(PECL fann >= 1.0.0)
fann_set_activation_steepness_hidden — Ϊ�������ز������е���Ԫ���ü��������
$ann
, float $activation_steepness
) : boolΪ�������ز������е���Ԫ���ü���ȡ�
annNeural network resource.
activation_steepness����ȡ�
Returns TRUE on success, or FALSE otherwise.