(PECL fann >= 1.0.0)
fann_get_cascade_activation_steepnesses_count — The number of activation steepnesses
$ann
   )The number of activation steepnesses in the fann_get_cascade_activation_functions() array.
The default number of activation steepnesses is 4.
ann
    Neural network resource.
   The number of activation steepnesses, or FALSE on error.