diff --git a/NewKernel_d/include/CGAL/NewKernel_d/Cartesian_LA_base.h b/NewKernel_d/include/CGAL/NewKernel_d/Cartesian_LA_base.h
index 28893d64830..80ee4b33580 100644
--- a/NewKernel_d/include/CGAL/NewKernel_d/Cartesian_LA_base.h
+++ b/NewKernel_d/include/CGAL/NewKernel_d/Cartesian_LA_base.h
@@ -87,6 +87,7 @@ struct Cartesian_LA_base_d : public Dimension_base<Dim_>
       ::add<Segment_tag>::type
       ::add<Hyperplane_tag>::type
       ::add<Sphere_tag>::type
+      ::add<Weighted_point_tag>::type
       Object_list;
 
     typedef typeset< Point_cartesian_const_iterator_tag>::type
diff --git a/NewKernel_d/include/CGAL/NewKernel_d/Kernel_object_converter.h b/NewKernel_d/include/CGAL/NewKernel_d/Kernel_object_converter.h
index b13303fa24c..36f0c687da4 100644
--- a/NewKernel_d/include/CGAL/NewKernel_d/Kernel_object_converter.h
+++ b/NewKernel_d/include/CGAL/NewKernel_d/Kernel_object_converter.h
@@ -117,5 +117,17 @@ template <class K1, class K2> struct KO_converter<Sphere_tag,K1,K2>{
     }
 };
 
+template <class K1, class K2> struct KO_converter<Weighted_point_tag,K1,K2>{
+  typedef typename Get_type<K1, Weighted_point_tag>::type	argument_type;
+  typedef typename Get_type<K2, Weighted_point_tag>::type	result_type;
+  template <class C>
+    result_type operator()(K1 const& k1, K2 const& k2, C const& conv, argument_type const& s) const {
+      typename Get_functor<K1, Point_drop_weight_tag>::type pdw(k1);
+      typename Get_functor<K1, Point_weight_tag>::type pw(k1);
+      typename Get_functor<K2, Construct_ttag<Weighted_point_tag> >::type cwp(k2);
+      return cwp(conv(pdw(s)),conv(pw(s)));
+    }
+};
+
 }
 #endif
diff --git a/NewKernel_d/include/CGAL/NewKernel_d/Types/Weighted_point.h b/NewKernel_d/include/CGAL/NewKernel_d/Types/Weighted_point.h
index 020ee430a78..553f2df6efe 100644
--- a/NewKernel_d/include/CGAL/NewKernel_d/Types/Weighted_point.h
+++ b/NewKernel_d/include/CGAL/NewKernel_d/Types/Weighted_point.h
@@ -50,7 +50,8 @@ template <class R_> struct Construct_weighted_point : Store_kernel<R_> {
 template <class R_> struct Point_drop_weight {
   CGAL_FUNCTOR_INIT_IGNORE(Point_drop_weight)
   typedef typename Get_type<R_, Weighted_point_tag>::type	argument_type;
-  typedef typename Get_type<R_, Point_tag>::type const&		result_type;
+  typedef typename Get_type<R_, Point_tag>::type		result_type;
+  // Returning a reference would be too fragile
 
   result_type operator()(argument_type const&s)const{
     return s.point();
@@ -60,17 +61,37 @@ template <class R_> struct Point_drop_weight {
 template <class R_> struct Point_weight {
   CGAL_FUNCTOR_INIT_IGNORE(Point_weight)
   typedef typename Get_type<R_, Weighted_point_tag>::type	argument_type;
-  typedef typename Get_type<R_, FT_tag>::type const&		result_type;
+  typedef typename Get_type<R_, FT_tag>::type			result_type;
 
   result_type operator()(argument_type const&s)const{
     return s.weight();
   }
 };
 
