INSQUE(3)		   Linux Programmers Manual		    INSQUE(3)



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

SYNOPSIS
       #include 

       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 .

       The  location  of the prototypes for these functions differs among sev
       eral versions of Unix.  The above is the POSIX version.	 Some  systems
       place  them  in	.   Linux  libc4  and  libc 5 placed them in
       .

COLOPHON
       This page is part of release 3.05 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)