10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate /* Copyright (c) 1988 AT&T */
280Sstevel@tonic-gate /* All Rights Reserved */
290Sstevel@tonic-gate
30*6812Sraf #pragma ident "%Z%%M% %I% %E% SMI"
310Sstevel@tonic-gate
320Sstevel@tonic-gate /*
330Sstevel@tonic-gate * Swab bytes
340Sstevel@tonic-gate */
350Sstevel@tonic-gate
36*6812Sraf #pragma weak _swab = swab
370Sstevel@tonic-gate
38*6812Sraf #include "lint.h"
390Sstevel@tonic-gate #include <sys/types.h>
400Sstevel@tonic-gate #include <stdlib.h>
410Sstevel@tonic-gate
420Sstevel@tonic-gate
430Sstevel@tonic-gate #define STEP (void)((temp = *from++), (*to++ = *from++), (*to++ = temp))
440Sstevel@tonic-gate
450Sstevel@tonic-gate void
swab(const char * src,char * dest,ssize_t n)460Sstevel@tonic-gate swab(const char *src, char *dest, ssize_t n)
470Sstevel@tonic-gate {
480Sstevel@tonic-gate char temp;
490Sstevel@tonic-gate const char *from = (const char *)src;
500Sstevel@tonic-gate char *to = (char *)dest;
510Sstevel@tonic-gate
520Sstevel@tonic-gate if (n <= 1)
530Sstevel@tonic-gate return;
540Sstevel@tonic-gate n >>= 1; n++;
550Sstevel@tonic-gate /* round to multiple of 8 */
560Sstevel@tonic-gate while ((--n) & 07)
570Sstevel@tonic-gate STEP;
580Sstevel@tonic-gate n >>= 3;
590Sstevel@tonic-gate while (--n >= 0) {
600Sstevel@tonic-gate STEP; STEP; STEP; STEP;
610Sstevel@tonic-gate STEP; STEP; STEP; STEP;
620Sstevel@tonic-gate }
630Sstevel@tonic-gate }
64