+template<class R_> struct Power_test : private Store_kernel<R_> {
+  CGAL_FUNCTOR_INIT_STORE(Power_test)
+  typedef R_ R;
+  typedef typename Get_type<R, Oriented_side_tag>::type result_type;
+
+  template<class Iter, class Pt>
+    result_type operator()(Iter const& f, Iter const& e, Pt const& p0) const {
+      typename Get_functor<R, Power_test_raw_tag>::type ptr(this->kernel());
+      typename Get_functor<R, Point_drop_weight_tag>::type pdw(this->kernel());
+      typename Get_functor<R, Point_weight_tag>::type pw(this->kernel());
+      return ptr (
+	  make_transforming_iterator (f, pdw),
+	  make_transforming_iterator (e, pdw),
+	  make_transforming_iterator (f, pw),
+	  pdw (p0),
+	  pw (p0));
+    }
+};
+
 }
 CGAL_KD_DEFAULT_TYPE(Weighted_point_tag,(CGAL::Weighted_point<K>),(Point_tag),());
 CGAL_KD_DEFAULT_FUNCTOR(Construct_ttag<Weighted_point_tag>,(CartesianDKernelFunctors::Construct_weighted_point<K>),(Weighted_point_tag,Point_tag),());
 CGAL_KD_DEFAULT_FUNCTOR(Point_drop_weight_tag,(CartesianDKernelFunctors::Point_drop_weight<K>),(Weighted_point_tag,Point_tag),());
 CGAL_KD_DEFAULT_FUNCTOR(Point_weight_tag,(CartesianDKernelFunctors::Point_weight<K>),(Weighted_point_tag,Point_tag),());
+CGAL_KD_DEFAULT_FUNCTOR(Power_test_tag,(CartesianDKernelFunctors::Power_test<K>),(Weighted_point_tag),(Power_test_raw_tag,Point_drop_weight_tag,Point_weight_tag));
 } // namespace CGAL
 #endif
diff --git a/NewKernel_d/include/CGAL/NewKernel_d/Wrapper/Cartesian_wrap.h b/NewKernel_d/include/CGAL/NewKernel_d/Wrapper/Cartesian_wrap.h
index a0c6d8f650c..520a96c8e9e 100644
--- a/NewKernel_d/include/CGAL/NewKernel_d/Wrapper/Cartesian_wrap.h
+++ b/NewKernel_d/include/CGAL/NewKernel_d/Wrapper/Cartesian_wrap.h
@@ -28,6 +28,7 @@
 #include <CGAL/NewKernel_d/Wrapper/Segment_d.h>
 #include <CGAL/NewKernel_d/Wrapper/Sphere_d.h>
 #include <CGAL/NewKernel_d/Wrapper/Hyperplane_d.h>
+#include <CGAL/NewKernel_d/Wrapper/Weighted_point_d.h>
 
 #include <CGAL/NewKernel_d/Wrapper/Ref_count_obj.h>
 
@@ -106,6 +107,7 @@ CGAL_REGISTER_OBJECT_WRAPPER(Vector);
 CGAL_REGISTER_OBJECT_WRAPPER(Segment);
 CGAL_REGISTER_OBJECT_WRAPPER(Sphere);
 CGAL_REGISTER_OBJECT_WRAPPER(Hyperplane);
+CGAL_REGISTER_OBJECT_WRAPPER(Weighted_point);
 #undef CGAL_REGISTER_OBJECT_WRAPPER
 
