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[kyewong <>]

Hi,
When I'm using the linear_least_squares_fitting_3 and
CGAL::Exact_predicates_exact_constructions_kernel as kernel, there will be a
compile error as follows.
Could anyone tell me how to modify it if I want to use both of them at the
same time please? Thanks very much!


1>F:\Program Files\CGAL-3.8\include\CGAL/PCA_util.h(132) : error C2665:
'sqrt' : none of the 3 overloads could convert all the argument types
1>        F:\Program Files\Microsoft Visual Studio
9.0\VC\include\math.h(581): could be 'long double sqrt(long double)'
1>        F:\Program Files\Microsoft Visual Studio
9.0\VC\include\math.h(533): or       'float sqrt(float)'
1>        F:\Program Files\Microsoft Visual Studio
9.0\VC\include\math.h(128): or       'double sqrt(double)'
1>        while trying to match the argument list
'(CGAL::Lazy_exact_nt<ET_>)'
1>        with
1>        [
1>            ET_=CGAL::Gmpq
1>        ]
1>        F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_triangles_3.h(57) :
see reference to function template instantiation 'void
CGAL::internal::assemble_covariance_matrix_3&lt;InputIterator,K&gt;(InputIterator,InputIterator,CGAL::Lazy_exact_nt<ET_>
[],const CGAL::Point_3<R_> &,const K &,const CGAL::Triangle_3<R_> *,const
CGAL::Dimension_tag<dim> &)' being compiled
1>        with
1>        [
1>            InputIterator=std::list<Triangle>::_Iterator<true>,
1>            K=CGAL::Epeck,
1>            ET_=CGAL::Gmpq,
1>            R_=CGAL::Epeck,
1>            dim=2
1>        ]
1>        F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_3.h(58) : see
reference to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::internal::linear_least_squares_fitting_3&lt;InputIterator,Kernel&gt;(InputIterator,InputIterator,CGAL::Plane_3<R_>
&,CGAL::Point_3<R_> &,const CGAL::Triangle_3<R_> *,const K &,const
CGAL::Dimension_tag<dim> &)' being compiled
1>        with
1>        [
1>            ET_=CGAL::Gmpq,
1>            InputIterator=std::list<Triangle>::_Iterator<true>,
1>            Kernel=CGAL::Epeck,
1>            R_=CGAL::Epeck,
1>            K=CGAL::Epeck,
1>            dim=2
1>        ]
1>        F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_3.h(76) : see
reference to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::linear_least_squares_fitting_3&lt;InputIterator,Object,CGAL::Epeck,Tag&gt;(InputIterator,InputIterator,Object
&,CGAL::Point_3<R_> &,const Tag &,const Kernel &)' being compiled
1>        with
1>        [
1>            ET_=CGAL::Gmpq,
1>            InputIterator=std::list<Triangle>::_Iterator<true>,
1>            Object=Plane,
1>            Tag=CGAL::Dimension_tag<2>,
1>            R_=CGAL::Epeck,
1>            Kernel=CGAL::Epeck
1>        ]
1>        F:\Program
Files\CGAL-3.8\include\CGAL/linear_least_squares_fitting_3.h(93) : see
reference to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::linear_least_squares_fitting_3&lt;InputIterator,Object,CGAL::Point_3&lt;R_&gt;,Tag>(InputIterator,InputIterator,Object
&,Point &,const Tag &)' being compiled
1>        with
1>        [
1>            ET_=CGAL::Gmpq,
1>            InputIterator=std::list<Triangle>::_Iterator<true>,
1>            Object=Plane,
1>            R_=CGAL::Epeck,
1>            Tag=CGAL::Dimension_tag<2>,
1>            Point=CGAL::Point_3<CGAL::Epeck>
1>        ]
1>        .\linear_least_squares_fitting_triangles_3.cpp(33) : see reference
to function template instantiation 'CGAL::Lazy_exact_nt<ET_>
CGAL::linear_least_squares_fitting_3&lt;std::list&lt;_Ty&gt;::_Iterator<_Secure_validation>,Plane,CGAL::Dimension_tag<dim>>(InputIterator,InputIterator,Object
&,const Tag &)' being compiled
1>        with
1>        [
1>            ET_=CGAL::Gmpq,
1>            _Ty=Triangle,
1>            _Secure_validation=true,
1>            dim=2,
1>            InputIterator=std::list<Triangle>::_Iterator<true>,
1>            Object=Plane,
1>            Tag=CGAL::Dimension_tag<2>
1>        ]

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