The R Project SVN R

\name{numeric}
\title{Numeric Vectors}
\usage{
numeric(n=0)
as.numeric(x)
is.numeric(x)
}
\alias{numeric}
\alias{as.numeric}
\alias{is.numeric}
\description{
\code{numeric} creates a real vector of length \code{n}.
The vector is filled with zeros.

\code{as.numeric} attempts to coerce
its argument to numeric type (either integer or real).

\code{is.numeric} returns \code{TRUE} if its argument is of
type real or type integer and \code{FALSE} otherwise.
}
\note{
\emph{R has no single precision data type.
All real numbers are stored in double precision format}.
}