/// <summary>
/// Adds milliseconds to this instance of DateTime
/// </summary>
/// <param name="milliseconds"></param>
/// <returns></returns>
public DateTime AddMilliseconds(double milliseconds)
{
DateTime universal = ToUniversalTime();
double whole = System.Math.Floor(milliseconds);
double fractional = milliseconds - whole;
DateTime result = universal.AddNanosecondsInternal
(fractional * DateTimeHelper.Milliseconds2Nanoseconds);
result = result.AddMillisecondsInternal(whole);
return(result.ToTimeZone(TimeZone));
}
/// <summary>
/// Adds nanoseconds to this instance of DateTime
/// </summary>
/// <param name="nanoseconds"></param>
/// <returns></returns>
private DateTime AddNanosecondsInternal(double nanoseconds)
{
double carry;
int newValue = DateTimeHelper.AddPlaceValues(m_nanosecond, nanoseconds,
DateTimeHelper.Milliseconds2Nanoseconds, out carry);
DateTime result = new DateTime(m_base, newValue, Type.TimeZone.UTC, true);
if (carry == 0)
{
return(result);
}
else
{
return(result.AddMillisecondsInternal(carry));
}
}