/// <summary>Subtracts the evaluation of the right side from the evaluation of the left side and returns the result.</summary>
public override double Eval(VarMap v, FuncMap f)
{
double a = leftChild.Eval(v, f);
double b = rightChild.Eval(v, f);
return(a - b);
}
/// <summary>Raises the evaluation of the left side to the power of the evaluation of the right side and returns the result.</summary>
public override double Eval(VarMap v, FuncMap f)
{
double a = leftChild.Eval(v, f);
double b = rightChild.Eval(v, f);
return(MyMath.Pow(a, b));
}
/// <summary>Returns the value associated with the variable name in the VarMap.</summary>
public override double Eval(VarMap v, FuncMap f)
{
double val = v.GetValue(name);
if (negate)
{
val = -val;
}
return(val);
}
/// <summary>Evaluates each of the children, storing the result in an internal double array.</summary>
/// <remarks>
/// Evaluates each of the children, storing the result in an internal double array. The FuncMap is
/// used to obtain a Function object based on the name of this FuncNode. The function is passed
/// the double array and returns a result. If negate is true, the result is negated. The result
/// is then returned. The numParam passed to the function is the number of children of this FuncNode.
/// </remarks>
public override double Eval(VarMap v, FuncMap f)
{
int numParam = bag.Size();
for (int i = 0; i < numParam; i++)
{
of[i] = Child(i).Eval(v, f);
}
double result = f.GetFunction(name, numParam).Of(of, numParam);
if (negate)
{
result = -result;
}
return(result);
}
/// <summary>Returns the value.</summary>
public override double Eval(VarMap v, FuncMap f)
{
return(val);
}
/// <summary>Returns the result of evaluating the expression tree rooted at this node.</summary> public abstract double Eval(VarMap v, FuncMap f);
