com.tencent.kona.sun.util.calendar

Class CalendarUtils

java.lang.Object

com.tencent.kona.sun.util.calendar.CalendarUtils

public class CalendarUtils
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
CalendarUtils()

Method Summary

Modifier and Type	Method and Description
static int	amod(int x, int y)
static long	amod(long x, long y)
static int	floorDivide(int n, int d) Divides two integers and returns the floor of the quotient.
static int	floorDivide(int n, int d, int[] r) Divides two integers and returns the floor of the quotient and the modulus remainder.
static int	floorDivide(long n, int d, int[] r) Divides two integers and returns the floor of the quotient and the modulus remainder.
static long	floorDivide(long n, long d) Divides two integers and returns the floor of the quotient.
static boolean	isGregorianLeapYear(int gregorianYear) Returns whether the specified year is a leap year in the Gregorian calendar system.
static boolean	isJulianLeapYear(int normalizedJulianYear) Returns whether the specified year is a leap year in the Julian calendar system.
static int	mod(int x, int y)
static long	mod(long x, long y)
static java.lang.StringBuffer	sprintf0d(java.lang.StringBuffer sb, int value, int width)
static java.lang.StringBuilder	sprintf0d(java.lang.StringBuilder sb, int value, int width) Mimics sprintf(buf, "%0*d", decaimal, width).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CalendarUtils

public CalendarUtils()

Method Detail

isGregorianLeapYear

public static final boolean isGregorianLeapYear(int gregorianYear)

Returns whether the specified year is a leap year in the Gregorian calendar system.

Parameters:

gregorianYear - a Gregorian calendar year

Returns:

true if the given year is a leap year in the Gregorian calendar system.

See Also:

CalendarDate.isLeapYear()

isJulianLeapYear

public static final boolean isJulianLeapYear(int normalizedJulianYear)

Returns whether the specified year is a leap year in the Julian calendar system. The year number must be a normalized one (e.g., 45 B.C.E. is 1-45).

Parameters:

normalizedJulianYear - a normalized Julian calendar year

Returns:

true if the given year is a leap year in the Julian calendar system.

See Also:

CalendarDate.isLeapYear()

floorDivide

public static final long floorDivide(long n,
                                     long d)

Divides two integers and returns the floor of the quotient. For example, floorDivide(-1, 4) returns -1 while -1/4 is 0.

Parameters:

n - the numerator

d - a divisor that must be greater than 0

Returns:

the floor of the quotient

floorDivide

public static final int floorDivide(int n,
                                    int d)

Divides two integers and returns the floor of the quotient. For example, floorDivide(-1, 4) returns -1 while -1/4 is 0.

Parameters:

n - the numerator

d - a divisor that must be greater than 0

Returns:

the floor of the quotient

floorDivide

public static final int floorDivide(int n,
                                    int d,
                                    int[] r)

Divides two integers and returns the floor of the quotient and the modulus remainder. For example, floorDivide(-1,4) returns -1 with 3 as its remainder, while -1/4 is 0 and -1%4 is -1.

Parameters:

n - the numerator

d - a divisor which must be > 0

r - an array of at least one element in which the value mod(n, d) is returned.

Returns:

the floor of the quotient.

floorDivide

public static final int floorDivide(long n,
                                    int d,
                                    int[] r)

Divides two integers and returns the floor of the quotient and the modulus remainder. For example, floorDivide(-1,4) returns -1 with 3 as its remainder, while -1/4 is 0 and -1%4 is -1.

Parameters:

n - the numerator

d - a divisor which must be > 0

r - an array of at least one element in which the value mod(n, d) is returned.

Returns:

the floor of the quotient.

mod

public static final long mod(long x,
                             long y)

mod

public static final int mod(int x,
                            int y)

amod

public static final int amod(int x,
                             int y)

amod

public static final long amod(long x,
                              long y)

sprintf0d

public static final java.lang.StringBuilder sprintf0d(java.lang.StringBuilder sb,
                                                      int value,
                                                      int width)

Mimics sprintf(buf, "%0*d", decaimal, width).

sprintf0d

public static final java.lang.StringBuffer sprintf0d(java.lang.StringBuffer sb,
                                                     int value,
                                                     int width)