Maximum gradient after NLP scaling.
This is the gradient scaling cut-off. If the
maximum gradient is above this value, then
gradient based scaling will be performed. Scaling
parameters are calculated to scale the maximum
gradient back to this value. (This is g_max in
Section 3.8 of the implementation paper.) Note:
This option is only used if
"nlp_scaling_method" is chosen as
"gradient-based". The valid range for this real option is
and its default value is .