(PECL fann >= 1.0.0)
fann_set_rprop_delta_max — Sets the maximum step-size
$ann
   , float $rprop_delta_max
   )The maximum step-size is a positive number determining how large the maximum step-size may be.
ann
    Neural network resource.
rprop_delta_max
    The maximum step-size.
Returns TRUE on success, or FALSE otherwise.