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/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 *
 * Copyright (C) 2002     Manuel Novoa III
 * Copyright (C) 2000-2005 Erik Andersen <andersen@uclibc.org>
 *
 * Licensed under the LGPL v2.1, code originally in uclibc
 *
 ****************************************************************************/
#include <string.h>

/* NOTE: This is the simple-minded O(len(s1) * len(s2)) worst-case approach. */

char *strstr(const char *s1, const char *s2)
{
	register const char *s = s1;
	register const char *p = s2;

	do {
		if (!*p) {
			return (char *) s1;;
		}
		if (*p == *s) {
			++p;
			++s;
		} else {
			p = s2;
			if (!*s) {
				return NULL;
			}
			s = ++s1;
		}
	} while (1);
}