimum) duration
-// will be returned.
-// To compute t-d for a duration d, use t.Add(-d).
-func (t Time) Sub(u Time) Duration {
-	d := Duration(t.sec-u.sec)*Second + Duration(int32(t.nsec)-int32(u.nsec))
-	// Check for overflow or underflow.
-	switch {
-	case u.Add(d).Equal(t):
-		return d // d is correct
-	case t.Before(u):
-		return minDuration // t - u is negative out of range
-	default:
-		return maxDuration // t - u is positive out of range
-	}
-}
-
-// Since returns the time elapsed since t.
-// It is shorthand for time.Now().Sub(t).
-func Since(t Time) Duration {
-	return Now().Sub(t)
-}
-
-// AddDate returns the time corresponding to adding the
-// given number of years, months, and days to t.
-// For example, AddDate(-1, 2, 3) applied to January 1, 2011
-// returns March 4, 2010.
-//
-// AddDate normalizes its result in the same way that Date does,
-// so, for example, adding one month to October 31 yields
-// December 1, the normalized form for November 31.
-func (t Time) AddDate(years int, months int, days int) Time {
-	year, month, day := t.Date()
-	hour, min, sec := t.Clock()
-	return Date(year+years, month+Month(months), day+days, hour, min, sec, int(t.nsec), t.loc)
-}
-
-const (
-	secondsPerMinute = 60
-	secondsPerHour   = 60 * 60
-	secondsPerDay    = 24 * secondsPerHour
-	secondsPerWeek   = 7 * secondsPerDay
-	daysPer400Years  = 365*400 + 97
-	daysPer100Years  = 365*100 + 24
-	daysPer4Years    = 365*4 + 1
-)
-
-// date computes the year, day of year, and when full=true,
-// the month and day in which t occurs.
-func (t Time) date(full bool) (year int, month Month, day int, yday int) {
-	return absDate(t.abs(), full)
-}
-
-// absDate is like date but operates on an absolute time.
-func absDate(abs uint64, full bool) (year int, month Month, day int, yday int) {
-	// Split into time and day.
-	d := abs / secondsPerDay
-
-	// Account for 400 year cycles.
-	n := d / daysPer400Years
-	y := 400 * n
-	d -= daysPer400Years * n
-
-	// Cut off 100-year cycles.
-	// The last cycle has one extra leap year, so on the last day
-	// of that year, day / daysPer100Years will be 4 instead of 3.
-	// Cut it back down to 3 by subtracting n>>2.
-	n = d / daysPer100Years
-	n -= n >> 2
-	y += 100 * n
-	d -= daysPer100Years * n
-
-	// Cut off 4-year cycles.
-	// The last cycle has a missing leap year, which does not
-	// affect the computation.
-	n = d / daysPer4Years
-	y += 4 * n
-	d -= daysPer4Years * n
-
-	// Cut off years within a 4-year cycle.
-	// The last year is a leap year, so on the last day of that year,
-	// day / 365 will be 4 instead of 3.  Cut it back down to 3
-	// by subtracting n>>2.
-	n = d / 365
-	n -= n >> 2
-	y += n
-	d -= 365 * n
-
-	year = int(int64(y) + absoluteZeroYear)
-	yday = int(d)
-
-	if !full {
-		return
-	}
-
-	day = yday
-	if isLeap(year) {
-		// Leap year
-		switch {
-		case day > 31+29-1:
-			// After leap day; pretend it wasn't there.
-			day--
-		case day == 31+29-1:
-			// Leap day.
-			month = February
-			day = 29
-			return
-		}
-	}
-
-	// Estimate month on assumption that every month has 31 days.
-	// The estimate may be too low by at most one month, so adjust.
-	month = Month(day / 31)
-	end := int(daysBefore[month+1])
-	var begin int
-	if day >= end {
-		month++
-		begin = end
-	} else {
-		begin = int(daysBefore[month])
-	}
-
-	month++ // because January is 1
-	day = day - begin + 1
-	return
-}
-
-// daysBefore[m] counts the number of days in a non-leap year
-// before month m begins.  There is an entry for m=12, counting
-// the number of days before January of next year (365).