 // Note: this tends to be an all or nothing thing currently, wrapping
diff --git a/NewKernel_d/include/CGAL/NewKernel_d/Wrapper/Weighted_point_d.h b/NewKernel_d/include/CGAL/NewKernel_d/Wrapper/Weighted_point_d.h
new file mode 100644
index 00000000000..877eea21b0f
--- /dev/null
+++ b/NewKernel_d/include/CGAL/NewKernel_d/Wrapper/Weighted_point_d.h
@@ -0,0 +1,129 @@
+// 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_WRAPPER_WEIGHTED_POINT_D_H
+#define CGAL_WRAPPER_WEIGHTED_POINT_D_H
+
+#include <CGAL/representation_tags.h>
+#include <boost/static_assert.hpp>
+#include <boost/type_traits.hpp>
+#include <CGAL/Kernel/Return_base_tag.h>
+#include <CGAL/Dimension.h>
+#ifndef CGAL_CXX11
+#include <boost/preprocessor/repetition.hpp>
+#endif
+#include <boost/utility/result_of.hpp>
+
+namespace CGAL {
+namespace Wrap {
+
+template <class R_>
+class Weighted_point_d : public Get_type<typename R_::Kernel_base, Weighted_point_tag>::type
+{
+  typedef typename Get_type<R_, FT_tag>::type		FT_;
+  typedef typename R_::Kernel_base		Kbase;
+  typedef typename Get_type<R_, Point_tag>::type	Point_;
+  typedef typename Get_functor<Kbase, Construct_ttag<Weighted_point_tag> >::type	CWPBase;
+  typedef typename Get_functor<Kbase, Point_drop_weight_tag>::type		PDWBase;
+  typedef typename Get_functor<Kbase, Point_weight_tag>::type			PWBase;
+
+  typedef Weighted_point_d                            Self;
+  BOOST_STATIC_ASSERT((boost::is_same<Self, typename Get_type<R_, Weighted_point_tag>::type>::value));
+
+public:
+
+  typedef Tag_true Is_wrapper;
+  typedef typename R_::Default_ambient_dimension Ambient_dimension;
+  typedef Dimension_tag<0> Feature_dimension;
+
+  typedef typename Get_type<Kbase, Weighted_point_tag>::type	Rep;
+
+  const Rep& rep() const
+  {
+    return *this;
+  }
+
+  Rep& rep()
+  {
+    return *this;
+  }
+
+  typedef          R_                       R;
+
+#ifdef CGAL_CXX11
+  template<class...U,class=typename std::enable_if<!std::is_same<std::tuple<typename std::decay<U>::type...>,std::tuple<Weighted_point_d> >::value>::type> explicit Weighted_point_d(U&&...u)
+	  : Rep(CWPBase()(std::forward<U>(u)...)){}
+
+//  // called from Construct_point_d
+//  template<class...U> explicit Point_d(Eval_functor&&,U&&...u)
+//	  : Rep(Eval_functor(), std::forward<U>(u)...){}
+  template<class F,class...U> explicit Weighted_point_d(Eval_functor&&,F&&f,U&&...u)
+	  : Rep(std::forward<F>(f)(std::forward<U>(u)...)){}
+
+#if 0
+  // the new standard may make this necessary
+  Point_d(Point_d const&)=default;
+  Point_d(Point_d &);//=default;
+  Point_d(Point_d &&)=default;
+#endif
+
+  // try not to use these
+  Weighted_point_d(Rep const& v) : Rep(v) {}
+  Weighted_point_d(Rep& v) : Rep(static_cast<Rep const&>(v)) {}
+  Weighted_point_d(Rep&& v) : Rep(std::move(v)) {}
+
+#else
+
+  Weighted_point_d() : Rep(CWPBase()()) {}
+
+  Weighted_point_d(Rep const& v) : Rep(v) {} // try not to use it
+
+#define CGAL_CODE(Z,N,_) template<BOOST_PP_ENUM_PARAMS(N,class T)> \
+  explicit Weighted_point_d(BOOST_PP_ENUM_BINARY_PARAMS(N,T,const&t)) \
+  : Rep(CWPBase()( \
+	BOOST_PP_ENUM_PARAMS(N,t))) {} \
+  \
+  template<class F,BOOST_PP_ENUM_PARAMS(N,class T)> \
+  Weighted_point_d(Eval_functor,F const& f,BOOST_PP_ENUM_BINARY_PARAMS(N,T,const&t)) \
+  : Rep(f(BOOST_PP_ENUM_PARAMS(N,t))) {}
+  /*
+  template<BOOST_PP_ENUM_PARAMS(N,class T)> \
+  Point_d(Eval_functor,BOOST_PP_ENUM_BINARY_PARAMS(N,T,const&t)) \
+  : Rep(Eval_functor(), BOOST_PP_ENUM_PARAMS(N,t)) {}
+  */
+
+  BOOST_PP_REPEAT_FROM_TO(1,11,CGAL_CODE,_)
+#undef CGAL_CODE
+
+#endif
+
+  //TODO: use references?
+  Point_ point()const{
+    return Point_(Eval_functor(),PDWBase(),rep());
+  }
+  FT_ weight()const{
+    return PWBase()(rep());
+  }
+
+};
+
+} //namespace Wrap
+} //namespace CGAL
+
+#endif // CGAL_WRAPPER_SPHERE_D_H
diff --git a/NewKernel_d/include/CGAL/NewKernel_d/function_objects_cartesian.h b/NewKernel_d/include/CGAL/NewKernel_d/function_objects_cartesian.h
index e7e6be1bf1e..cb34a9fa377 100644
--- a/NewKernel_d/include/CGAL/NewKernel_d/function_objects_cartesian.h
+++ b/NewKernel_d/include/CGAL/NewKernel_d/function_objects_cartesian.h
@@ -529,6 +529,60 @@ template<class R_> struct Orientation<R_,false> : private Store_kernel<R_> {
 }
 #endif
 
