\HeaderA{is.single}{Is an Object of Single Precision Type?}{is.single}
\keyword{classes}{is.single}
\begin{Description}\relax
\code{is.single} reports an error. There are no single precision
values in R.
\end{Description}
\begin{Usage}
\begin{verbatim}is.single(x)\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{x}] object to be tested.
\end{ldescription}
\end{Arguments}
\begin{Details}\relax
\code{is.single} is generic: you can write methods to handle
specific classes of objects, see \LinkA{InternalMethods}{InternalMethods}.
\end{Details}
\begin{References}\relax
Becker, R. A., Chambers, J. M. and Wilks, A. R. (1988)
\emph{The New S Language}.
Wadsworth \& Brooks/Cole.
\end{References}