-var daysBefore = [...]int32{
-	0,
-	31,
-	31 + 28,
-	31 + 28 + 31,
-	31 + 28 + 31 + 30,
-	31 + 28 + 31 + 30 + 31,
-	31 + 28 + 31 + 30 + 31 + 30,
-	31 + 28 + 31 + 30 + 31 + 30 + 31,
-	31 + 28 + 31 + 30 + 31 + 30 + 31 + 31,
-	31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30,
-	31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31,
-	31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30,
-	31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30 + 31,
-}
-
-func daysIn(m Month, year int) int {
-	if m == February && isLeap(year) {
-		return 29
-	}
-	return int(daysBefore[m] - daysBefore[m-1])
-}
-
-// Provided by package runtime.
-func now() (sec int64, nsec int32)
-
-// Now returns the current local time.
-func Now() Time {
-	sec, nsec := now()
-	return Time{sec + unixToInternal, uintptr(nsec), Local}
-}
-
-// UTC returns t with the location set to UTC.
-func (t Time) UTC() Time {
-	t.loc = UTC
-	return t
-}
-
-// Local returns t with the location set to local time.
-func (t Time) Local() Time {
-	t.loc = Local
-	return t
-}
-
-// In returns t with the location information set to loc.
-//
-// In panics if loc is nil.
-func (t Time) In(loc *Location) Time {
-	if loc == nil {
-		panic("time: missing Location in call to Time.In")
-	}
-	t.loc = loc
-	return t
-}
-
-// Location returns the time zone information associated with t.
-func (t Time) Location() *Location {
-	l := t.loc
-	if l == nil {
-		l = UTC
-	}
-	return l
-}
-
-// Zone computes the time zone in effect at time t, returning the abbreviated
-// name of the zone (such as "CET") and its offset in seconds east of UTC.
-func (t Time) Zone() (name string, offset int) {
-	name, offset, _, _, _ = t.loc.lookup(t.sec + internalToUnix)
-	return
-}
-
-// Unix returns t as a Unix time, the number of seconds elapsed
-// since January 1, 1970 UTC.
-func (t Time) Unix() int64 {
-	return t.sec + internalToUnix
-}
-
-// UnixNano returns t as a Unix time, the number of nanoseconds elapsed
-// since January 1, 1970 UTC. The result is undefined if the Unix time
-// in nanoseconds cannot be represented by an int64. Note that this
-// means the result of calling UnixNano on the zero Time is undefined.
-func (t Time) UnixNano() int64 {
-	return (t.sec+internalToUnix)*1e9 + int64(t.nsec)
-}
-
-const timeBinaryVersion byte = 1
-
-// MarshalBinary implements the encoding.BinaryMarshaler interface.
-func (t Time) MarshalBinary() ([]byte, error) {
-	var offsetMin int16 // minutes east of UTC. -1 is UTC.
-
-	if t.Location() == &utcLoc {
-		offsetMin = -1
-	} else {
-		_, offset := t.Zone()
-		if offset%60 != 0 {
-			return nil, errors.New("Time.MarshalBinary: zone offset has fractional minute")
-		}
-		offset /= 60
-		if offset < -32768 || offset == -1 || offset > 32767 {
-			return nil, errors.New("Time.MarshalBinary: unexpected zone offset")
-		}
-		offsetMin = int16(offset)
-	}
-
-	enc := []byte{
-		timeBinaryVersion, // byte 0 : version
-		byte(t.sec >> 56), // bytes 1-8: seconds
-		byte(t.sec >> 48),
-		byte(t.sec >> 40),
-		byte(t.sec >> 32),
-		byte(t.sec >> 24),
-		byte(t.sec >> 16),
-		byte(t.sec >> 8),
-		byte(t.sec),
-		byte(t.nsec >> 24), // bytes 9-12: nanoseconds
-		byte(t.nsec >> 16),
-		byte(t.nsec >> 8),
-		byte(t.nsec),
-		byte(offsetMin >> 8), // bytes 13-14: zone offset in minutes
-		byte(offsetMin),
-	}
-
-	return enc, nil
-}
-
-// UnmarshalBinary implements the encoding.BinaryUnmarshaler interface.
