/* Return with the pointer of the previous node after 'n_act'  */
void* lv_ll_get_prev(const lv_ll_t *ll_p, const void *n_act)
/* Return with the pointer of the previous node after 'n_act'  */
void* lv_ll_get_prev(const lv_ll_t *ll_p, const void *n_act)
{
    void * prev = NULL;
    if(ll_p != NULL) {
        const lv_ll_node_t * n_act_d = n_act;
        memcpy(&prev, n_act_d + LL_PREV_P_OFFSET(ll_p), sizeof(void *));
    }
    return prev;
}