lib/libc/stdlib/remque.c

   1 /*
   2  * Initial implementation:
   3  * Copyright (c) 2002 Robert Drehmel
   4  * All rights reserved.
   5  *
   6  * As long as the above copyright statement and this notice remain
   7  * unchanged, you can do what ever you want with this file.
   8  *
   9  * $FreeBSD: src/lib/libc/stdlib/remque.c,v 1.3 2003/01/04 07:34:41 tjr Exp $
  10  */
  11
  12 #define _SEARCH_PRIVATE
  13 #include <search.h>
  14 #include <stdlib.h>     /* for NULL */
  15
  16 void
  17 remque(void *element)
  18 {
  19         struct que_elem *prev, *next, *elem;
  20
  21         elem = (struct que_elem *)element;
  22
  23         prev = elem->prev;
  24         next = elem->next;
  25
  26         if (prev != NULL)
  27                 prev->next = next;
  28         if (next != NULL)
  29                 next->prev = prev;
  30 }