\begin{ccRefFunction}{sqrt} \ccDefinition The function \ccRefName\ returns the square root of a value. The function is defined if the argument type is a model of the \ccc{FieldWithSqrt} concept. \ccInclude{CGAL/number_utils.h} \ccFunction{template NT sqrt(const NT& x);} {} \ccSeeAlso \ccRefConceptPage{FieldWithSqrt}\\ \ccRefConceptPage{AlgebraicStructureTraits::Sqrt}\\ \end{ccRefFunction}