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Diffstat (limited to 'newlib/libc/search/tdelete.c')
-rw-r--r--newlib/libc/search/tdelete.c67
1 files changed, 0 insertions, 67 deletions
diff --git a/newlib/libc/search/tdelete.c b/newlib/libc/search/tdelete.c
deleted file mode 100644
index e849ada81..000000000
--- a/newlib/libc/search/tdelete.c
+++ /dev/null
@@ -1,67 +0,0 @@
-/* $NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $ */
-
-/*
- * 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.
- */
-
-#include <sys/cdefs.h>
-#if 0
-#if defined(LIBC_SCCS) && !defined(lint)
-__RCSID("$NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $");
-#endif /* LIBC_SCCS and not lint */
-#endif
-
-#include <assert.h>
-#define _SEARCH_PRIVATE
-#include <search.h>
-#include <stdlib.h>
-
-
-/* delete node with given key */
-void *
-tdelete(vkey, vrootp, compar)
- const void *vkey; /* key to be deleted */
- void **vrootp; /* address of the root of tree */
- int (*compar)(const void *, const void *);
-{
- node_t **rootp = (node_t **)vrootp;
- node_t *p, *q, *r;
- int cmp;
-
- if (rootp == NULL || (p = *rootp) == NULL)
- return NULL;
-
- while ((cmp = (*compar)(vkey, (*rootp)->key)) != 0) {
- p = *rootp;
- rootp = (cmp < 0) ?
- &(*rootp)->llink : /* follow llink branch */
- &(*rootp)->rlink; /* follow rlink branch */
- if (*rootp == NULL)
- return NULL; /* key not found */
- }
- r = (*rootp)->rlink; /* D1: */
- if ((q = (*rootp)->llink) == NULL) /* Left NULL? */
- q = r;
- else if (r != NULL) { /* Right link is NULL? */
- if (r->llink == NULL) { /* D2: Find successor */
- r->llink = q;
- q = r;
- } else { /* D3: Find NULL link */
- for (q = r->llink; q->llink != NULL; q = r->llink)
- r = q;
- r->llink = q->rlink;
- q->llink = (*rootp)->llink;
- q->rlink = (*rootp)->rlink;
- }
- }
- free(*rootp); /* D4: Free node */
- *rootp = q; /* link parent to new node */
- return p;
-}