2 * Copyright (c) 1989, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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37 #if defined(LIBC_SCCS) && !defined(lint)
38 static char sccsid[] = "@(#)lsearch.c 8.1 (Berkeley) 6/4/93";
39 #endif /* LIBC_SCCS and not lint */
41 #include <sys/types.h>
45 static char *linear_base();
48 lsearch(key, base, nelp, width, compar)
53 return(linear_base(key, base, nelp, width, compar, 1));
57 lfind(key, base, nelp, width, compar)
62 return(linear_base(key, base, nelp, width, compar, 0));
66 linear_base(key, base, nelp, width, compar, add_flag)
69 int (*compar)(), add_flag;
71 register char *element, *end;
73 end = base + *nelp * width;
74 for (element = base; element < end; element += width)
75 if (!compar(element, key)) /* key found */
78 if (!add_flag) /* key not found */
82 * The UNIX System User's Manual, 1986 edition claims that
83 * a NULL pointer is returned by lsearch with errno set
84 * appropriately, if there is not enough room in the table
85 * to add a new item. This can't be done as none of these
86 * routines have any method of determining the size of the
87 * table. This comment was isn't in the 1986-87 System V
91 bcopy(key, end, (int)width);