private static DateTime Aux_GetRoundDate(this DateTime dt, TenorUnit tu)
{
int nb_units = dt.GetNumberOfUnit(tu);
switch (tu)
{
case TenorUnit.Hour:
case TenorUnit.Min:
case TenorUnit.Sec:
break;
case TenorUnit.Month:
case TenorUnit.Day:
nb_units -= 1;
break;
case TenorUnit.Year:
case TenorUnit.None:
nb_units = 0;
break;
}
dt = dt.AddTenor(new Tenor(-nb_units, tu));
TenorUnit tuN = tu.GetLowerUnit(skipWeek: true);
if (tuN == TenorUnit.None)
{
return(dt);
}
else
{
return(dt.Aux_GetRoundDate(tuN));
}
}
public static DateTime GetRoundDate(this DateTime dt, TenorUnit tu)
{
if (tu == TenorUnit.Week)
{
int daysOffset = ((int)dt.DayOfWeek == 0 ? 7 : (int)dt.DayOfWeek) - 1;
DateTime newDate = dt.AddDays(-daysOffset);
return(newDate.Aux_GetRoundDate(TenorUnit.Hour));
}
else if (tu == TenorUnit.Day)
{
//if (dt.Hour == 0 && dt.Minute == 0 && dt.Second == 0)
//return dt.AddDays(-1);
}
return(dt.Aux_GetRoundDate(tu.GetLowerUnit(skipWeek: true)));
}