static PeriodUnit()
{
Month = new PeriodUnit("month", "m");
Year = new PeriodUnit("year", "y", 12);
HalfMonth = new PeriodUnit("half-month", "half-month", 0.5m);
BiMontly = new PeriodUnit("bi-monthly", "bi-monthly", 2);
Quarter = new PeriodUnit("quarter", "quarter", 3);
HalfYear = new PeriodUnit("half-year", "half-year", 6);
}
/// <summary>Constructor for a period of [start, start + amount*term]</summary>
/// <param name="start">Start of a period</param>
/// <param name="amount">Number of terms</param>
/// <param name="term">Term (default Month)</param>
/// <param name="rounding">Rounding option</param>
/// <param name="decimals">Rate precision</param>
public TermsItem(DateTime start, uint amount = 1, PeriodUnit term = null, Rounding rounding = Rounding.None, int decimals = 0) :
base(start, end(start, amount, term), rounding, decimals)
{
Amount = amount;
Term = term ?? PeriodUnit.Month;
}
private static DateTime end(DateTime start, uint amount, PeriodUnit term) => start.AddMonths((int)(amount * (term ?? PeriodUnit.Month).AmountOfBaseUnits)).AddDays(-1);
/// <summary>Constructor</summary>
/// <param name="name">Name</param>
/// <param name="symbol">Symbol</param>
/// <param name="amount">Amount of reference units (1 for the base unit)</param>
/// <param name="reference">Reference Measure Unit (null for the base unit)</param>
/// <exception cref="ArgumentException">Amount must be positive</exception>
/// <exception cref="TypeInitializationException">Created unit and the reference unit must belong to the same measure equivalence class</exception>
/// <exception cref="TypeInitializationException">First unit of the equivalence class must have rate equal to 1</exception>
public PeriodUnit(string name, string symbol, decimal amount = 1, PeriodUnit reference = null) :
base(name, symbol, amount, reference)
{
}