Function splinter_set_named_type 

pub unsafe extern "C" fn splinter_set_named_type(
    key: *const c_char,
    mask: u16,
) -> c_int

@brief Name (declare intent to) a type fo a slot @param key Name of the key to change @param mask Splinter type bitmask to apply (e.g SPL_SLOT_TYPE_BIGUINT) @return -1 or on error (sets errno), 0 on success