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authorChristopher R. Hertel <crh@samba.org>1997-10-30 18:05:56 +0000
committerChristopher R. Hertel <crh@samba.org>1997-10-30 18:05:56 +0000
commit3e0fb1883cb8100d2cb696eb61fbc2798cb9da49 (patch)
treeee7183a0dae26cc2239ba162589df3061fa3ccec /source3/ubiqx/ubi_sLinkList.c
parentfcaacea7850d09ea943d36f6c1871e412760aa96 (diff)
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Modified Files:
ubiqx/Makefile ubiqx/README.UBI Added new modules to the Makefile. Changed the text of the README to reflect the directory change. Added Files: ubiqx/ubi_AVLtree.c ubiqx/ubi_AVLtree.h ubiqx/ubi_BinTree.c ubiqx/ubi_BinTree.h ubiqx/ubi_SplayTree.c ubiqx/ubi_SplayTree.h ubiqx/ubi_StackQueue.c ubiqx/ubi_StackQueue.h ubiqx/ubi_sLinkList.c ubiqx/ubi_sLinkList.h This is the remainder of the toolkit. A quick rundown: sLinkList = A simple singly-linked list. StackQueue = Implements both a stack and a queue. dLinkList = (Not added 'cause it's already there.) A doubly-linked list. BinTree = Base level binary tree module. (No height balancing, just the basics.) AVLtree = Descendant type of BinTree. Implements a height-balanced (AVL) binary tree. SplayTree = Descendant type of BinTree. Implements a splay-balanced binary tree. Renamed Files: ubiqx/COPYING.LGPL ==> ubiqx/COPYING.LIB This matches the naming that GNU suggests. (This used to be commit c6205dd45e455a4a228a3411b95fa569e0ea00e1)
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+/* ========================================================================== **
+ * ubi_sLinkList.c
+ *
+ * Copyright (C) 1997 by Christopher R. Hertel
+ *
+ * Email: crh@ubiqx.mn.org
+ * -------------------------------------------------------------------------- **
+ * This module implements a really simple singly-linked list.
+ * -------------------------------------------------------------------------- **
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * -------------------------------------------------------------------------- **
+ *
+ * Revision 0.2 1997/10/21 03:35:18 crh
+ * Added parameter <After> in function Insert(). Made necessary changes
+ * to macro AddHead() and added macro AddHere().
+ *
+ * Revision 0.1 1997/10/16 02:53:45 crh
+ * Initial Revision.
+ *
+ * ========================================================================== **
+ */
+
+#include "ubi_sLinkList.h"
+
+/* ========================================================================== **
+ * Functions...
+ */
+
+ubi_slListPtr ubi_slInitList( ubi_slListPtr ListPtr )
+ /* ------------------------------------------------------------------------ **
+ * Initialize a singly-linked list header.
+ *
+ * Input: ListPtr - A pointer to the list structure that is to be
+ * initialized for use.
+ *
+ * Output: A pointer to the initialized list header (i.e., same as
+ * <ListPtr>).
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ ListPtr->Head = NULL;
+ ListPtr->count = 0;
+ return( ListPtr );
+ } /* ubi_slInitList */
+
+ubi_slNodePtr ubi_slInsert( ubi_slListPtr ListPtr,
+ ubi_slNodePtr New,
+ ubi_slNodePtr After )
+ /* ------------------------------------------------------------------------ **
+ * Insert a new node at the head of the list.
+ *
+ * Input: ListPtr - A pointer to the list into which the node is to
+ * be inserted.
+ * New - Pointer to the node that is to be added to the list.
+ * After - Pointer to a list in a node after which the new node
+ * will be inserted. If NULL, then the new node will
+ * be added at the head of the list.
+ *
+ * Output: A pointer to the node that was inserted into the list (i.e.,
+ * the same as <New>).
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ ubi_slNodePtr *PredPtr;
+
+ PredPtr = ( NULL == After ) ? &(ListPtr->Head) : &(After->Next);
+ New->Next = *PredPtr;
+ *PredPtr = New;
+ ++(ListPtr->count);
+ return( New );
+ } /* ubi_slInsert */
+
+ubi_slNodePtr ubi_slRemove( ubi_slListPtr ListPtr )
+ /* ------------------------------------------------------------------------ **
+ * Remove a node from the head of the list.
+ *
+ * Input: ListPtr - A pointer to the list from which the node is to be
+ * removed.
+ *
+ * Output: A pointer to the node that was removed.
+ *
+ * ------------------------------------------------------------------------ **
+ */
+ {
+ ubi_slNodePtr Old = ListPtr->Head;
+
+ if( NULL != Old )
+ {
+ ListPtr->Head = Old->Next;
+ --(ListPtr->count);
+ }
+ return( Old );
+ } /* ubi_slRemove */
+
+
+/* ================================ The End ================================= */