licative scale factors for the variables.
<P>
<I>mode</I> is an integer input variable. If <I>mode</I> = 1, the
variables will be scaled internally. If <I>mode</I> = 2,
the scaling is specified by the input <I>diag</I>. Other
values of mode are equivalent to <I>mode</I> = 1.
<P>
<I>factor</I> is a positive input variable used in determining the
initial step bound. This bound is set to the product of <I>factor</I>
and the euclidean norm of <I>diag</I>*<I>x</I> if the latter is
nonzero, or else to <I>factor</