strnstr (const char *s,
         const char *find,
         size_t slen)
{
	char c, sc;
	size_t len;

	if ((c = *find++) != '\0') {
		len = strlen (find);
		do {
			do {
				if (slen-- < 1 || (sc = *s++) == '\0')
					return (NULL);
			} while (sc != c);
			if (len > slen)
				return (NULL);
		} while (strncmp(s, find, len) != 0);
		s--;
	}
	return ((char *)s);
}
strnstr (const char *s,
         const char *find,
         size_t slen)
{
	char c, sc;
	size_t len;

	if ((c = *find++) != '\0') {
		len = strlen (find);
		do {
			do {
				if (slen-- < 1 || (sc = *s++) == '\0')
					return (NULL);
			} while (sc != c);
			if (len > slen)
				return (NULL);
		} while (strncmp(s, find, len) != 0);
		s--;
	}
	return ((char *)s);
}