X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;ds=sidebyside;f=src%2Flibpspp%2Fabt.c;h=74b2ceb387f54d04e669cfbadb7eb4e7589c89a3;hb=9de93455099eff93bb2d8b730eea8413e7ab1121;hp=12da494a025fbc81c003b788b88aac9ca76c1669;hpb=f5c108becd49d78f4898cab11352291f5689d24e;p=pspp-builds.git

diff --git a/src/libpspp/abt.c b/src/libpspp/abt.c
index 12da494a..74b2ceb3 100644
--- a/src/libpspp/abt.c
+++ b/src/libpspp/abt.c
@@ -1,20 +1,18 @@
-/* PSPP - computes sample statistics.
+/* PSPP - a program for statistical analysis.
    Copyright (C) 2007 Free Software Foundation, Inc.
 
-   This program 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.
+   This program 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 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.
+   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.
 
    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., 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301, USA. */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
 /* Augmented binary tree (ABT) data structure. */
 
@@ -120,7 +118,7 @@ abt_insert (struct abt *abt, struct abt_node *node)
    the tree, if AFTER is true, or the last node, if AFTER is
    false. */
 static inline void
-insert_relative (struct abt *abt, struct abt_node *p, bool after,
+insert_relative (struct abt *abt, const struct abt_node *p, bool after,
                  struct abt_node *node)
 {
   node->down[0] = NULL;
@@ -147,8 +145,8 @@ insert_relative (struct abt *abt, struct abt_node *p, bool after,
           p = p->down[dir];
           dir = !after;
         }
-      p->down[dir] = node;
-      node->up = p;
+      ((struct abt_node *) p)->down[dir] = node;
+      node->up = (struct abt_node *) p;
       abt_reaugmented (abt, node);
     }
 
@@ -169,7 +167,7 @@ abt_insert_after (struct abt *abt,
                   const struct abt_node *p, struct abt_node *node)
 {
   assert (abt->compare == NULL);
-  insert_relative (abt, (struct abt_node *) p, true, node);
+  insert_relative (abt, p, true, node);
 }
 
 /* Inserts NODE before node P in ABT.
@@ -182,7 +180,7 @@ abt_insert_before (struct abt *abt,
                    const struct abt_node *p, struct abt_node *node)
 {
   assert (abt->compare == NULL);
-  insert_relative (abt, (struct abt_node *) p, false, node);
+  insert_relative (abt, p, false, node);
 }
 
 /* Deletes P from ABT. */