From 16aaf4cda5fd97da12a7f1da8b0a5168fac2e289 Mon Sep 17 00:00:00 2001
From: vrouvrea <vrouvrea@636b058d-ea47-450e-bf9e-a15bfbe3eedb>
Date: Tue, 11 Oct 2016 13:57:03 +0000
Subject: Problem of merge with tangentialcomplex branch. Redo in an
 integration branch

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/tangential_integration@1701 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: fa029e8e90b3e203ea675f02098ec6fe95596f9f
---
 .../include/gudhi_patches/CGAL/NewKernel_d/utils.h | 306 +++++++++++++++++++++
 1 file changed, 306 insertions(+)
 create mode 100644 src/common/include/gudhi_patches/CGAL/NewKernel_d/utils.h

(limited to 'src/common/include/gudhi_patches/CGAL/NewKernel_d/utils.h')

diff --git a/src/common/include/gudhi_patches/CGAL/NewKernel_d/utils.h b/src/common/include/gudhi_patches/CGAL/NewKernel_d/utils.h
new file mode 100644
index 00000000..238a2230
--- /dev/null
+++ b/src/common/include/gudhi_patches/CGAL/NewKernel_d/utils.h
@@ -0,0 +1,306 @@
+// Copyright (c) 2014
+// INRIA Saclay-Ile de France (France)
+//
+// 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)     : Marc Glisse
+
+#ifndef CGAL_MARCUTILS
+#define CGAL_MARCUTILS
+
+#include <CGAL/config.h>
+
+#if defined(BOOST_MSVC)
+#  pragma warning(push)
+#  pragma warning(disable:4003) // not enough actual parameters for macro 'BOOST_PP_EXPAND_I'
+                                // http://lists.boost.org/boost-users/2014/11/83291.php
+#endif                          
+
+#ifdef CGAL_CXX11
+#include <type_traits>
+#include <utility>
+#define CGAL_FORWARDABLE(T) T&&
+#define CGAL_FORWARD(T,t) std::forward<T>(t)
+#define CGAL_MOVE(t) std::move(t)
+#define CGAL_CONSTEXPR constexpr
+#else
+#define CGAL_FORWARDABLE(T) T const&
+#define CGAL_FORWARD(T,t) t
+#define CGAL_MOVE(t) t
+#define CGAL_CONSTEXPR
+#endif
+#include <boost/utility/enable_if.hpp>
+#include <boost/preprocessor/repetition.hpp>
+#include <CGAL/Rational_traits.h>
+#include <CGAL/tuple.h>
+#include <boost/mpl/has_xxx.hpp>
+#include <boost/mpl/not.hpp>
+#include <boost/type_traits.hpp>
+
+#ifdef CGAL_CXX11
+#define CGAL_BOOSTD std::
+#else
+#define CGAL_BOOSTD boost::
+#endif
+
+namespace CGAL {
+namespace internal {
+	BOOST_MPL_HAS_XXX_TRAIT_DEF(type)
+}
+
+template <class T, class No, bool=internal::has_type<T>::value /*false*/>
+struct Has_type_different_from : boost::false_type {};
+template <class T, class No>
+struct Has_type_different_from <T, No, true>
+: boost::mpl::not_<boost::is_same<typename T::type, No> > {};
+
+
+	template <class T> struct Wrap_type { typedef T type; };
+
+	// tell a function f(a,b,c) that its real argument is a(b,c)
+	struct Eval_functor {};
+
+	// forget the first argument. Useful to make something dependant
+	// (and thus usable in SFINAE), although that's not a great design.
