mirror of https://github.com/CGAL/cgal
93 lines
2.9 KiB
C++
93 lines
2.9 KiB
C++
// Copyright (c) 1999,2000 Utrecht University (The Netherlands),
|
|
// ETH Zurich (Switzerland), Freie Universitaet Berlin (Germany),
|
|
// INRIA Sophia-Antipolis (France), Martin-Luther-University Halle-Wittenberg
|
|
// (Germany), Max-Planck-Institute Saarbruecken (Germany), RISC Linz (Austria),
|
|
// and Tel-Aviv University (Israel). All rights reserved.
|
|
//
|
|
// This file is part of CGAL (www.cgal.org); you can redistribute it and/or
|
|
// modify it under the terms of the GNU Lesser General Public License as
|
|
// published by the Free Software Foundation; version 2.1 of the License.
|
|
// See the file LICENSE.LGPL distributed with CGAL.
|
|
//
|
|
// Licensees holding a valid commercial license may use this file in
|
|
// accordance with the commercial license agreement provided with the software.
|
|
//
|
|
// This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
|
|
// WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
//
|
|
//
|
|
// Author(s) : Sylvain Pion
|
|
|
|
#ifndef CGAL_RESTRICTED_DOUBLE_H
|
|
#define CGAL_RESTRICTED_DOUBLE_H
|
|
|
|
// This file contains the description of the class Restricted_double.
|
|
// The goal of this class is to be run by some overloaded predicates,
|
|
// This is just a wrapper for a double, but with limited functionality,
|
|
// to detect non-intented use.
|
|
// It's the type over which is run the epsilon variant, and which throws
|
|
// the exceptions.
|
|
|
|
// TODO: I need to add some missing operators and functions, min/max...
|
|
|
|
#include <CGAL/basic.h>
|
|
// #include <CGAL/double.h>
|
|
|
|
CGAL_BEGIN_NAMESPACE
|
|
|
|
#ifdef CGAL_IA_CHECK_RESTRICT
|
|
struct Restricted_double
|
|
{
|
|
typedef Restricted_double Self;
|
|
struct unsafe_comparison {}; // Exception class.
|
|
|
|
Restricted_double () {}
|
|
Restricted_double (const double &d) : _d(d) {}
|
|
Restricted_double (const int &i) : _d(double(i)) {}
|
|
// Add operator= for efficiency.
|
|
Self operator+ (const Self &f) const { return _d+f._d; }
|
|
Self operator- (const Self &f) const { return _d-f._d; }
|
|
Self operator* (const Self &f) const { return _d*f._d; }
|
|
Self operator/ (const Self &f) const { return _d/f._d; }
|
|
Self operator- () const { return -_d; }
|
|
|
|
Self& operator+=(const Self &f) { return *this = _d + f._d; }
|
|
Self& operator-=(const Self &f) { return *this = _d - f._d; }
|
|
Self& operator*=(const Self &f) { return *this = _d * f._d; }
|
|
Self& operator/=(const Self &f) { return *this = _d / f._d; }
|
|
|
|
#if 0
|
|
bool operator< (const Self &f) const { return _d < f._d; }
|
|
#endif
|
|
double dbl () const { return _d; }
|
|
|
|
private:
|
|
double _d;
|
|
};
|
|
|
|
inline
|
|
Restricted_double
|
|
sqrt(const Restricted_double &f)
|
|
{ return CGAL_CLIB_STD::sqrt(f.dbl()); }
|
|
|
|
inline
|
|
Restricted_double
|
|
abs(const Restricted_double &f)
|
|
{ return CGAL_CLIB_STD::fabs(f.dbl()); }
|
|
|
|
inline
|
|
double
|
|
to_double(const Restricted_double &f)
|
|
{ return f.dbl(); }
|
|
|
|
#else
|
|
typedef double Restricted_double;
|
|
#endif
|
|
|
|
CGAL_END_NAMESPACE
|
|
|
|
#endif // CGAL_RESTRICTED_DOUBLE_H
|