(** $Id: Tutorial.idl,v 1.4 1998/10/09 20:54:44 spreitze Exp $
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(* Last edited by Mike Spreitzer October 9, 1998 1:46 pm PDT *)

module Tutorial {

  exception DivideByZero {};

  interface Calculator {

    // Set the value of the calculator to _v_
    void SetValue (in double v);
    // Return the value of the calculator
    double GetValue ();
    // Adds _v_ to the calculator_s value
    void Add (in double v);
    // Subtracts _v_ from the calculator_s value
    void Subtract (in double v);
    // Multiplies the calculator_s value by _v_
    void Multiply (in double v);
    // Divides the calculator_s value by _v_
    void Divide (in double v) raises (DivideByZero);
  };

  interface Factory {

    // Create and return an instance of a Calculator object
    Calculator CreateCalculator();
  };
};
