number.h

由matlab开发的hybrid系统的描述语言

/*
	HYSDEL
	Copyright (C) 1999-2002  Fabio D. Torrisi

	This file is part of HYSDEL.
    
	HYSDEL 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 2 of the License, or (at your option) any later version.

	HYSDEL 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 this library; if not, write to the Free Software
	Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

	CONTACT INFORMATION
	===================
	Fabio D. Torrisi
	ETH Zentrum
	Physikstrasse. 3 ETL,
	CH-8032 Zurich
	Switzerland
	mailto:[e-mail] (preferred)
*/

#ifndef D_NUMBER
#define D_NUMBER
#ifndef STD_NS
#define STD_NS
using namespace std;
#endif

#include "string"

#include "OO_consts.h"

/** stores a Number: either a double or a bool */
class Number {
public:
	/** copy the Number */
	virtual Number * clone() const = 0;

	virtual ~Number() { }

	/** is it bool or real? */
	virtual Symb_type get_type() const = 0;

	/** cast the number to a string */
	virtual string to_matlab() const = 0;
};
#endif //D_NUMBER