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authorcvs2svn <admin@example.com>2025-04-14 17:32:06 +0000
committercvs2svn <admin@example.com>2025-04-14 17:32:06 +0000
commiteb8dd9dca1228af0cd132f515509051ecfabf6f6 (patch)
treeedb6da6af7e865d488dc1a29309f1e1ec226e603 /src/lib/libc/stdlib/lsearch.c
parent247f0352e0ed72a4f476db9dc91f4d982bc83eb2 (diff)
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This commit was manufactured by cvs2git to create tag 'tb_20250414'.tb_20250414
Diffstat (limited to 'src/lib/libc/stdlib/lsearch.c')
-rw-r--r--src/lib/libc/stdlib/lsearch.c70
1 files changed, 0 insertions, 70 deletions
diff --git a/src/lib/libc/stdlib/lsearch.c b/src/lib/libc/stdlib/lsearch.c
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1/* $OpenBSD: lsearch.c,v 1.7 2021/12/08 22:06:28 cheloha Exp $ */
2
3/*
4 * Copyright (c) 1989, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Roger L. Snyder.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <sys/types.h>
36#include <string.h>
37#include <search.h>
38
39typedef int (*cmp_fn_t)(const void *, const void *);
40
41void *
42lsearch(const void *key, void *base, size_t *nelp, size_t width,
43 cmp_fn_t compar)
44{
45 void *element = lfind(key, base, nelp, width, compar);
46
47 /*
48 * Use memmove(3) to ensure the key is copied cleanly into the
49 * array, even if the key overlaps with the end of the array.
50 */
51 if (element == NULL) {
52 element = memmove((char *)base + *nelp * width, key, width);
53 *nelp += 1;
54 }
55 return element;
56}
57
58void *
59lfind(const void *key, const void *base, size_t *nelp, size_t width,
60 cmp_fn_t compar)
61{
62 const char *element, *end;
63
64 end = (const char *)base + *nelp * width;
65 for (element = base; element < end; element += width)
66 if (!compar(key, element)) /* key found */
67 return((void *)element);
68 return NULL;
69}
70DEF_WEAK(lfind);