pub unsafe extern "C" fn atg_fractional_max_pool2d_backward( out__: *mut *mut C_tensor, grad_output_: *mut C_tensor, self_: *mut C_tensor, kernel_size_data: *const i64, kernel_size_len: c_int, output_size_data: *const i64, output_size_len: c_int, indices_: *mut C_tensor)