rand_node
static struct rand_node *rand_root;
static struct rand_node *rand_tail;
static struct rand_node *
struct rand_node *n;
n = (struct rand_node *)malloc(sizeof(struct rand_node));
rand_node_free(struct rand_node *n)
rand_node_free_rec(struct rand_node *n)
rand_node_append(struct rand_node *n)
struct rand_node *n, *prev;
struct rand_node *next;