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// Copyright (c) 2014
// INRIA Saclay-Ile de France (France)
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1/NewKernel_d/include/CGAL/NewKernel_d/Vector/array.h $
// $Id: include/CGAL/NewKernel_d/Vector/array.h b26b07a1242 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
// Author(s) : Marc Glisse
#ifndef CGAL_VECTOR_ARRAY_H
#define CGAL_VECTOR_ARRAY_H
#include <boost/type_traits/is_arithmetic.hpp>
#include <CGAL/Dimension.h>
#include <CGAL/NewKernel_d/utils.h>
#include <CGAL/array.h>
#include <boost/preprocessor/repetition.hpp>
#include <boost/preprocessor/repetition/enum.hpp>
#include <CGAL/NewKernel_d/Vector/determinant_of_points_from_vectors.h>
#include <CGAL/NewKernel_d/Vector/determinant_of_vectors_small_dim.h>
#include <CGAL/NewKernel_d/Vector/determinant_of_iterator_to_points_from_iterator_to_vectors.h>
#include <CGAL/NewKernel_d/Vector/determinant_of_iterator_to_points_from_points.h>
#include <CGAL/NewKernel_d/Vector/determinant_of_iterator_to_vectors_from_vectors.h>
namespace CGAL {
// May not be safe to use with dim!=max_dim.
// In that case, we should store the real dim next to the array.
template<class NT_,class Dim_,class Max_dim_=Dim_> struct Array_vector {
typedef NT_ NT;
typedef Dim_ Dimension;
typedef Max_dim_ Max_dimension;
template< class D2, class D3=D2 >
struct Rebind_dimension {
typedef Array_vector< NT, D2, D3 > Other;
};
template<class> struct Property : std::false_type {};
static const unsigned d_=Max_dim_::value;
static_assert(d_ != (unsigned)UNKNOWN_DIMENSION);
typedef std::array<NT,d_> Vector;
struct Construct_vector {
struct Dimension {
// Initialize with NaN if possible?
Vector operator()(unsigned CGAL_assertion_code(d)) const {
CGAL_assertion(d<=d_);
return Vector();
}
};
struct Iterator {
template<typename Iter>
Vector operator()(unsigned CGAL_assertion_code(d),Iter const& f,Iter const& e) const {
CGAL_assertion(d==(unsigned) std::distance(f,e));
CGAL_assertion(d<=d_);
//TODO: optimize for forward iterators
Vector a;
CGAL_assume(f!=e);
std::copy(f,e,a.begin());
return a;
}
};
#if 0
struct Iterator_add_one {
template<typename Iter>
Vector operator()(unsigned d,Iter const& f,Iter const& e) const {
CGAL_assertion(d==std::distance(f,e)+1);
CGAL_assertion(d<=d_);
//TODO: optimize
Vector a;
std::copy(f,e,a.begin());
a.back()=1;
return a;
}
};
#endif
struct Iterator_and_last {
template<typename Iter,typename T>
Vector operator()(unsigned CGAL_assertion_code(d),Iter const& f,Iter const& e,T&& t) const {
CGAL_assertion(d==std::distance(f,e)+1);
CGAL_assertion(d<=d_);
//TODO: optimize for forward iterators
Vector a;
std::copy(f,e,a.begin());
a.back()=std::forward<T>(t);
return a;
}
};
struct Values {
template<class...U>
Vector operator()(U&&...u) const {
static_assert(sizeof...(U)<=d_,"too many arguments");
Vector a={{forward_safe<NT,U>(u)...}};
return a;
}
};
struct Values_divide {
template<class H,class...U>
Vector operator()(H const& h,U&&...u) const {
static_assert(sizeof...(U)<=d_,"too many arguments");
Vector a={{Rational_traits<NT>().make_rational(std::forward<U>(u),h)...}};
return a;
}
};
};
typedef NT const* Vector_const_iterator;
static Vector_const_iterator vector_begin(Vector const&a){
return &a[0];
}
static Vector_const_iterator vector_end(Vector const&a){
return &a[0]+d_; // Don't know the real size
}
static unsigned size_of_vector(Vector const&){
return d_; // Don't know the real size
}
};
// Do not try to instantiate the above
template<class NT_,class Max_dim_> struct Array_vector<NT_,Dynamic_dimension_tag,Max_dim_> {};
}
#endif
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