1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29/*	Copyright (c) 1988 AT&T	*/
30/*	  All Rights Reserved  	*/
31
32
33#include <sys/types.h>
34#if defined(_KERNEL)
35#include <sys/systm.h>
36#else
37#include <string.h>
38#include <stddef.h>
39#endif
40
41/*
42 * Return the ptr in sptr at which the character c1 appears;
43 * or NULL if not found in n chars; don't stop at \0.
44 */
45void *
46memchr(const void *sptr, int c1, size_t n)
47{
48	if (n != 0) {
49		unsigned char c = (unsigned char)c1;
50		const unsigned char *sp = sptr;
51
52		do {
53			if (*sp++ == c)
54				return ((void *)--sp);
55		} while (--n != 0);
56	}
57	return (NULL);
58}
59