!ENGINE_set_init_function(e, nuron_init) ||
!ENGINE_set_finish_function(e, nuron_finish) ||
!ENGINE_set_ctrl_function(e, nuron_ctrl) ||
!ENGINE_set_init_function(e, nuron_init) ||
!ENGINE_set_finish_function(e, nuron_finish) ||
!ENGINE_set_ctrl_function(e, nuron_ctrl) ||