\begin{ccRefFunction}{inverse} \ccDefinition The function \ccRefName\ returns the inverse element with respect to multiplication. The function is defined if the argument type is a model of the \ccc{Field} concept. \ccInclude{CGAL/number_utils.h} \ccFunction{template NT inverse(const NT& x);} {\ccPrecond $x \neq 0$} \ccSeeAlso \ccRefConceptPage{Field}\\ \ccRefConceptPage{AlgebraicStructureTraits::Inverse}\\ \end{ccRefFunction}