+namespace CartesianDKernelFunctors {
+template<class R_> struct Power_test_raw : private Store_kernel<R_> {
+	CGAL_FUNCTOR_INIT_STORE(Power_test_raw)
+	typedef R_ R;
+	typedef typename Get_type<R, RT_tag>::type RT;
+	typedef typename Get_type<R, FT_tag>::type FT;
+	typedef typename Get_type<R, Point_tag>::type Point;
+	typedef typename Get_type<R, Oriented_side_tag>::type result_type;
+	typedef typename Increment_dimension<typename R::Default_ambient_dimension>::type D1;
+	typedef typename Increment_dimension<typename R::Max_ambient_dimension>::type D2;
+	typedef typename R::LA::template Rebind_dimension<D1,D2>::Other LA;
+	typedef typename LA::Square_matrix Matrix;
+
+	template<class IterP, class IterW, class Pt, class Wt>
+	result_type operator()(IterP f, IterP const& e, IterW fw, Pt const& p0, Wt const& w0) const {
+	  typedef typename Get_functor<R, Squared_distance_to_origin_tag>::type Sqdo;
+	  typename Get_functor<R, Compute_point_cartesian_coordinate_tag>::type c(this->kernel());
+	  typename Get_functor<R, Point_dimension_tag>::type pd(this->kernel());
+
+	  int d=pd(p0);
+	  Matrix m(d+1,d+1);
+	  if(CGAL::Is_stored<Sqdo>::value) {
+	    Sqdo sqdo(this->kernel());
+	    FT const& h0 = sqdo(p0) - w0;
+	    for(int i=0;f!=e;++f,++fw,++i) {
+	      Point const& p=*f;
+	      for(int j=0;j<d;++j){
+		RT const& x=c(p,j);
+		m(i,j)=x-c(p0,j);
+	      }
+	      m(i,d) = sqdo(p) - *fw - h0;
+	    }
+	  } else {
+	    for(int i=0;f!=e;++f,++fw,++i) {
+	      Point const& p=*f;
+	      m(i,d) = w0 - *fw;
+	      for(int j=0;j<d;++j){
+		RT const& x=c(p,j);
+		m(i,j)=x-c(p0,j);
+		m(i,d)+=CGAL::square(m(i,j));
+	      }
+	    }
+	  }
+	  if(d%2)
+	    return -LA::sign_of_determinant(CGAL_MOVE(m));
+	  else
+	    return LA::sign_of_determinant(CGAL_MOVE(m));
+	}
+};
+}
+
+CGAL_KD_DEFAULT_FUNCTOR(Power_test_raw_tag,(CartesianDKernelFunctors::Power_test_raw<K>),(Point_tag),(Point_dimension_tag,Squared_distance_to_origin_tag,Compute_point_cartesian_coordinate_tag));
+
+// TODO: make Side_of_oriented_sphere call Power_test_raw
 namespace CartesianDKernelFunctors {
 template<class R_> struct Side_of_oriented_sphere : private Store_kernel<R_> {
 	CGAL_FUNCTOR_INIT_STORE(Side_of_oriented_sphere)
diff --git a/NewKernel_d/include/CGAL/NewKernel_d/functor_tags.h b/NewKernel_d/include/CGAL/NewKernel_d/functor_tags.h
index 40b73040213..53a17530728 100644
--- a/NewKernel_d/include/CGAL/NewKernel_d/functor_tags.h
+++ b/NewKernel_d/include/CGAL/NewKernel_d/functor_tags.h
@@ -307,6 +307,8 @@ namespace CGAL {
 	CGAL_DECL_PREDICATE(Affinely_independent);
 	CGAL_DECL_PREDICATE(Contained_in_linear_hull);
 	CGAL_DECL_PREDICATE(Contained_in_simplex);
+	CGAL_DECL_PREDICATE(Power_test_raw);
+	CGAL_DECL_PREDICATE(Power_test);
 #undef CGAL_DECL_PREDICATE
 
