erns are sampled
in order.

<p><CODE>options(6)</CODE> determines if the learning rate decays.  If it is 1
then the learning rate decays at a rate of <CODE>1/t</CODE>.  If it is 0
(the default) then the learning rate is constant.

<p><CODE>options(9)</CODE> should be set to 1 to check the user defined gradient
function.

<p><CODE>options(10)</CODE> returns the total number of function evaluations (including
those in any line searches).

<p><CODE>options(11)</CODE> returns the total number of gradient evalua