INSQUE(3) | Library Functions Manual | INSQUE(3)

# NAME

`insque`, `remque` —
insert/remove element from a queue

# LIBRARY

Standard C Library (libc, -lc)

# SYNOPSIS

`#include <search.h>`

void
`insque`(void *elem, void *pred);

void
`remque`(void *elem);

# DESCRIPTION

`insque`() and `remque`() manipulate queues built from doubly linked lists. The queue can be either circular or linear. 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 linear list's head element.

# STANDARDS

The `insque`() and `remque`() functions conform to IEEE Std 1003.1-2001 (“POSIX.1”).

# HISTORY

The `insque`() and `remque`() are derived from the ‘insque’ and ‘remque’ instructions on the VAX. They first appeared in 4.2BSD.

April 30, 2010 | NetBSD 9.0