insque(3) [ultrix man page]

insque(3)						     Library Functions Manual							 insque(3)

Name
       insque, remque - insert/remove element from a queue

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

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

       void remque(elem)
       struct qelem *elem;

Description
       The and subroutines manipulate queues built from doubly linked lists.  Each element in the queue must in the form of ``struct qelem.''  The
       subroutine inserts elem in a queue immediately after pred.  The subroutine removes an entry elem from a queue.

																	 insque(3)

INSQUE(3)						     Linux Programmer's Manual							 INSQUE(3)

NAME

       insque, remque - insert/remove an item from a queue

SYNOPSIS

       #include <search.h>

       void insque(void *elem, void *prev);

       void remque(void *elem);

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       insque(), remque(): _SVID_SOURCE || _XOPEN_SOURCE >= 500

DESCRIPTION

       insque()  and  remque() are functions for manipulating doubly-linked lists.  Each element in the list is a structure of which the first two
       structure elements are a forward and a backward pointer.

       insque() inserts the element pointed to by elem immediately after the element pointed to by prev, which must not be NULL.

       remque() removes the element pointed to by elem from the doubly-linked list.

CONFORMING TO

       POSIX.1-2001.

NOTES

       Traditionally (e.g., SunOS, Linux libc 4 and libc 5), the arguments of these functions were of type struct qelem *, defined as:

	   struct qelem {
	       struct qelem *q_forw;
	       struct qelem *q_back;
	       char	     q_data[1];
	   };

       This is still what you will get if _GNU_SOURCE is defined before including <search.h>.

       The location of the prototypes for these functions differs among several versions of Unix.  The above is the POSIX version.   Some  systems
       place them in <string.h>.  Linux libc4 and libc 5 placed them in <stdlib.h>.

COLOPHON

       This  page is part of release 3.25 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

								    2008-07-11								 INSQUE(3)