/*
 *	Determine if the sky is blue by checking that it isn't night.
 *	CAVEAT: Only sometimes right.  May return TRUE when the answer
 *	is FALSE.  Consider clouds, eclipses, short days.
 *	NOTE: Uses `hour' from `hightime.c'.  Returns `int' for
 *	compatibility with the old version.
 */
int						/* true or false */
skyblue(void)
{
	extern int	hour;		/* current hour of the day */

	return (hour >= MORNING && hour <= EVENING);
}

/*
 *	Find the last element in the linked list
 *	pointed to by nodep and return a pointer to it.
 *	Return NULL if there is no last element.
 */
node_t *
tail(node_t *nodep)
{
	node_t	*np;		/* advances to NULL */
	node_t	*lp;		/* follows one behind np */

	if (nodep == NULL)
		return (NULL);
	for (np = lp = nodep; np != NULL; lp = np, np = np->next)
		;	/* VOID */
	return (lp);
}