pub unsafe extern "C" fn atg_elu_backward_grad_input( out__: *mut *mut C_tensor, grad_input_: *mut C_tensor, grad_output_: *mut C_tensor, alpha_: *mut C_scalar, scale_: *mut C_scalar, input_scale_: *mut C_scalar, is_result_: c_int, self_or_result_: *mut C_tensor)