CGAL users discussion list

[Andrew Cunningham <>]

The error from the Visual C++ compiler ( 2019) is similar ( this is
not a Intel Compiler issue)

1>D:\CGAL-5.1\include\CGAL/NT_converter.h(33,1): error C2440:
'<function-style-cast>': cannot convert from 'const NT1' to 'NT2'
1>        with
1>        [
1>            NT1=CGAL::Lazy_exact_nt<CGAL::Gmpq>
1>        ]
1>        and
1>        [
1>            NT2=float
1>        ]
1>D:\CGAL-5.1\include\CGAL/NT_converter.h(33,19): message : No
user-defined-conversion operator available that can perform this
conversion, or the operator cannot be called
1>D:\CGAL-5.1\include\CGAL/NT_converter.h(32): message : while
compiling class template member function 'NT2
CGAL::NT_converter<CGAL::Lazy_exact_nt<CGAL::Gmpq>,NT2>::operator
()(const NT1 &) const'

On Wed, Dec 2, 2020 at 10:06 AM Andrew Cunningham <> 
wrote:
>
> Hi,
> I am trying to use
>
> void CGAL::Polygon_mesh_processing::split ( TriangleMesh &  tm,
> const Plane_3 &  plane,
> const NamedParameters &  np )
>
> There are no examples in 5.1 for this API.
>
>
> When I do try and compile my code using this API and a <float> kernel
> I am getting an error message
>
> using K = CGAL::Simple_cartesian< float >;
> using Point_3                  = K::Point_3;
> using Mesh                     = CGAL::Surface_mesh< Point_3 >;
> using Plane                     = K::Plane_3;
>
>
> CGAL/NT_converter.h(33): error : no suitable conversion function from
> "const CGAL::Lazy_exact_nt<CGAL::Gmpq>" to "float" exists
>
> I am using the Intel 19.1 C++ compiler.
>
> Andrew