+	template<class A,class B> struct Second_arg {
+		typedef B type;
+	};
+
+	// like std::forward, except for basic types where it does a cast, to
+	// avoid issues with narrowing conversions
+#ifdef CGAL_CXX11
+	template<class T,class U,class V> inline
+		typename std::conditional<std::is_arithmetic<T>::value&&std::is_arithmetic<typename std::remove_reference<U>::type>::value,T,U&&>::type
+	       	forward_safe(V&& u) { return std::forward<U>(u); }
+#else
+	template<class T,class U> inline U const& forward_safe(U const& u) {
+		return u;
+	}
+#endif
+
+#ifdef CGAL_CXX11
+	template<class...> struct Constructible_from_each;
+	template<class To,class From1,class...From> struct Constructible_from_each<To,From1,From...>{
+		enum { value=std::is_convertible<From1,To>::value&&Constructible_from_each<To,From...>::value };
+	};
+	template<class To> struct Constructible_from_each<To>{
+		enum { value=true };
+	};
+#else
+// currently only used in C++0X code
+#endif
+
+	template<class T> struct Scale {
+#ifndef CGAL_CXX11
+		template<class> struct result;
+		template<class FT> struct result<Scale(FT)> {
+			typedef FT type;
+		};
+#endif
+		T const& scale;
+		Scale(T const& t):scale(t){}
+		template<class FT>
+#ifdef CGAL_CXX11
+		auto operator()(FT&& x)const->decltype(scale*std::forward<FT>(x))
+#else
+		FT operator()(FT const& x)const
+#endif
+		{
+			return scale*CGAL_FORWARD(FT,x);
+		}
+	};
+	template<class NT,class T> struct Divide {
+#if !defined(CGAL_CXX11) || !defined(BOOST_RESULT_OF_USE_DECLTYPE)
+		// requires boost > 1.44
+		// shouldn't be needed with C++0X
+		//template<class> struct result;
+		//template<class FT> struct result<Divide(FT)> {
+		//	typedef FT type;
+		//};
+		typedef NT result_type;
+#endif
+		T const& scale;
+		Divide(T const& t):scale(t){}
+		template<class FT>
+#ifdef CGAL_CXX11
+		//FIXME: gcc complains for Gmpq
+		//auto operator()(FT&& x)const->decltype(Rational_traits<NT>().make_rational(std::forward<FT>(x),scale))
+		NT operator()(FT&& x)const
+#else
+		NT operator()(FT const& x)const
+#endif
+		{
+			return Rational_traits<NT>().
+				make_rational(CGAL_FORWARD(FT,x),scale);
+		}
+	};
+
+	template <class NT> struct has_cheap_constructor : boost::is_arithmetic<NT>{};
+	template <bool p> struct has_cheap_constructor<Interval_nt<p> > {
+		        enum { value=true };
+	};
+
+	// like std::multiplies but allows mixing types
+	// in C++11 in doesn't need to be a template
+	template < class Ret >
+	struct multiplies {
+		template<class A,class B>
+#ifdef CGAL_CXX11
+		auto operator()(A&&a,B&&b)const->decltype(std::forward<A>(a)*std::forward<B>(b))
+#else
+		Ret operator()(A const& a, B const& b)const
+#endif
+		{
+			return CGAL_FORWARD(A,a)*CGAL_FORWARD(B,b);
+		}
+	};
+	template < class Ret >
+	struct division {
+		template<class A,class B>
+#ifdef CGAL_CXX11
+		auto operator()(A&&a,B&&b)const->decltype(std::forward<A>(a)/std::forward<B>(b))
+#else
+		Ret operator()(A const& a, B const& b)const
+#endif
+		{
+			return CGAL_FORWARD(A,a)/CGAL_FORWARD(B,b);
+		}
+	};
+
+#ifdef CGAL_CXX11
+	using std::decay;
+#else
+	template<class T> struct decay : boost::remove_cv<typename boost::decay<T>::type> {};
+#endif
+
+	template<class T,class U> struct Type_copy_ref { typedef U type; };
+	template<class T,class U> struct Type_copy_ref<T&,U> { typedef U& type; };
+#ifdef CGAL_CXX11
+	template<class T,class U> struct Type_copy_ref<T&&,U> { typedef U&& type; };
+#endif
+	template<class T,class U> struct Type_copy_cv { typedef U type; };
+	template<class T,class U> struct Type_copy_cv<T const,U> { typedef U const type; };
+	template<class T,class U> struct Type_copy_cv<T volatile,U> { typedef U volatile type; };
+	template<class T,class U> struct Type_copy_cv<T const volatile,U> { typedef U const volatile type; };
+
+	template<class T,class U> struct Type_copy_cvref :
+		Type_copy_ref<T,typename Type_copy_cv<typename boost::remove_reference<T>::type,U>::type> {};
