This function converts an ordinary
list into a control list (if
needed) and checks that the control list passed is appropriate for
the function to be controlled.
check.control.class( OKnames = as.character(ult(sys.calls(), 2)[[1L]]), myname = as.character(ult(sys.calls(), 2)[[1L]]), control = get("control", pos = parent.frame()) )
List of control function names which are acceptable.
Name of the calling function (used in the error message).
The control list or a list to be converted to a
control list using
check.control.class() performs the check by looking up
the class of the
control argument (defaulting to the
variable in the calling function) and checking if it matches a
list of acceptable given by
Before performing any checks, the
control argument (including
the default) will be converted to a control list by calling
as.control.list() on it with the first element of
construct the control function.
control is missing, it will be assumed that the user wants
to modify it in place, and a variable with that name in the
parent environment will be overwritten.
A valid control list for the function in which it is to be
control argument is missing, it will also overwrite
control in the calling environment with it.
In earlier versions,
autodetected. This capability has been deprecated and results in
a warning issued once per session. They now need to be set
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