| public static is_leap_year ( int year ) : bool | ||
| year | int | An integer representing the Gregorian year. /// |
| Résultat | bool | |
public static int fixed_from_dmy(int day, int month, int year)
{
int num = 0;
num += 365 * (year - 1);
num += CCMath.div(year - 1, 4);
num -= CCMath.div(year - 1, 100);
num += CCMath.div(year - 1, 400);
num += CCMath.div(367 * month - 362, 12);
if (month > 2)
{
num += ((!CCGregorianCalendar.is_leap_year(year)) ? -2 : -1);
}
return(num + day);
}
public static void my_from_fixed(out int month, out int year, int date)
{
year = CCGregorianCalendar.year_from_fixed(date);
int num = date - CCGregorianCalendar.fixed_from_dmy(1, 1, year);
int num2;
if (date < CCGregorianCalendar.fixed_from_dmy(1, 3, year))
{
num2 = 0;
}
else if (CCGregorianCalendar.is_leap_year(year))
{
num2 = 1;
}
else
{
num2 = 2;
}
month = CCMath.div(12 * (num + num2) + 373, 367);
}
/// <summary>Determines whether the specified year in the specified era is a leap year.</summary>
/// <returns>true if the specified year is a leap year; otherwise, false.</returns>
/// <param name="year">An integer that represents the year. </param>
/// <param name="era">An integer that represents the era. </param>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="year" /> is outside the range supported by the calendar.-or- <paramref name="era" /> is outside the range supported by the calendar. </exception>
public override bool IsLeapYear(int year, int era)
{
int year2 = this.M_CheckYEG(year, ref era);
return(CCGregorianCalendar.is_leap_year(year2));
}
/// <summary>
/// Overridden. Tells whether the given year
/// is a leap year.
/// </summary>
/// <param name="year">An integer that specifies the year in the
/// given era.
/// </param>
/// <param name="era">An integer that specifies the era.
/// </param>
/// <returns>A boolean that tells whether the given year is a leap
/// year.
/// </returns>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// The exception is thrown, if the year or era is not
/// valid.
/// </exception>
public override bool IsLeapYear(int year, int era) {
int gregorianYear = M_CheckYEG(year, ref era);
return CCGregorianCalendar.is_leap_year(gregorianYear);
}
public static bool IsLeapDay(int year, int month, int day)
{
return(CCGregorianCalendar.is_leap_year(year) && month == 2 && day == 29);
}
