--- Libc/Libc-1725.40.4/string/FreeBSD/swab.c
+++ Libc/Libc-320/string/FreeBSD/swab.c
@@ -13,6 +13,10 @@
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by the University of
+ *	California, Berkeley and its contributors.
  * 4. Neither the name of the University nor the names of its contributors
  *    may be used to endorse or promote products derived from this software
  *    without specific prior written permission.
@@ -34,19 +38,17 @@
 static char sccsid[] = "@(#)swab.c	8.1 (Berkeley) 6/4/93";
 #endif /* LIBC_SCCS and not lint */
 #include <sys/cdefs.h>
-__FBSDID("$FreeBSD: src/lib/libc/string/swab.c,v 1.7 2007/01/09 00:28:12 imp Exp $");
+__FBSDID("$FreeBSD: src/lib/libc/string/swab.c,v 1.5 2002/08/30 20:33:05 robert Exp $");
 
-#include <unistd.h>
+#include <string.h>
 
 void
-swab(const void * __restrict from, void * __restrict to, ssize_t len)
+swab(const void * __restrict from, void * __restrict to, size_t len)
 {
 	unsigned long temp;
 	int n;
 	char *fp, *tp;
 
-	if (len <= 0)
-		return;
 	n = len >> 1;
 	fp = (char *)from;
 	tp = (char *)to;