-func (t *Time) UnmarshalBinary(data []byte) error {
-	buf := data
-	if len(buf) == 0 {
-		return errors.New("Time.UnmarshalBinary: no data")
-	}
-
-	if buf[0] != timeBinaryVersion {
-		return errors.New("Time.UnmarshalBinary: unsupported version")
-	}
-
-	if len(buf) != /*version*/ 1+ /*sec*/ 8+ /*nsec*/ 4+ /*zone offset*/ 2 {
-		return errors.New("Time.UnmarshalBinary: invalid length")
-	}
-
-	buf = buf[1:]
-	t.sec = int64(buf[7]) | int64(buf[6])<<8 | int64(buf[5])<<16 | int64(buf[4])<<24 |
-		int64(buf[3])<<32 | int64(buf[2])<<40 | int64(buf[1])<<48 | int64(buf[0])<<56
-
-	buf = buf[8:]
-	t.nsec = uintptr(int32(buf[3]) | int32(buf[2])<<8 | int32(buf[1])<<16 | int32(buf[0])<<24)
-
-	buf = buf[4:]
-	offset := int(int16(buf[1])|int16(buf[0])<<8) * 60
-
-	if offset == -1*60 {
-		t.loc = &utcLoc
-	} else if _, localoff, _, _, _ := Local.lookup(t.sec + internalToUnix); offset == localoff {
-		t.loc = Local
-	} else {
-		t.loc = FixedZone("", offset)
-	}
-
-	return nil
-}
-
-// TODO(rsc): Remove GobEncoder, GobDecoder, MarshalJSON, UnmarshalJSON in Go 2.
-// The same semantics will be provided by the generic MarshalBinary, MarshalText,
-// UnmarshalBinary, UnmarshalText.
-
-// GobEncode implements the gob.GobEncoder interface.
-func (t Time) GobEncode() ([]byte, error) {
-	return t.MarshalBinary()
-}
-
-// GobDecode implements the gob.GobDecoder interface.
-func (t *Time) GobDecode(data []byte) error {
-	return t.UnmarshalBinary(data)
-}
-
-// MarshalJSON implements the json.Marshaler interface.
-// The time is a quoted string in RFC 3339 format, with sub-second precision added if present.
-func (t Time) MarshalJSON() ([]byte, error) {
-	if y := t.Year(); y < 0 || y >= 10000 {
-		// RFC 3339 is clear that years are 4 digits exactly.
-		// See golang.org/issue/4556#c15 for more discussion.
-		return nil, errors.New("Time.MarshalJSON: year outside of range [0,9999]")
-	}
-	return []byte(t.Format(`"` + RFC3339Nano + `"`)), nil
-}
-
-// UnmarshalJSON implements the json.Unmarshaler interface.
-// The time is expected to be a quoted string in RFC 3339 format.
-func (t *Time) UnmarshalJSON(data []byte) (err error) {
-	// Fractional seconds are handled implicitly by Parse.
-	*t, err = Parse(`"`+RFC3339+`"`, string(data))
-	return
-}
-
-// MarshalText implements the encoding.TextMarshaler interface.
-// The time is formatted in RFC 3339 format, with sub-second precision added if present.
-func (t Time) MarshalText() ([]byte, error) {
-	if y := t.Year(); y < 0 || y >= 10000 {
-		return nil, errors.New("Time.MarshalText: year outside of range [0,9999]")
-	}
-	return []byte(t.Format(RFC3339Nano)), nil
-}
-
-// UnmarshalText implements the encoding.TextUnmarshaler interface.
-// The time is expected to be in RFC 3339 format.
-func (t *Time) UnmarshalText(data []byte) (err error) {
-	// Fractional seconds are handled implicitly by Parse.
