TermConstant.h

/* 
 * File:   TermConstant.h
 * 
 * Copyright 2012 Heinrich Schuchardt <xypron.glpk@gmx.de>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef TERMCONSTANT_H
#define TERMCONSTANT_H

#include "Term.h"

class TermConstant : public Term {
public:
    static TermConstant* create(Problem* problem, const double value) throw
    (ProblemMismatchException);
    Term* differentiate(TermVariable* variable) throw
    (ProblemMismatchException);
    double evaluate();
    bool less(const Term* term) const;
    std::string toString() const;
protected:
    double eval(
            const DoubleVector* variableValues,
            TermValueSet* termValues);
    TermConstant(Problem* problem, const double value);
    virtual ~TermConstant();
private:
    double value_;
};

#endif  /* TERMCONSTANT_H */