109 lines
2.5 KiB
C
109 lines
2.5 KiB
C
|
// Copyright (c) 2001-2006 INRIA Sophia-Antipolis (France).
|
||
|
|
// 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; 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) : Sylvain Pion
|
||
|
|
|
||
|
|
#ifndef CGAL_NT_CONVERTER_H
|
||
|
|
#define CGAL_NT_CONVERTER_H
|
||
|
|
|
||
|
|
#include <functional>
|
||
|
|
#include <CGAL/number_type_config.h>
|
||
|
|
#include <CGAL/number_utils.h>
|
||
|
|
|
||
|
|
template <bool> class Interval_nt;
|
||
|
|
|
||
|
|
namespace CGAL {
|
||
|
|
|
||
|
|
// A number type converter usable as default, using the conversion operator.
|
||
|
|
|
||
|
|
template < class NT1, class NT2 >
|
||
|
|
struct NT_converter
|
||
|
|
: public CGAL::cpp98::unary_function< NT1, NT2 >
|
||
|
|
{
|
||
|
|
NT2
|
||
|
|
operator()(const NT1 &a) const
|
||
|
|
{
|
||
|
|
return NT2(a);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
// Some specializations for :
|
||
|
|
// - double to call to_double().
|
||
|
|
// - Interval_nt<> to call to_interval().
|
||
|
|
// - NT1 == NT2 to return a reference instead of copying.
|
||
|
|
|
||
|
|
template < class NT1 >
|
||
|
|
struct NT_converter < NT1, NT1 >
|
||
|
|
: public CGAL::cpp98::unary_function< NT1, NT1 >
|
||
|
|
{
|
||
|
|
const NT1 &
|
||
|
|
operator()(const NT1 &a) const
|
||
|
|
{
|
||
|
|
return a;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
template < class NT1 >
|
||
|
|
struct NT_converter < NT1, double >
|
||
|
|
: public CGAL::cpp98::unary_function< NT1, double >
|
||
|
|
{
|
||
|
|
double
|
||
|
|
operator()(const NT1 &a) const
|
||
|
|
{
|
||
|
|
return CGAL_NTS to_double(a);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
template <>
|
||
|
|
struct NT_converter < double, double >
|
||
|
|
: public CGAL::cpp98::unary_function< double, double >
|
||
|
|
{
|
||
|
|
const double &
|
||
|
|
operator()(const double &a) const
|
||
|
|
{
|
||
|
|
return a;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
template < class NT1, bool b >
|
||
|
|
struct NT_converter < NT1, Interval_nt<b> >
|
||
|
|
: public CGAL::cpp98::unary_function< NT1, Interval_nt<b> >
|
||
|
|
{
|
||
|
|
Interval_nt<b>
|
||
|
|
operator()(const NT1 &a) const
|
||
|
|
{
|
||
|
|
return CGAL_NTS to_interval(a);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
template < bool b >
|
||
|
|
struct NT_converter < Interval_nt<b>, Interval_nt<b> >
|
||
|
|
: public CGAL::cpp98::unary_function< Interval_nt<b>, Interval_nt<b> >
|
||
|
|
{
|
||
|
|
const Interval_nt<b> &
|
||
|
|
operator()(const Interval_nt<b> &a) const
|
||
|
|
{
|
||
|
|
return a;
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
} //namespace CGAL
|
||
|
|
|
||
|
|
#endif // CGAL_NT_CONVERTER_H
|