\begin{ccRefFunction}{to_double} \ccDefinition The template function \ccRefName\ returns an double approximation of a number. The function is guaranteed to be well defined in case the argument type is a model of the \ccc{RealEmbeddable} concept. \ccInclude{CGAL/number_utils.h} \ccFunction{template double to_double(const NT& x);} {} \ccSeeAlso \ccRefConceptPage{RealEmbeddable}\\ \ccRefConceptPage{RealEmbeddableTraits::ToDouble}\\ \end{ccRefFunction}