CGAL users discussion list

["Thomas Zangl - Home" <>]

Hi!

I tried to remove the dependency on math.h's sqrt function (and the
need to convert the variable to_double). So I tried this: 

typedef CGAL::Exact_predicates_exact_constructions_kernel K;
typedef K::FT dbl;
..

dbl dNormal = CGAL::sqrt(dSquared);

This gives me the following compile error:
src/IntersectionTools_3.cpp:422: error: conversion from `CGAL::Null_tag' to 
non-scalar type `CGAL::Lazy_exact_nt<CGAL::Gmpq>' requested
/home/TZi/CGAL-3.3/include/CGAL/number_utils.h: In function `typename 
CGAL::Algebraic_structure_traits<Type_>::Sqrt::result_type CGAL::sqrt(const 
AS&) [with AS = dbl]':
src/IntersectionTools_3.cpp:422:   instantiated from here
/home/TZi/CGAL-3.3/include/CGAL/number_utils.h:90: error: no match for call 
to `(CGAL::Null_functor) (const CGAL::Lazy_exact_nt<CGAL::Gmpq>&)'
make: *** [src/IntersectionTools_3.o] Error 1

Any ideas? Thanks :-)

Best regards,
-- 
----------------------------------------------------------------
,yours Thomas Zangl, Bakk.rer.soc.oec. - 

 -
- Freelancer - IT Consulting & Software Development -
- Student of Software Development-Economy (Master) -