FILE
	/usr/common/sys/channeld.c

NAME
	is_subscribed - return whether a user is subscribed to a channel

PROTOTYPE
	int is_subscribed(object user, int channel)

CALLED BY
	System, Common, Game

DESCRIPTION
	Returns a number to indicate whether the given user is subscribed
	to the given channel.

RETURN VALUE
	Returns 1 if the user is subscribed, 0 if s/he isn't, and -1 if
	the request cannot be completed.

ERRORS
	Normally none.

SEE ALSO
	get_channel_by_name, string_to_channel, subscribe_user