Function rcl_sys::rcl::wait::rcl_wait_set_add_timer

pub unsafe extern "C" fn rcl_wait_set_add_timer(
    wait_set: *mut rcl_wait_set_t, 
    timer: *const rcl_timer_t, 
    index: *mut usize
) -> rcl_ret_t

Store a pointer to the timer in the next empty spot in the set.