mirror of https://github.com/CGAL/cgal
92 lines
2.6 KiB
C++
92 lines
2.6 KiB
C++
// ============================================================================
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//
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// Copyright (c) 1999,2000 The CGAL Consortium
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//
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// This software and related documentation is part of an INTERNAL release
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// of the Computational Geometry Algorithms Library (CGAL). It is not
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// intended for general use.
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//
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// ----------------------------------------------------------------------------
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//
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// release :
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// release_date :
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//
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// file : include/CGAL/Restricted_double.h
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// revision : $Revision$
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// revision_date : $Date$
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// package : Interval Arithmetic
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// author(s) : Sylvain Pion
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// coordinator : INRIA Sophia-Antipolis (<Mariette.Yvinec@sophia.inria.fr>)
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//
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// ============================================================================
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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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