\begin{ccRefFunction}{sign}

\ccDefinition

The template function \ccRefName\ returns the sign 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 <class NT> result_type sign(const NT& x);}{
        returns the sign of the argument. 
        The \ccc{result_type} is convertible to \ccc{CGAL::Sign}. 
        }

\ccSeeAlso

\ccRefConceptPage{RealEmbeddable}\\
\ccRefConceptPage{RealEmbeddableTraits::Sign}\\

\end{ccRefFunction}
