X-Git-Url: http://winboard.nl/cgi-bin?p=xboard.git;a=blobdiff_plain;f=lists.c;h=68f1a5d7550d77313681e06c4726658b66e1e89c;hp=9f6d4b5e112b0b2f58e66daee65bf7b1f5d1de77;hb=HEAD;hpb=05bc30b15e31c427ce208495a889e9ff36e6642b diff --git a/lists.c b/lists.c index 9f6d4b5..68f1a5d 100644 --- a/lists.c +++ b/lists.c @@ -1,25 +1,30 @@ /* - * lists.c -- Functions to implement a double linked list - * XBoard $Id$ + * lists.c -- Functions to implement a double linked list XBoard * - * Copyright 1995 Free Software Foundation, Inc. + * Copyright 1995, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016 Free + * Software Foundation, Inc. + * + * Enhancements Copyright 2005 Alessandro Scotti * * ------------------------------------------------------------------------ - * This program is free software; you can redistribute it and/or modify + * + * GNU XBoard is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. + * the Free Software Foundation, either version 3 of the License, or (at + * your option) any later version. * - * This program 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 General Public License for more details. + * GNU XBoard 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 + * General Public License for more details. * * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA. - * ------------------------------------------------------------------------ + * along with this program. If not, see http://www.gnu.org/licenses/. * * + *------------------------------------------------------------------------ + ** See the file ChangeLog for a revision history. */ + +/* * This file could well be a part of backend.c, but I prefer it this * way. */ @@ -39,8 +44,8 @@ /* Check, if List l is empty; returns TRUE, if it is, FALSE * otherwise. */ -int ListEmpty(l) - List *l; +int +ListEmpty (List *l) { return(l->head == (ListNode *) &l->tail); } @@ -48,8 +53,8 @@ int ListEmpty(l) /* Initialize a list. Must be executed before list is used. */ -void ListNew(l) - List *l; +void +ListNew (List *l) { l->head = (ListNode *) &l->tail; l->tail = NULL; @@ -59,8 +64,8 @@ void ListNew(l) /* Remove node n from the list it is inside. */ -void ListRemove(n) - ListNode *n; +void +ListRemove (ListNode *n) { if (n->succ != NULL) { /* Be safe */ n->pred->succ = n->succ; @@ -73,8 +78,8 @@ void ListRemove(n) /* Delete node n. */ -void ListNodeFree(n) - ListNode *n; +void +ListNodeFree (ListNode *n) { if (n) { ListRemove(n); @@ -85,8 +90,8 @@ void ListNodeFree(n) /* Create a list node with size s. Returns NULL, if out of memory. */ -ListNode *ListNodeCreate(s) - size_t s; +ListNode * +ListNodeCreate (size_t s) { ListNode *n; @@ -100,8 +105,8 @@ ListNode *ListNodeCreate(s) /* Insert node n into the list of node m after m. */ -void ListInsert(m, n) - ListNode *m, *n; +void +ListInsert (ListNode *m, ListNode *n) { n->succ = m->succ; n->pred = m; @@ -112,9 +117,8 @@ void ListInsert(m, n) /* Add node n to the head of list l. */ -void ListAddHead(l, n) - List *l; - ListNode *n; +void +ListAddHead (List *l, ListNode *n) { ListInsert((ListNode *) &l->head, n); } @@ -122,9 +126,8 @@ void ListAddHead(l, n) /* Add node n to the tail of list l. */ -void ListAddTail(l, n) - List *l; - ListNode *n; +void +ListAddTail (List *l, ListNode *n) { ListInsert((ListNode *) l->tailPred, n); } @@ -133,9 +136,8 @@ void ListAddTail(l, n) /* Return element with number n of list l. (NULL, if n doesn't exist.) * Counting starts with 0. */ -ListNode *ListElem(l, n) - List *l; - int n; +ListNode * +ListElem (List *l, int n) { ListNode *ln;