chromium/third_party/icu/source/i18n/gregoimp.h

// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
 **********************************************************************
 * Copyright (c) 2003-2008, International Business Machines
 * Corporation and others.  All Rights Reserved.
 **********************************************************************
 * Author: Alan Liu
 * Created: September 2 2003
 * Since: ICU 2.8
 **********************************************************************
 */

#ifndef GREGOIMP_H
#define GREGOIMP_H
#include "unicode/utypes.h"
#if !UCONFIG_NO_FORMATTING

#include "unicode/ures.h"
#include "unicode/locid.h"
#include "putilimp.h"

U_NAMESPACE_BEGIN

/**
 * A utility class providing mathematical functions used by time zone
 * and calendar code.  Do not instantiate.  Formerly just named 'Math'.
 * @internal
 */
class ClockMath { … };

// Useful millisecond constants
#define kOneDay …
#define kOneHour …
#define kOneMinute …
#define kOneSecond …
#define kOneMillisecond …
#define kOneWeek …

// Epoch constants
#define kJan1_1JulianDay …

#define kEpochStartAsJulianDay …

#define kEpochYear …


#define kEarliestViableMillis …

#define kLatestViableMillis …

/**
 * The minimum supported Julian day.  This value is equivalent to
 * MIN_MILLIS.
 */
#define MIN_JULIAN …

/**
 * The minimum supported epoch milliseconds.  This value is equivalent
 * to MIN_JULIAN.
 */
#define MIN_MILLIS …

/**
 * The maximum supported Julian day.  This value is equivalent to
 * MAX_MILLIS.
 */
#define MAX_JULIAN …

/**
 * The maximum supported epoch milliseconds.  This value is equivalent
 * to MAX_JULIAN.
 */
#define MAX_MILLIS …

/**
 * A utility class providing proleptic Gregorian calendar functions
 * used by time zone and calendar code.  Do not instantiate.
 *
 * Note:  Unlike GregorianCalendar, all computations performed by this
 * class occur in the pure proleptic GregorianCalendar.
 */
class Grego { … };

inline double ClockMath::floorDivide(double numerator, double denominator) { … }

inline UBool Grego::isLeapYear(int32_t year) { … }

inline int8_t
Grego::monthLength(int32_t year, int32_t month) { … }

inline int8_t
Grego::previousMonthLength(int y, int m) { … }

inline void Grego::dayToFields(double day, int32_t& year, int32_t& month,
                               int32_t& dom, int32_t& dow, UErrorCode& status) { … }

inline double Grego::julianDayToMillis(int32_t julian)
{ … }

inline int32_t Grego::millisToJulianDay(double millis) { … }

inline int32_t Grego::gregorianShift(int32_t eyear) { … }

U_NAMESPACE_END

#endif // !UCONFIG_NO_FORMATTING
#endif // GREGOIMP_H

//eof