#if !defined(_LOGEXPR_H_)
#define _LOGEXPR_H_

// LOGICAL EXPRESSIONS

#include "expression.h"

class and_expression: public binary_operator_expression {
   public:
     and_expression(expression*, expression*);
     double evaluate(double*) const;

     expression* clone() const;
     void print(ostream&) const;

     expression* simplify() const;
};

class or_expression: public binary_operator_expression {
   public:
     or_expression(expression*, expression*);
     double evaluate(double*) const;

     expression* clone() const;
     void print(ostream&) const;

     expression* simplify() const;
};

#endif