public Quantity Convert(Unit u)
{
var a = Unit.ToBase(amount);
a = u.FromBase(a);
return(new Quantity(a, u));
}
private double ConvertTo(double d, Unit u)
{
if (ReferenceEquals(null, u))
{
return(double.NaN);
}
if (!IsSameMeasure(u))
{
return(double.NaN);
}
d = Unit.ToBase(d);
return(u.FromBase(d));
}
public Quantity Subtract(Quantity q)
{
var u1 = Unit;
var u2 = q.Unit;
if (u1.Measure.Name != u2.Measure.Name)
{
return(new Quantity());
}
var a = Unit.ToBase(amount);
a = a - q.Unit.ToBase(q.amount);
return(new Quantity(q.Unit.FromBase(a), q.Unit));
}