-	*t, err = Parse(RFC3339, string(data))
-	return
-}
-
-// Unix returns the local Time corresponding to the given Unix time,
-// sec seconds and nsec nanoseconds since January 1, 1970 UTC.
-// It is valid to pass nsec outside the range [0, 999999999].
-func Unix(sec int64, nsec int64) Time {
-	if nsec < 0 || nsec >= 1e9 {
-		n := nsec / 1e9
-		sec += n
-		nsec -= n * 1e9
-		if nsec < 0 {
-			nsec += 1e9
-			sec--
-		}
-	}
-	return Time{sec + unixToInternal, uintptr(nsec), Local}
-}
-
-func isLeap(year int) bool {
-	return year%4 == 0 && (year%100 != 0 || year%400 == 0)
-}
-
-// norm returns nhi, nlo such that
-//	hi * base + lo == nhi * base + nlo
-//	0 <= nlo < base
-func norm(hi, lo, base int) (nhi, nlo int) {
-	if lo < 0 {
-		n := (-lo-1)/base + 1
-		hi -= n
-		lo += n * base
-	}
-	if lo >= base {
-		n := lo / base
-		hi += n
-		lo -= n * base
-	}
-	return hi, lo
-}
-
-// Date returns the Time corresponding to
-//	yyyy-mm-dd hh:mm:ss + nsec nanoseconds
-// in the appropriate zone for that time in the given location.
-//
-// The month, day, hour, min, sec, and nsec values may be outside
-// their usual ranges and will be normalized during the conversion.
-// For example, October 32 converts to November 1.
-//
-// A daylight savings time transition skips or repeats times.
-// For example, in the United States, March 13, 2011 2:15am never occurred,
-// while November 6, 2011 1:15am occurred twice.  In such cases, the
-// choice of time zone, and therefore the time, is not well-defined.
-// Date returns a time that is correct in one of the two zones involved
-// in the transition, but it does not guarantee which.
-//
-// Date panics if loc is nil.
-func Date(year int, month Month, day, hour, min, sec, nsec int, loc *Location) Time {
-	if loc == nil {
-		panic("time: missing Location in call to Date")
-	}
-
-	// Normalize month, overflowing into year.
-	m := int(month) - 1
-	year, m = norm(year, m, 12)
-	month = Month(m) + 1
-
-	// Normalize nsec, sec, min, hour, overflowing into day.
-	sec, nsec = norm(sec, nsec, 1e9)
-	min, sec = norm(min, sec, 60)
-	hour, min = norm(hour, min, 60)
-	day, hour = norm(day, hour, 24)
-
-	y := uint64(int64(year) - absoluteZeroYear)
-
-	// Compute days since the absolute epoch.
-
-	// Add in days from 400-year cycles.
-	n := y / 400
-	y -= 400 * n
-	d := daysPer400Years * n
-
-	// Add in 100-year cycles.
-	n = y / 100
-	y -= 100 * n
-	d += daysPer100Years * n
-
-	// Add in 4-year cycles.
-	n = y / 4
-	y -= 4 * n
-	d += daysPer4Years * n
-
-	// Add in non-leap years.
-	n = y
-	d += 365 * n
-
-	// Add in days before this month.
-	d += uint64(daysBefore[month-1])
-	if isLeap(year) && month >= March {
-		d++ // February 29
-	}
-
-	// Add in days before today.
-	d += uint64(day - 1)
-
-	// Add in time elapsed today.
-	abs := d * secondsPerDay
-	abs += uint64(hour*secondsPerHour + min*secondsPerMinute + sec)
-
-	unix := int64(abs) + (absoluteToInternal + internalToUnix)
-
-	// Look for zone offset for t, so we can adjust to UTC.
-	// The lookup function expects UTC, so we pass t in the
-	// hope that it will not be too close to a zone transition,
-	// and then adjust if it is.
