Function hurray_item_kind 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn hurray_item_kind(
    handle: *const HurrayItem,
    out_kind: *mut u8,
) -> HurrayStatus

The item’s own kind: HURRAY_ITEM_TENSOR or HURRAY_ITEM_COMPOSITE.

The kind of node 0, which a caller that only wants to know whether a composite arrived can ask for without walking.

Safety

handle and out_kind MUST be valid, non-null pointers.