home *** CD-ROM | disk | FTP | other *** search
- /*
- * List_Init.c --
- *
- * Source code for the List_Init 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/list/RCS/List_Init.c,v 1.3 90/11/27 11:05:41 ouster Exp $ SPRITE (Berkeley)";
- #endif not lint
-
- #include <stdio.h>
- #include "list.h"
-
- extern void panic();
-
- /*
- * ----------------------------------------------------------------------------
- *
- * List_Init --
- *
- * Initialize a header pointer to point to an empty list. The List_Links
- * structure must already be allocated.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The header's pointers are modified to point to itself.
- *
- * ----------------------------------------------------------------------------
- */
- void
- List_Init(headerPtr)
- register List_Links *headerPtr; /* Pointer to a List_Links structure
- to be header */
- {
- if (headerPtr == (List_Links *) NIL || !headerPtr) {
- panic("List_Init: invalid header pointer.\n");
- }
- headerPtr->nextPtr = headerPtr;
- headerPtr->prevPtr = headerPtr;
- }
-