public static int div_mod(out int remainder, int x, int y)
{
int num = CCMath.div(x, y);
remainder = x - y * num;
return(num);
}
public static int fixed_from_dmy(int day, int month, int year)
{
int num = 227013;
num += 354 * (year - 1);
num += CCMath.div(3 + 11 * year, 30);
num += (int)Math.Ceiling(29.5 * (double)(month - 1));
return(num + day);
}
public static bool is_leap_year(int year)
{
if (CCMath.mod(year, 4) != 0)
{
return(false);
}
int num = CCMath.mod(year, 400);
return(num != 100 && num != 200 && num != 300);
}
public static int year_from_fixed(int date)
{
int x = date - 1;
int num = CCMath.div_mod(out x, x, 146097);
int num2 = CCMath.div_mod(out x, x, 36524);
int num3 = CCMath.div_mod(out x, x, 1461);
int num4 = CCMath.div(x, 365);
int num5 = 400 * num + 100 * num2 + 4 * num3 + num4;
return((num2 != 4 && num4 != 4) ? (num5 + 1) : num5);
}
/// <summary>Returns a <see cref="T:System.DateTime" /> that is the specified number of months away from the specified <see cref="T:System.DateTime" />.</summary>
/// <returns>The <see cref="T:System.DateTime" /> that results from adding the specified number of months to the specified <see cref="T:System.DateTime" />.</returns>
/// <param name="time">The <see cref="T:System.DateTime" /> to which to add months. </param>
/// <param name="months">The number of months to add. </param>
/// <exception cref="T:System.ArgumentException">The resulting <see cref="T:System.DateTime" /> is outside the supported range. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> is less than -120000.-or- <paramref name="months" /> is greater than 120000. </exception>
public override DateTime AddMonths(DateTime time, int months)
{
int date = CCFixed.FromDateTime(time);
int day;
int num;
int num2;
CCJulianCalendar.dmy_from_fixed(out day, out num, out num2, date);
num += months;
num2 += CCMath.div_mod(out num, num, 12);
date = CCJulianCalendar.fixed_from_dmy(day, num, num2);
return(CCFixed.ToDateTime(date).Add(time.TimeOfDay));
}
/// <summary>
/// Overridden. Adds months to a given date.
/// </summary>
/// <param name="time">The
/// <see cref="T:System.DateTime"/> to which to add
/// months.
/// </param>
/// <param name="months">The number of months to add.</param>
/// <returns>A new <see cref="T:System.DateTime"/> value, that
/// results from adding <paramref name="months"/> to the specified
/// DateTime.</returns>
public override DateTime AddMonths(DateTime time, int months)
{
int rd = CCFixed.FromDateTime(time);
int day, month, year;
CCJulianCalendar.dmy_from_fixed(
out day, out month, out year, rd);
month += months;
year += CCMath.div_mod(out month, month, 12);
rd = CCJulianCalendar.fixed_from_dmy(day, month, year);
DateTime t = CCFixed.ToDateTime(rd);
return(t.Add(time.TimeOfDay));
}
public static int fixed_from_dmy(int day, int month, int year)
{
int num = (year >= 0) ? year : (year + 1);
int num2 = -2;
num2 += 365 * (num - 1);
num2 += CCMath.div(num - 1, 4);
num2 += CCMath.div(367 * month - 362, 12);
if (month > 2)
{
num2 += ((!CCJulianCalendar.is_leap_year(year)) ? -2 : -1);
}
return(num2 + day);
}
/// <summary>Calculates a date that is a specified number of months away from a specified initial date.</summary>
/// <returns>A <see cref="T:System.DateTime" /> that represents the date yielded by adding the number of months specified by the <paramref name="months" /> parameter to the date specified by the <paramref name="time" /> parameter.</returns>
/// <param name="time">The <see cref="T:System.DateTime" /> to which to add months. The <see cref="T:System.Globalization.UmAlQuraCalendar" /> class supports only dates from 04/30/1900 00.00.00 (Gregorian date) through 05/13/2029 23:59:59 (Gregorian date).</param>
/// <param name="months">The positive or negative number of months to add. </param>
/// <exception cref="T:System.ArgumentException">The resulting date is outside the range supported by the <see cref="T:System.Globalization.UmAlQuraCalendar" /> class. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> is less than -120,000 or greater than 120,000. -or-<paramref name="time" /> is outside the range supported by this calendar.</exception>
public override DateTime AddMonths(DateTime time, int months)
{
int num = this.M_FromDateTime(time);
int day;
int num2;
int num3;
CCHijriCalendar.dmy_from_fixed(out day, out num2, out num3, num);
num2 += months;
num3 += CCMath.div_mod(out num2, num2, 12);
num = CCHijriCalendar.fixed_from_dmy(day, num2, num3);
this.M_CheckFixedHijri("time", num);
return(this.M_ToDateTime(num).Add(time.TimeOfDay));
}
public static int elapsed_days(int year)
{
int num = CCMath.div(235 * year - 234, 19);
int num3;
int num2 = CCMath.div_mod(out num3, num, 1080);
int x = 204 + 793 * num3;
int x2 = 11 + 12 * num + 793 * num2 + CCMath.div(x, 1080);
int num4 = 29 * num + CCMath.div(x2, 24);
if (CCMath.mod(3 * (num4 + 1), 7) < 3)
{
num4++;
}
return(num4);
}
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);
}
/// <summary>
/// Overrideden. Adds months to a given date.
