RealAlgebraicNumberNR.h

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/*
 * GiNaCRA - GiNaC Real Algebra package
 * Copyright (C) 2010-2012  Ulrich Loup, Joachim Redies, Sebastian Junges
 *
 * This file is part of GiNaCRA.
 *
 * GiNaCRA is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * GiNaCRA is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GiNaCRA.  If not, see <http://www.gnu.org/licenses/>.
 *
 */


#ifndef GINACRA_NUMERICREPRESENTATION_H
#define GINACRA_NUMERICREPRESENTATION_H

#include <ginac/ginac.h>

#include "RealAlgebraicNumber.h"
#include "RationalUnivariatePolynomial.h"

namespace GiNaCRA
{
    class RealAlgebraicNumberNR:
        public RealAlgebraicNumber,
        public numeric
    {
        public:

            // Con- and destructors //

            RealAlgebraicNumberNR( const numeric& n, bool isRoot = true );

            RealAlgebraicNumberNR( const RealAlgebraicNumberNR& n );

            RealAlgebraicNumberPtr clone() const
            {
                return RealAlgebraicNumberPtr( new RealAlgebraicNumberNR( *this ));
            }

            // Operations //

            GiNaC::sign sgn() const;

            GiNaC::sign sgn( const RationalUnivariatePolynomial& p ) const;

            const numeric approximateValue() const
            {
                return GiNaC::ex_to<numeric>( *this );
            }

        protected:

            // Methods from basic //

            void do_print( const print_context& c, unsigned level = 0 ) const;

    };

    typedef std::tr1::shared_ptr<RealAlgebraicNumberNR> RealAlgebraicNumberNRPtr;

}

#endif