\HeaderA{survreg.control}{Package options for survreg and coxph}{survreg.control}
\aliasA{coxph.control}{survreg.control}{coxph.control}
\keyword{survival}{survreg.control}
\begin{Description}\relax
These functions check and package the fitting options for \code{\LinkA{survreg}{survreg}} and \code{\LinkA{coxph}{coxph}}
\end{Description}
\begin{Usage}
\begin{verbatim}
survreg.control(maxiter=30, rel.tolerance=1e-09, failure=1,
toler.chol=1e-10, iter.max, debug=0, outer.max=10)
coxph.control (eps = 1e-09, toler.chol = .Machine$double.eps^0.75, 
    iter.max = 20, toler.inf = sqrt(eps), outer.max = 10) 

\end{verbatim}
\end{Usage}
\begin{Arguments}
\begin{ldescription}
\item[\code{maxiter}] maximum number of iterations 
\item[\code{rel.tolerance}] relative tolerance to declare convergence 
\item[\code{failure}] value of status variable indicating failure
\item[\code{toler.chol}] Tolerance to declare Cholesky decomposition singular
\item[\code{iter.max}] same as \code{maxiter}
\item[\code{debug}] print debugging information
\item[\code{outer.max}] maximum number of outer iterations for choosing
penalty parameters
\item[\code{eps}] Tolerance to declare convergence for Cox model
\item[\code{toler.inf}] An undocumented parameter
\end{ldescription}
\end{Arguments}
\begin{Value}
A list with the same elements as the input
\end{Value}
\begin{SeeAlso}\relax
\code{\LinkA{survreg}{survreg}}, \code{\LinkA{coxph}{coxph}}
\end{SeeAlso}
\begin{Examples}
\begin{ExampleCode}

\end{ExampleCode}
\end{Examples}