#ifndef M_TGT_
# define M_TGT_ T_Self
#endif

template< ptrdiff_t Direction >
class T_ConstIterator_ : public std::iterator<
			std::random_access_iterator_tag , Type >
{
    private:
	M_TGT_ const* array_;
	ptrdiff_t pos_;

    public:
	T_ConstIterator_( M_TGT_ const& array ,
			const ptrdiff_t pos ) noexcept;

	T_ConstIterator_( typename M_TGT_::T_Iterator const& iterator ) noexcept;
	T_ConstIterator_& operator =(
			typename M_TGT_::T_Iterator const& iterator ) noexcept;

	M_ITER_CONS_DEF( T_ConstIterator_ );
	M_ITER_CONS_COPY( T_ConstIterator_ );
	M_ITER_SWAP( T_ConstIterator_ );
	M_ITER_CMP_ALL( T_ConstIterator_ );
	M_ITER_DEREF_RANDOM( Type const& , Type const* );
	M_ITER_OPS_RANDOM( T_ConstIterator_ );

	bool valid( ) const noexcept;
	M_TGT_* target( ) const noexcept;
	ptrdiff_t pos( ) const noexcept;
};
using T_ConstIterator = T_ConstIterator_< 1 >;
using T_ConstReverseIterator = T_ConstIterator_< -1 >;


#undef M_TGT_