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#ifndef IVL_verireal_H
#define IVL_verireal_H
/*
* Copyright (c) 1999-2021 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form 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.
*
* This program 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 program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
# include "config.h"
#ifdef HAVE_IOSFWD
# include <iosfwd>
#else
# include <iostream>
#endif
class verinum;
/*
* This class holds a floating point decimal number. The number is
* stored as an integer mantissa and a power of 10. The mantissa is an
* integer so that decimal numbers in the source (which are decimal)
* can be stored exactly.
*/
class verireal {
friend std::ostream& operator<< (std::ostream&, const verireal&);
friend verireal operator+ (const verireal&, const verireal&);
friend verireal operator- (const verireal&, const verireal&);
friend verireal operator* (const verireal&, const verireal&);
friend verireal operator/ (const verireal&, const verireal&);
friend verireal operator% (const verireal&, const verireal&);
// Unary minus.
friend verireal operator- (const verireal&);
public:
explicit verireal();
explicit verireal(const char*text);
explicit verireal(long val);
explicit verireal(double val);
~verireal();
// Return the value of the floating point number as an
// integer, rounded as needed. The shift is the power of 10 to
// multiply the value before calculating the result. So for
// example if the value is 2.5 and shift == 1, the result
// is 25.
long as_long() const;
int64_t as_long64(int shift =0) const;
double as_double() const;
private:
double value_;
};
extern std::ostream& operator<< (std::ostream&, const verireal&);
extern verireal operator* (const verireal&, const verireal&);
extern verireal operator/ (const verireal&, const verireal&);
extern verireal operator% (const verireal&, const verireal&);
extern verireal operator- (const verireal&);
#endif /* IVL_verireal_H */
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