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- /*
- * insque.c --
- *
- * Source code for the "insque" library procedure.
- *
- * Copyright 1988 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- */
-
- #ifndef lint
- static char rcsid[] = "$Header: /sprite/src/lib/c/etc/RCS/insque.c,v 1.2 92/11/21 18:25:47 mottsmth Exp $ SPRITE (Berkeley)";
- #endif not lint
-
- struct qelem {
- struct qelem *q_forw;
- struct qelem *q_back;
- char q_data[4];
- };
-
-
- /*
- *----------------------------------------------------------------------
- *
- * insque --
- *
- * Insert a new element into a queue after a given predecessor.
- *
- * Results:
- * None.
- *
- * Side effects:
- * Elem is linked in after pred.
- *
- *----------------------------------------------------------------------
- */
-
- insque(elem, pred)
- register struct qelem *elem;
- register struct qelem *pred;
- {
- elem->q_forw = pred->q_forw;
- elem->q_back = pred;
- pred->q_forw = elem;
- elem->q_forw->q_back = elem;
- }
-