insque(3C)							    insque(3C)

NAME    [Toc]    [Back]

     insque, remque - insert/remove element from a queue

SYNOPSIS    [Toc]    [Back]

     #include <search.h>

     void insque(struct	qelem *elem, struct qelem *pred);

     void remque(struct	qelem *elem);

     #if _XOPEN_SOURCE
       void insque(void	*, void	*);

       void remque(void	*);
     #endif

DESCRIPTION    [Toc]    [Back]

     insque and	remque manipulate queues built from doubly linked lists.  Each
     element in	the queue must be in the following form:

	  struct qelem {
	       struct	 qelem *q_forw;
	       struct	 qelem *q_back;
	       char q_data[];
	  };

     insque inserts elem in a queue immediately	after pred.  If	the argument
     pred is NULL, then	the structure q_forw and q_back	entries	of the passed
     structure pointed to by the struct	pointer	elem will be set to zeroes.
     remque removes an entry elem from a queue.


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