public override DvAbsoluteQuantity <DvDateTime, DvDuration> Subtract(DvAmount <DvDuration> b)
{
DesignByContract.Check.Require(b is DvDuration, "b object must be a DvDuration instance");
DvDuration duration = b as DvDuration;
return(this.Subtract(duration));
}
protected override DvAmount <DvDuration> Plus(DvAmount <DvDuration> b)
{
DesignByContract.Check.Require(this.IsStrictlyComparableTo(b));
DvDuration bObj = b as DvDuration;
double result = this.Magnitude + bObj.Magnitude;
return(DvDuration.GetDurationByMagnitude(result));
}
public override DvAbsoluteQuantity <DvDate, DvDuration> Add(DvAmount <DvDuration> b)
{
DesignByContract.Check.Require(b is DvDuration, "b object must be a DvDuration instance");
DvDuration duration = b as DvDuration;
Iso8601Duration isoDuration = new Iso8601Duration(duration.Value);
Iso8601Date newIsoDate = this.isoDate.Add(isoDuration);
return(new DvDate(newIsoDate.ToString()));
}
