123 lines
4.3 KiB
C++
Executable File
123 lines
4.3 KiB
C++
Executable File
// Copyright (c) 2008 Max-Planck-Institute Saarbruecken (Germany)
|
|
//
|
|
// 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; either version 3 of the License,
|
|
// or (at your option) any later version.
|
|
//
|
|
// 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.
|
|
//
|
|
// $URL$
|
|
// $Id$
|
|
// SPDX-License-Identifier: LGPL-3.0+
|
|
//
|
|
//
|
|
// Author(s) : Arno Eigenwillig <arno@mpi-inf.mpg.de>
|
|
// Michael Hemmer <hemmer@informatik.uni-mainz.de>
|
|
//
|
|
// ============================================================================
|
|
|
|
// TODO: The comments are all original EXACUS comments and aren't adapted. So
|
|
// they may be wrong now.
|
|
|
|
|
|
#ifndef CGAL_POLYNOMIAL_REAL_EMBEDDABLE_TRAITS_H
|
|
#define CGAL_POLYNOMIAL_REAL_EMBEDDABLE_TRAITS_H
|
|
|
|
#include <CGAL/basic.h>
|
|
|
|
namespace CGAL {
|
|
|
|
namespace internal {
|
|
template< class Polynomial , class TAG> class Real_embeddable_traits_poly_base;
|
|
|
|
template< class NT , class TAG> class Real_embeddable_traits_poly_base< Polynomial<NT>, TAG >
|
|
: public INTERN_RET::Real_embeddable_traits_base< Polynomial<NT> , CGAL::Tag_false > {};
|
|
|
|
// Real embeddable traits
|
|
// TODO: Polynomials aren't Real_embeddable! But for debugging and testing
|
|
// reasons, the real embeddable functors are provided.
|
|
template< class NT > class Real_embeddable_traits_poly_base< Polynomial<NT>, CGAL::Tag_true >
|
|
: public INTERN_RET::Real_embeddable_traits_base< Polynomial<NT> , CGAL::Tag_false > {
|
|
public:
|
|
|
|
typedef Tag_false Is_real_embeddable;
|
|
|
|
class Abs {
|
|
public:
|
|
typedef Polynomial<NT> argument_type;
|
|
typedef Polynomial<NT> result_type;
|
|
Polynomial<NT> operator()( const Polynomial<NT>& x ) const {
|
|
return x.abs();
|
|
}
|
|
};
|
|
|
|
class Sgn {
|
|
public:
|
|
typedef Polynomial<NT> argument_type;
|
|
typedef CGAL::Sign result_type;
|
|
CGAL::Sign operator()( const Polynomial<NT>& x ) const {
|
|
return x.sign();
|
|
}
|
|
};
|
|
|
|
class Compare {
|
|
public:
|
|
typedef Polynomial<NT> first_argument_type;
|
|
typedef Polynomial<NT> second_argument_type;
|
|
typedef CGAL::Comparison_result result_type;
|
|
|
|
CGAL::Comparison_result operator()(
|
|
const Polynomial<NT>& x,
|
|
const Polynomial<NT>& y ) const {
|
|
return x.compare(y);
|
|
}
|
|
|
|
CGAL_IMPLICIT_INTEROPERABLE_BINARY_OPERATOR_WITH_RT( Polynomial<NT>,
|
|
CGAL::Comparison_result )
|
|
};
|
|
|
|
class To_double {
|
|
public:
|
|
typedef typename Real_embeddable_traits<NT>::To_double NT_to_double;
|
|
typedef Polynomial<typename NT_to_double::result_type> result_type;
|
|
typedef Polynomial<NT> argument_type;
|
|
result_type operator()( const Polynomial<NT>& x ) const {
|
|
CGAL_precondition(x.degree() >= 0);
|
|
NT_to_double to_double;
|
|
return result_type(
|
|
::boost::make_transform_iterator(x.begin(),to_double),
|
|
::boost::make_transform_iterator(x.end() ,to_double));
|
|
}
|
|
};
|
|
|
|
class To_interval {
|
|
public:
|
|
typedef typename Real_embeddable_traits<NT>::To_interval NT_to_interval;
|
|
typedef Polynomial<typename NT_to_interval::result_type> result_type;
|
|
typedef Polynomial<NT> argument_type;
|
|
result_type operator()( const Polynomial<NT>& x ) const {
|
|
CGAL_precondition( x.degree() >= 0 );
|
|
NT_to_interval to_interval;
|
|
return result_type(
|
|
::boost::make_transform_iterator(x.begin(),to_interval),
|
|
::boost::make_transform_iterator(x.end() ,to_interval));
|
|
}
|
|
};
|
|
};
|
|
} // namespace internal
|
|
|
|
template <typename NT>
|
|
class Real_embeddable_traits<Polynomial<NT> >
|
|
:public internal::Real_embeddable_traits_poly_base<
|
|
Polynomial<NT>,
|
|
typename Real_embeddable_traits<typename internal::Innermost_coefficient_type<NT>::Type>::Is_real_embeddable>
|
|
{};
|
|
|
|
} //namespace CGAL
|
|
#endif // CGAL_POLYNOMIAL_REAL_EMBEDDABLE_TRAITS_H
|