NAME
insque, remque – doubly-linked list management
LIBRARY
Standard C Library (libc, -lc)
SYNOPSIS
#include <search.h>
void
insque(void *element1, void *pred);
void
remque(void *element);
DESCRIPTION
The insque() and remque() functions encapsulate the ever-repeating task of doing insertion and removal operations on doubly linked lists. The functions expect their arguments to point to a structure whose first and second members are pointers to the next and previous element, respectively. The insque() function also allows the pred argument to be a NULL pointer for the initialization of a new list's head element.
STANDARDS
The insque() and remque() functions conform to IEEE Std 1003.1-2001 (“POSIX.1”).
HISTORY
The insque() and remque() functions appeared in 4.2BSD. In FreeBSD 5.0, they reappeared conforming to IEEE Std 1003.1-2001 (“POSIX.1”).