/usr/include/CGAL/NT_converter.h is in libcgal-dev 4.2-5ubuntu1.
This file is owned by root:root, with mode 0o644.
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// 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.
//
// $URL$
// $Id$
//
//
// 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 std::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 std::unary_function< NT1, NT1 >
{
const NT1 &
operator()(const NT1 &a) const
{
return a;
}
};
template < class NT1 >
struct NT_converter < NT1, double >
: public std::unary_function< NT1, double >
{
double
operator()(const NT1 &a) const
{
return CGAL_NTS to_double(a);
}
};
template <>
struct NT_converter < double, double >
: public std::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 std::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 std::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
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