public static CurrencyBase operator +(CurrencyBase x, CurrencyBase y)
{
if (x.IsVariable || y.IsVariable)
throw new ArithmeticException("Cannot add variable Currency!");
CurrencyBase cb = new CurrencyBase(x.Value);
cb.Value += y.Value;
if (cb.Value < 0)
cb.Value = 0;
return cb;
}
public static CurrencyBase operator +(CurrencyBase x, CurrencyBase y)
{
if (x.IsVariable || y.IsVariable)
{
throw new ArithmeticException("Cannot add variable Currency!");
}
CurrencyBase cb = new CurrencyBase(x.Value);
cb.Value += y.Value;
if (cb.Value < 0)
{
cb.Value = 0;
}
return(cb);
}
public int CompareTo(CurrencyBase other)
{
// Check for null
if (ReferenceEquals(other, null))
{
return(-1);
}
// Check for same reference
if (ReferenceEquals(this, other))
{
return(0);
}
if (this.IsVariable != other.IsVariable)
{
return(this.IsVariable.CompareTo(other.IsVariable));
}
return(this.Value.CompareTo(other.Value));
}
public int CompareTo(CurrencyBase other)
{
// Check for null
if (ReferenceEquals(other, null))
return -1;
// Check for same reference
if (ReferenceEquals(this, other))
return 0;
if (this.IsVariable != other.IsVariable)
return this.IsVariable.CompareTo(other.IsVariable);
return this.Value.CompareTo(other.Value);
}