cgal/Modular_arithmetic/include/CGAL/Modular_traits.h

85 lines
2.0 KiB
C++

//Author(s) : Michael Hemmer <mhemmer@uni-mainz.de>
#ifndef CGAL_MODULAR_TRAITS_H
#define CGAL_MODULAR_TRAITS_H 1
#include <CGAL/basic.h>
#include <CGAL/Modular.h>
#include <vector>
namespace CGAL {
/*! \ingroup CGAL_Modular_traits_spec
\brief A model of concept ModularTraits.
This is the definition of general class template,
for unsupported types. Note that this support is optional.
\see CGAL_Modular_traits_spec for supported types.
*/
template<class NT_>
class Modular_traits{
public:
typedef NT_ NT;
typedef ::CGAL::Tag_false Is_modularizable;
typedef ::CGAL::Null_functor Modular_NT;
typedef ::CGAL::Null_functor Modular_image;
typedef ::CGAL::Null_functor Modular_image_inv;
};
// The MODULAR_TRAITS specializations for some builtin types
// =========================================================================
/*! \ingroup CGAL_Modular_traits_spec
\brief Specialization of CGAL::Modular_traits for \c int.
A model of concept ModularTraits, supports \c int.
*/
template<>
class Modular_traits<int>{
public:
typedef int NT;
typedef ::CGAL::Tag_true Is_modularizable;
typedef Modular Modular_NT;
struct Modular_image{
Modular_NT operator()(int i){
return Modular_NT(i);
}
};
struct Modular_image_inv{
NT operator()(const Modular& x){
return x.get_value();
}
};
};
/*! \ingroup CGAL_Modular_traits_spec
\brief Specialization of CGAL::Modular_traits for \c long.
A model of concept ModularTraits, supports \c long.
*/
template<>
class Modular_traits<long>{
public:
typedef long NT;
typedef ::CGAL::Tag_true Is_modularizable;
typedef Modular Modular_NT;
struct Modular_image{
Modular_NT operator()(long i){
return Modular_NT(i);
}
};
struct Modular_image_inv{
NT operator()(const Modular& x){
return NT(x.get_value());
}
};
};
}///namespace CGAL
#endif //#ifnedef CGAL_MODULAR_TRAITS_H 1