protected override DvAmount <DvQuantity> Plus(DvAmount <DvQuantity> b)
{
DesignByContract.Check.Require(this.IsStrictlyComparableTo(b));
DvQuantity bObj = b as DvQuantity;
return(new DvQuantity(this.Magnitude + bObj.Magnitude, this.Units));
}
protected override DvAmount <DvCount> Subtract(DvAmount <DvCount> b)
{
DesignByContract.Check.Require(this.IsStrictlyComparableTo(b));
DvCount bObj = b as DvCount;
return(new DvCount(this.Magnitude - bObj.Magnitude));
}
protected override DvAmount <DvProportion> Plus(DvAmount <DvProportion> b)
{
DesignByContract.Check.Require(this.IsStrictlyComparableTo(b));
DvProportion bObj = b as DvProportion;
double result = this.Magnitude() + bObj.Magnitude();
return(this.GetDvProportionByMagnitude(result));
}
protected abstract DvAmount <T> Plus(DvAmount <T> b);
protected abstract DvAmount <T> Subtract(DvAmount <T> b);
public abstract DvAbsoluteQuantity <T, U> Subtract(DvAmount <U> b);
public abstract DvAbsoluteQuantity <T, U> Add(DvAmount <U> b);