-	_, offset, _, start, end := loc.lookup(unix)
-	if offset != 0 {
-		switch utc := unix - int64(offset); {
-		case utc < start:
-			_, offset, _, _, _ = loc.lookup(start - 1)
-		case utc >= end:
-			_, offset, _, _, _ = loc.lookup(end)
-		}
-		unix -= int64(offset)
-	}
-
-	return Time{unix + unixToInternal, uintptr(nsec), loc}
-}
-
-// Truncate returns the result of rounding t down to a multiple of d (since the zero time).
-// If d <= 0, Truncate returns t unchanged.
-func (t Time) Truncate(d Duration) Time {
-	if d <= 0 {
-		return t
-	}
-	_, r := div(t, d)
-	return t.Add(-r)
-}
-
-// Round returns the result of rounding t to the nearest multiple of d (since the zero time).
-// The rounding behavior for halfway values is to round up.
-// If d <= 0, Round returns t unchanged.
-func (t Time) Round(d Duration) Time {
-	if d <= 0 {
-		return t
-	}
-	_, r := div(t, d)
-	if r+r < d {
-		return t.Add(-r)
-	}
-	return t.Add(d - r)
-}
-
-// div divides t by d and returns the quotient parity and remainder.
-// We don't use the quotient parity anymore (round half up instead of round to even)
-// but it's still here in case we change our minds.
-func div(t Time, d Duration) (qmod2 int, r Duration) {
-	neg := false
-	nsec := int32(t.nsec)
-	if t.sec < 0 {
-		// Operate on absolute value.
-		neg = true
-		t.sec = -t.sec
-		nsec = -nsec
-		if nsec < 0 {
-			nsec += 1e9
-			t.sec-- // t.sec >= 1 before the -- so safe
-		}
-	}
-
-	switch {
-	// Special case: 2d divides 1 second.
-	case d < Second && Second%(d+d) == 0:
-		qmod2 = int(nsec/int32(d)) & 1
-		r = Duration(nsec % int32(d))
-
-	// Special case: d is a multiple of 1 second.
-	case d%Second == 0:
-		d1 := int64(d / Second)
-		qmod2 = int(t.sec/d1) & 1
-		r = Duration(t.sec%d1)*Second + Duration(nsec)
-
-	// General case.
-	// This could be faster if more cleverness were applied,
-	// but it's really only here to avoid special case restrictions in the API.
-	// No one will care about these cases.
-	default:
-		// Compute nanoseconds as 128-bit number.
-		sec := uint64(t.sec)
-		tmp := (sec >> 32) * 1e9
-		u1 := tmp >> 32
-		u0 := tmp << 32
-		tmp = uint64(sec&0xFFFFFFFF) * 1e9
-		u0x, u0 := u0, u0+tmp
-		if u0 < u0x {
-			u1++
-		}
-		u0x, u0 = u0, u0+uint64(nsec)
-		if u0 < u0x {
-			u1++
-		}
-
-		// Compute remainder by subtracting r<<k for decreasing k.
-		// Quotient parity is whether we subtract on last round.
-		d1 := uint64(d)
-		for d1>>63 != 1 {
-			d1 <<= 1
-		}
-		d0 := uint64(0)
-		for {
-			qmod2 = 0
-			if u1 > d1 || u1 == d1 && u0 >= d0 {
-				// subtract
-				qmod2 = 1
-				u0x, u0 = u0, u0-d0
-				if u0 > u0x {
-					u1--
-				}
-				u1 -= d1
-			}
-			if d1 == 0 && d0 == uint64(d) {
-				break
-			}
-			d0 >>= 1
-			d0 |= (d1 & 1) << 63
-			d1 >>= 1
-		}
-		r = Duration(u0)
-	}
-
-	if neg && r != 0 {
-		// If input was negative and not an exact multiple of d, we computed q, r such that
-		//	q*d + r = -t
-		// But the right answers are given by -(q-1), d-r:
-		//	q*d + r = -t
-		//	-q*d - r = t
-		//	-(q-1)*d + (d - r) = t
-		qmod2 ^= 1
-		r = d - r
-	}
-	return
-}