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