/// </summary>
/// <param name="time">The
/// <see cref="T:System.DateTime"/> to which to add
/// months.
/// </param>
/// <param name="months">The number of months to add.</param>
/// <returns>A new <see cref="T:System.DateTime"/> value, that
/// results from adding <paramref name="months"/> to the specified
/// DateTime.</returns>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// The exception is thrown if the
/// <see cref="T:System.DateTime"/> return value is not in the
/// supported range of the Hijri calendar.
/// </exception>
public override DateTime AddMonths(DateTime time, int months)
{
int rd = M_FromDateTime(time);
int day, month, year;
CCHijriCalendar.dmy_from_fixed(
out day, out month, out year, rd);
month += months;
year += CCMath.div_mod(out month, month, 12);
rd = CCHijriCalendar.fixed_from_dmy(day, month, year);
M_CheckFixedHijri("time", rd);
DateTime t = M_ToDateTime(rd);
return(t.Add(time.TimeOfDay));
}
/// <summary>Returns a <see cref="T:System.DateTime" /> that is offset the specified number of months from the specified <see cref="T:System.DateTime" />.</summary>
/// <returns>A <see cref="T:System.DateTime" /> that represents the date yielded by adding the number of months specified by the <paramref name="months" /> parameter to the date specified by the <paramref name="time" /> parameter.</returns>
/// <param name="time">The <see cref="T:System.DateTime" /> to which to add months. </param>
/// <param name="months">The positive or negative number of months to add. </param>
/// <exception cref="T:System.ArgumentException">The resulting <see cref="T:System.DateTime" /> is outside the supported range. </exception>
/// <exception cref="T:System.ArgumentOutOfRangeException">
/// <paramref name="months" /> is less than -120,000 or greater than 120,000. </exception>
public override DateTime AddMonths(DateTime time, int months)
{
int date = CCFixed.FromDateTime(time);
int day;
int num;
int num2;
this.dmy_from_fixed(out day, out num, out num2, date);
num += months;
num2 += CCMath.div_mod(out num, num, 12);
date = this.fixed_from_dmy(day, num, num2);
DateTime dateTime = CCFixed.ToDateTime(date).Add(time.TimeOfDay);
this.M_CheckDateTime(dateTime);
return(dateTime);
}
public static DateTime AddMonths(DateTime time, int months)
{
int date = CCFixed.FromDateTime(time);
int num;
int num2;
int num3;
CCGregorianCalendar.dmy_from_fixed(out num, out num2, out num3, date);
num2 += months;
num3 += CCMath.div_mod(out num2, num2, 12);
int daysInMonth = CCGregorianCalendar.GetDaysInMonth(num3, num2);
if (num > daysInMonth)
{
num = daysInMonth;
}
date = CCGregorianCalendar.fixed_from_dmy(num, num2, num3);
return(CCFixed.ToDateTime(date).Add(time.TimeOfDay));
}
public static void my_from_fixed(out int month, out int year, int date)
{
year = CCJulianCalendar.year_from_fixed(date);
int num = date - CCJulianCalendar.fixed_from_dmy(1, 1, year);
int num2;
if (date < CCJulianCalendar.fixed_from_dmy(1, 3, year))
{
num2 = 0;
}
else if (CCJulianCalendar.is_leap_year(year))
{
num2 = 1;
}
else
{
num2 = 2;
}
month = CCMath.div(12 * (num + num2) + 373, 367);
}
public static int year_from_fixed(int date)
{
int num = CCMath.div(4 * (date - -1) + 1464, 1461);
return((num > 0) ? num : (num - 1));
}
public static DayOfWeek day_of_week(int date)
{
return((DayOfWeek)CCMath.mod(date, 7));
}
public static int amod(int x, int y)
{
int num = CCMath.mod(x, y);
return((num != 0) ? num : y);
}
public static double amod(double x, double y)
{
double num = CCMath.mod(x, y);
return((num != 0.0) ? num : y);
}
public static bool short_kislev(int year)
{
return(CCMath.mod(CCHebrewCalendar.days_in_year(year), 10) == 3);
}
public static int mod(int x, int y)
{
return(x - y * CCMath.div(x, y));
}
public static bool is_leap_year(int year)
{
return(CCMath.mod(14 + 11 * year, 30) < 11);
}
public static int year_from_fixed(int date)
{
return(CCMath.div(30 * (date - 227014) + 10646, 10631));
}
public static bool is_leap_year(int year)
{
return(CCMath.mod(7 * year + 1, 19) < 7);
}
public static bool is_leap_year(int year)
{
return(CCMath.mod(year, 4) == ((year <= 0) ? 3 : 0));
}
public static bool long_heshvan(int year)
{
return(CCMath.mod(CCHebrewCalendar.days_in_year(year), 10) == 5);
}