summaryrefslogtreecommitdiff
path: root/libc/misc/tsearch
diff options
context:
space:
mode:
Diffstat (limited to 'libc/misc/tsearch')
-rw-r--r--libc/misc/tsearch/Makefile43
-rw-r--r--libc/misc/tsearch/tsearch.c190
2 files changed, 0 insertions, 233 deletions
diff --git a/libc/misc/tsearch/Makefile b/libc/misc/tsearch/Makefile
deleted file mode 100644
index 5f10c4026..000000000
--- a/libc/misc/tsearch/Makefile
+++ /dev/null
@@ -1,43 +0,0 @@
-# Makefile for uClibc
-#
-# Copyright (C) 2000 by Lineo, inc.
-# Copyright (C) 2000,2001 Erik Andersen <andersen@uclibc.org>
-#
-# This program 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 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 Library General Public License for more
-# details.
-#
-# You should have received a copy of the GNU Library General Public License
-# along with this program; if not, write to the Free Software Foundation, Inc.,
-# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-#
-# Derived in part from the Linux-8086 C library, the GNU C Library, and several
-# other sundry sources. Files within this library are copyright by their
-# respective copyright holders.
-
-TOPDIR=../../../
-include $(TOPDIR)Rules.mak
-
-MSRC=tsearch.c
-MOBJ=tsearch.o tfind.o tdelete.o twalk.o
-
-all: $(MOBJ) $(LIBC)
-
-$(LIBC): ar-target
-
-ar-target: $(MOBJ)
- $(AR) $(ARFLAGS) $(LIBC) $(MOBJ)
-
-$(MOBJ): $(MSRC)
- $(CC) $(CFLAGS) -DL_$* $< -c -o $*.o
- $(STRIPTOOL) -x -R .note -R .comment $*.o
-
-clean:
- rm -f *.[oa] *~ core
-
diff --git a/libc/misc/tsearch/tsearch.c b/libc/misc/tsearch/tsearch.c
deleted file mode 100644
index b584e2f15..000000000
--- a/libc/misc/tsearch/tsearch.c
+++ /dev/null
@@ -1,190 +0,0 @@
-/* Copyright (C) 1994 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
-
-The GNU C 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.
-
-The GNU C 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 the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
-
-/*
- * Tree search generalized from Knuth (6.2.2) Algorithm T just like
- * the AT&T man page says.
- *
- * The node_t structure is for internal use only, lint doesn't grok it.
- *
- * Written by reading the System V Interface Definition, not the code.
- *
- * Totally public domain.
- */
-/*LINTLIBRARY*/
-
-#include <search.h>
-#include <stdlib.h>
-
-/* This routine is not very bad. It makes many assumptions about
- * the compiler. It assumpts that the first field in node must be
- * the "key" field, which points to the datum. It is a very trick
- * stuff. H.J.
- */
-
-typedef struct node_t
-{
- void *key;
- struct node_t *left, *right;
-} node;
-
-#ifdef L_tsearch
-/* find or insert datum into search tree.
-char *key; key to be located
-register node **rootp; address of tree root
-int (*compar)(); ordering function
-*/
-
-void *tsearch(__const void *key, void **vrootp, __compar_fn_t compar)
-{
- register node *q;
- register node **rootp = (node **) vrootp;
-
- if (rootp == (struct node_t **)0)
- return ((struct node_t *)0);
- while (*rootp != (struct node_t *)0) /* Knuth's T1: */
- {
- int r;
-
- if ((r = (*compar)(key, (*rootp)->key)) == 0) /* T2: */
- return (*rootp); /* we found it! */
- rootp = (r < 0) ?
- &(*rootp)->left : /* T3: follow left branch */
- &(*rootp)->right; /* T4: follow right branch */
- }
- q = (node *) malloc(sizeof(node)); /* T5: key not found */
- if (q != (struct node_t *)0) /* make new node */
- {
- *rootp = q; /* link new node to old */
- q->key = (void *)key; /* initialize new node */
- q->left = q->right = (struct node_t *)0;
- }
- return (q);
-}
-#endif
-
-#ifdef L_tfind
-void *tfind(__const void *key, void * __const *vrootp, __compar_fn_t compar)
-{
- register node **rootp = (node **) vrootp;
-
- if (rootp == (struct node_t **)0)
- return ((struct node_t *)0);
- while (*rootp != (struct node_t *)0) /* Knuth's T1: */
- {
- int r;
-
- if ((r = (*compar)(key, (*rootp)->key)) == 0) /* T2: */
- return (*rootp); /* we found it! */
- rootp = (r < 0) ?
- &(*rootp)->left : /* T3: follow left branch */
- &(*rootp)->right; /* T4: follow right branch */
- }
- return NULL;
-}
-#endif
-
-#ifdef L_tdelete
-/* delete node with given key
-char *key; key to be deleted
-register node **rootp; address of the root of tree
-int (*compar)(); comparison function
-*/
-void *tdelete(__const void *key, void ** vrootp, __compar_fn_t compar)
-{
- node *p;
- register node *q;
- register node *r;
- int cmp;
- register node **rootp = (node **) vrootp;
-
- if (rootp == (struct node_t **)0 || (p = *rootp) == (struct node_t *)0)
- return ((struct node_t *)0);
- while ((cmp = (*compar)(key, (*rootp)->key)) != 0)
- {
- p = *rootp;
- rootp = (cmp < 0) ?
- &(*rootp)->left : /* follow left branch */
- &(*rootp)->right; /* follow right branch */
- if (*rootp == (struct node_t *)0)
- return ((struct node_t *)0); /* key not found */
- }
- r = (*rootp)->right; /* D1: */
- if ((q = (*rootp)->left) == (struct node_t *)0) /* Left (struct node_t *)0? */
- q = r;
- else if (r != (struct node_t *)0) /* Right link is null? */
- {
- if (r->left == (struct node_t *)0) /* D2: Find successor */
- {
- r->left = q;
- q = r;
- }
- else
- { /* D3: Find (struct node_t *)0 link */
- for (q = r->left; q->left != (struct node_t *)0; q = r->left)
- r = q;
- r->left = q->right;
- q->left = (*rootp)->left;
- q->right = (*rootp)->right;
- }
- }
- free((struct node_t *) *rootp); /* D4: Free node */
- *rootp = q; /* link parent to new node */
- return(p);
-}
-#endif
-
-#ifdef L_twalk
-/* Walk the nodes of a tree
-register node *root; Root of the tree to be walked
-register void (*action)(); Function to be called at each node
-register int level;
-*/
-static void trecurse(__const void *vroot, __action_fn_t action, int level)
-{
- register node *root = (node *) vroot;
-
- if (root->left == (struct node_t *)0 && root->right == (struct node_t *)0)
- (*action)(root, leaf, level);
- else
- {
- (*action)(root, preorder, level);
- if (root->left != (struct node_t *)0)
- trecurse(root->left, action, level + 1);
- (*action)(root, postorder, level);
- if (root->right != (struct node_t *)0)
- trecurse(root->right, action, level + 1);
- (*action)(root, endorder, level);
- }
-}
-
-/* void twalk(root, action) Walk the nodes of a tree
-node *root; Root of the tree to be walked
-void (*action)(); Function to be called at each node
-PTR
-*/
-void twalk(__const void *vroot, __action_fn_t action)
-{
- register __const node *root = (node *) vroot;
-
- if (root != (node *)0 && action != (__action_fn_t) 0)
- trecurse(root, action, 0);
-}
-#endif
-
-/* tsearch.c ends here */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 04:11:50 +0000