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// Copyright (c) 2017
// Utrecht University (The Netherlands),
// ETH Zurich (Switzerland),
// INRIA Sophia-Antipolis (France),
// Max-Planck-Institute Saarbruecken (Germany),
// and Tel-Aviv University (Israel). All rights reserved.
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1/Kernel_23/include/CGAL/Exact_kernel_selector.h $
// $Id: include/CGAL/Exact_kernel_selector.h b26b07a1242 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s) : Sylvain Pion,
// Mael Rouxel-Labbé
#ifndef CGAL_EXACT_KERNEL_SELECTOR_H
#define CGAL_EXACT_KERNEL_SELECTOR_H
// This class uses the Kernel tag to automatically choose
// whether Cartesian_converter or Homogeneous_converter should be used
#include <CGAL/Simple_cartesian.h>
#include <CGAL/Simple_homogeneous.h>
#include <CGAL/Number_types/internal/Exact_type_selector.h>
#include <CGAL/representation_tags.h>
#include <CGAL/Cartesian_converter.h>
#include <CGAL/Homogeneous_converter.h>
namespace CGAL {
template <class CK, class Rep = typename CK::Rep_tag /* (Cartesian_tag) */>
struct Exact_kernel_selector
{
typedef typename internal::Exact_field_selector<typename CK::RT>::Type Exact_nt;
typedef typename internal::Exact_ring_selector <typename CK::RT>::Type Exact_rt;
typedef Simple_cartesian<Exact_nt> Exact_kernel;
typedef Simple_cartesian<Exact_rt> Exact_kernel_rt;
typedef Cartesian_converter<CK, Exact_kernel> C2E;
typedef Cartesian_converter<CK, Exact_kernel_rt> C2E_rt;
typedef Cartesian_converter<Exact_kernel, CK> E2C;
typedef Cartesian_converter<Exact_kernel_rt, CK> E2C_rt;
};
template <class CK>
struct Exact_kernel_selector<CK, Homogeneous_tag>
{
typedef typename internal::Exact_ring_selector<typename CK::RT>::Type Exact_nt;
typedef Simple_homogeneous<Exact_nt> Exact_kernel;
typedef Exact_kernel Exact_kernel_rt;
typedef Homogeneous_converter<CK, Exact_kernel> C2E;
typedef C2E C2E_rt;
typedef Homogeneous_converter<Exact_kernel, CK> E2C;
typedef E2C E2C_rt;
};
} // namespace CGAL
#endif // CGAL_EXACT_KERNEL_SELECTOR_H
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