 #define CGAL_DECL_MISC(X) struct X##_tag {}; \
diff --git a/NewKernel_d/test/NewKernel_d/Epick_d.cpp b/NewKernel_d/test/NewKernel_d/Epick_d.cpp
index fe36b903d11..1aae2c91ba7 100644
--- a/NewKernel_d/test/NewKernel_d/Epick_d.cpp
+++ b/NewKernel_d/test/NewKernel_d/Epick_d.cpp
@@ -520,12 +520,16 @@ void test3(){
   typedef typename CGAL::Get_functor<K1, CGAL::Construct_ttag<CGAL::Weighted_point_tag> >::type CWP;
   typedef typename CGAL::Get_functor<K1, CGAL::Point_drop_weight_tag>::type PDW;
   typedef typename CGAL::Get_functor<K1, CGAL::Point_weight_tag>::type PW;
+  typedef typename CGAL::Get_functor<K1, CGAL::Power_test_tag>::type PT;
   CWP cwp (k);
   PDW pdw (k);
   PW pw (k);
+  PT pt (k);
   WP wp = cwp (x1, 2);
   assert (pw(wp) == 2);
   assert (ed(pdw(wp), x1));
+  WP tabw[]={cwp(x1,0),cwp(x2,0),cwp(x3,0),cwp(x4,0),cwp(x5,0)};
+  assert(pt(tabw+0,tabw+4,tabw[4])==CGAL::ON_POSITIVE_SIDE);
 }
 template struct CGAL::Epick_d<CGAL::Dimension_tag<2> >;
 template struct CGAL::Epick_d<CGAL::Dimension_tag<3> >;
diff --git a/Number_types/include/CGAL/Gmpq.h b/Number_types/include/CGAL/Gmpq.h
index 38fd09242c4..b17fbe2b546 100644
--- a/Number_types/include/CGAL/Gmpq.h
+++ b/Number_types/include/CGAL/Gmpq.h
@@ -155,6 +155,17 @@ namespace Eigen {
       MulCost = 100
     };
   };
+
+  namespace internal {
+    template<>
+      struct significant_decimals_impl<CGAL::Gmpq>
+      {
+	static inline int run()
+	{
+	  return 0;
+	}
+      };
+  }
 }
 
 //since types are included by Gmp_coercion_traits.h:
diff --git a/Number_types/include/CGAL/Interval_nt.h b/Number_types/include/CGAL/Interval_nt.h
index e725e74621e..7b84e600781 100644
--- a/Number_types/include/CGAL/Interval_nt.h
+++ b/Number_types/include/CGAL/Interval_nt.h
@@ -1283,6 +1283,13 @@ namespace Eigen {
       MulCost = 10
     };
   };
+
+  namespace internal {
+    template<class> struct significant_decimals_impl;
+    template<bool b>
+      struct significant_decimals_impl<CGAL::Interval_nt<b> >
+      : significant_decimals_impl<typename CGAL::Interval_nt<b>::value_type> { };
+  }
 }
 
 #endif // CGAL_INTERVAL_NT_H