// © 2016 and later: Unicode, Inc. and others. // License & terms of use: http://www.unicode.org/copyright.html /* ******************************************************************************* * Copyright (C) 1997-2016, International Business Machines Corporation and * others. All Rights Reserved. ******************************************************************************* * * File GREGOCAL.CPP * * Modification History: * * Date Name Description * 02/05/97 clhuang Creation. * 03/28/97 aliu Made highly questionable fix to computeFields to * handle DST correctly. * 04/22/97 aliu Cleaned up code drastically. Added monthLength(). * Finished unimplemented parts of computeTime() for * week-based date determination. Removed quetionable * fix and wrote correct fix for computeFields() and * daylight time handling. Rewrote inDaylightTime() * and computeFields() to handle sensitive Daylight to * Standard time transitions correctly. * 05/08/97 aliu Added code review changes. Fixed isLeapYear() to * not cutover. * 08/12/97 aliu Added equivalentTo. Misc other fixes. Updated * add() from Java source. * 07/28/98 stephen Sync up with JDK 1.2 * 09/14/98 stephen Changed type of kOneDay, kOneWeek to double. * Fixed bug in roll() * 10/15/99 aliu Fixed j31, incorrect WEEK_OF_YEAR computation. * 10/15/99 aliu Fixed j32, cannot set date to Feb 29 2000 AD. * {JDK bug 4210209 4209272} * 11/15/99 weiv Added YEAR_WOY and DOW_LOCAL computation * to timeToFields method, updated kMinValues, kMaxValues & kLeastMaxValues * 12/09/99 aliu Fixed j81, calculation errors and roll bugs * in year of cutover. * 01/24/2000 aliu Revised computeJulianDay for YEAR YEAR_WOY WOY. ******************************************************************************** */ #include "unicode/utypes.h" #include <float.h> #if !UCONFIG_NO_FORMATTING #include "unicode/gregocal.h" #include "gregoimp.h" #include "umutex.h" #include "uassert.h" // ***************************************************************************** // class GregorianCalendar // ***************************************************************************** /** * Note that the Julian date used here is not a true Julian date, since * it is measured from midnight, not noon. This value is the Julian * day number of January 1, 1970 (Gregorian calendar) at noon UTC. [LIU] */ static const int16_t kNumDays[] = …; // 0-based, for day-in-year static const int16_t kLeapNumDays[] = …; // 0-based, for day-in-year static const int8_t kMonthLength[] = …; // 0-based static const int8_t kLeapMonthLength[] = …; // 0-based // setTimeInMillis() limits the Julian day range to +/-7F000000. // This would seem to limit the year range to: // ms=+183882168921600000 jd=7f000000 December 20, 5828963 AD // ms=-184303902528000000 jd=81000000 September 20, 5838270 BC // HOWEVER, CalendarRegressionTest/Test4167060 shows that the actual // range limit on the year field is smaller (~ +/-140000). [alan 3.0] static const int32_t kGregorianCalendarLimits[UCAL_FIELD_COUNT][4] = …; /* * <pre> * Greatest Least * Field name Minimum Minimum Maximum Maximum * ---------- ------- ------- ------- ------- * ERA 0 0 1 1 * YEAR 1 1 140742 144683 * MONTH 0 0 11 11 * WEEK_OF_YEAR 1 1 52 53 * WEEK_OF_MONTH 0 0 4 6 * DAY_OF_MONTH 1 1 28 31 * DAY_OF_YEAR 1 1 365 366 * DAY_OF_WEEK 1 1 7 7 * DAY_OF_WEEK_IN_MONTH -1 -1 4 5 * AM_PM 0 0 1 1 * HOUR 0 0 11 11 * HOUR_OF_DAY 0 0 23 23 * MINUTE 0 0 59 59 * SECOND 0 0 59 59 * MILLISECOND 0 0 999 999 * ZONE_OFFSET -12* -12* 12* 12* * DST_OFFSET 0 0 1* 1* * YEAR_WOY 1 1 140742 144683 * DOW_LOCAL 1 1 7 7 * </pre> * (*) In units of one-hour */ #if defined( U_DEBUG_CALSVC ) || defined (U_DEBUG_CAL) #include <stdio.h> #endif U_NAMESPACE_BEGIN #endif /* #if !UCONFIG_NO_FORMATTING */ //eof
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