+
+	struct Dereference_functor {
+		template<class> struct result{};
+		template<class It> struct result<Dereference_functor(It)> {
+			typedef typename std::iterator_traits<It>::reference type;
+		};
+		template<class It> typename result<Dereference_functor(It)>::type
+			operator()(It const&i)const{
+				return *i;
+			}
+	};
+
+#ifdef CGAL_CXX11
+	template<int...> struct Indices{};
+	template<class> struct Next_increasing_indices;
+	template<int...I> struct Next_increasing_indices<Indices<I...> > {
+		typedef Indices<I...,sizeof...(I)> type;
+	};
+	template<int N> struct N_increasing_indices {
+		typedef typename Next_increasing_indices<typename N_increasing_indices<N-1>::type>::type type;
+	};
+	template<> struct N_increasing_indices<0> { typedef Indices<> type; };
+	namespace internal {
+	template<class F,class...U,int...I> inline typename std::result_of<F&&(U...)>::type
+	do_call_on_tuple_elements(F&&f, std::tuple<U...>&&t, Indices<I...>&&) {
+		return f(std::get<I>(std::move(t))...);
+	}
+	} // internal
+	template<class/*result type, ignored*/,class F,class...U>
+	inline typename std::result_of<F&&(U...)>::type
+	call_on_tuple_elements(F&&f, std::tuple<U...>&&t) {
+		return internal::do_call_on_tuple_elements(std::forward<F>(f),std::move(t),
+				typename N_increasing_indices<sizeof...(U)>::type());
+	}
+#else
+#define CGAL_VAR(Z,N,_) cpp0x::get<N>(t)
+#define CGAL_CODE(Z,N,_) template<class Res, class F BOOST_PP_COMMA_IF(N) BOOST_PP_ENUM_PARAMS(N,class U)> \
+	inline Res call_on_tuple_elements(F const&f, \
+			cpp0x::tuple<BOOST_PP_ENUM_PARAMS(N,U)> const&t) { \
+		return f(BOOST_PP_ENUM(N,CGAL_VAR,)); \
+	}
+	template<class Res, class F>
+	inline Res call_on_tuple_elements(F const&f, cpp0x::tuple<>) {
+		return f();
+	}
+BOOST_PP_REPEAT_FROM_TO(1, 8, CGAL_CODE, _ )
+#undef CGAL_CODE
+#undef CGAL_VAR
+#endif
+
+	template<class A> struct Factory {
+	  typedef A result_type;
+#ifdef CGAL_CXX11
+	  template<class...U> result_type operator()(U&&...u)const{
+	    return A(std::forward<U>(u)...);
+	  }
+#else
+	  result_type operator()()const{
+	    return A();
+	  }
+#define CGAL_CODE(Z,N,_) template<BOOST_PP_ENUM_PARAMS(N,class U)> \
+	  result_type operator()(BOOST_PP_ENUM_BINARY_PARAMS(N,U,const&u))const{ \
+	    return A(BOOST_PP_ENUM_PARAMS(N,u)); \
+	  }
+BOOST_PP_REPEAT_FROM_TO(1, 8, CGAL_CODE, _ )
+#undef CGAL_CODE
+#endif
+	};
+}
+
+// TODO: make a Cartesian-only variant
+// WARNING: do not use the Req* parameters too much, they can cause circular instanciations and are only useful for dispatching.
+#define CGAL_STRIP_PAREN_(...) __VA_ARGS__
+#define CGAL_STRIP_PAREN(...) CGAL_STRIP_PAREN_ __VA_ARGS__
+// What to do with O? pass it down to other functors or drop it?
+#define CGAL_KD_DEFAULT_FUNCTOR(Tg,Name,ReqTyp,ReqFun) \
+    template <class K, class O> \
+    struct Get_functor<K, Tg, O, \
+      typename boost::mpl::if_c< \
+        Provides_functor_i<K, Tg, O>::value \
+        || !Provides_types<K, boost::mpl::vector<CGAL_STRIP_PAREN_ ReqTyp> >::value \
+        || !Provides_functors<K, boost::mpl::vector<CGAL_STRIP_PAREN_ ReqFun> >::value \
+      , int, void>::type> \
+    { \
+      typedef CGAL_STRIP_PAREN_ Name type; \
+      typedef K Bound_kernel; \
+    }
+
+// Not used yet, may need some changes.
+#define CGAL_KD_DEFAULT_TYPE(Tg,Name,ReqTyp,ReqFun) \
+    template <class K> \
+    struct Get_type<K, Tg, \
+      typename boost::mpl::if_c< \
+        Provides_type_i<K, Tg>::value \
+        || !Provides_types<K, boost::mpl::vector<CGAL_STRIP_PAREN_ ReqTyp> >::value \
+        || !Provides_functors<K, boost::mpl::vector<CGAL_STRIP_PAREN_ ReqFun> >::value \
+      , int, void>::type> \
+    { \
+      typedef CGAL_STRIP_PAREN_ Name type; \
+      typedef K Bound_kernel; \
+    }
+
+#if defined(BOOST_MSVC)
+#  pragma warning(pop)
+#endif
+
+#endif
-- 
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