PR_CLIST_IS_EMPTY=================
Checks for an empty circular list.
Syntax------..code::
#include <prclist.h>
PRIntn PR_CLIST_IS_EMPTY (PRCList *listp);
Parameter~~~~~~~~~``listp``
A pointer to the linked list.
Description-----------
PR_CLIST_IS_EMPTY returns a non-zero value if the specified list is an
empty list, otherwise returns zero.