| survreg.control {survival} | R Documentation | 
These functions check and package the fitting options for survreg and coxph
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) 
| maxiter | maximum number of iterations | 
| rel.tolerance | relative tolerance to declare convergence | 
| failure | value of status variable indicating failure | 
| toler.chol | Tolerance to declare Cholesky decomposition singular | 
| iter.max | same as maxiter | 
| debug | print debugging information | 
| outer.max | maximum number of outer iterations for choosing penalty parameters | 
| eps | Tolerance to declare convergence for Cox model | 
| toler.inf | An undocumented parameter | 
A list with the same elements as the input