1/*	$NetBSD: bswap.c,v 1.2 2017/01/28 21:31:50 christos Exp $	*/
2
3/*
4 * Copyright (c) 2001 Kungliga Tekniska H��gskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 *    may be used to endorse or promote products derived from this software
21 *    without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35
36#include <config.h>
37#include <krb5/roken.h>
38
39#ifndef HAVE_BSWAP64
40
41ROKEN_LIB_FUNCTION uint64_t ROKEN_LIB_CALL
42bswap64 (uint64_t val)
43{
44    return
45        (val & 0xffULL) << 56 |
46	(val & 0xff00ULL) << 40 |
47	(val & 0xff0000ULL) << 24 |
48	(val & 0xff000000ULL) << 8 |
49	(val & 0xff00000000ULL) >> 8 |
50	(val & 0xff0000000000ULL) >> 24 |
51	(val & 0xff000000000000ULL) >> 40 |
52	(val & 0xff00000000000000ULL) >> 56 ;
53}
54#endif
55
56#ifndef HAVE_BSWAP32
57
58ROKEN_LIB_FUNCTION unsigned int ROKEN_LIB_CALL
59bswap32 (unsigned int val)
60{
61    return (val & 0xff) << 24 |
62	(val & 0xff00) << 8 |
63	(val & 0xff0000) >> 8 |
64	(val & 0xff000000) >> 24;
65}
66#endif
67
68#ifndef HAVE_BSWAP16
69
70ROKEN_LIB_FUNCTION unsigned short ROKEN_LIB_CALL
71bswap16 (unsigned short val)
72{
73    return (val & 0xff) << 8 |
74	(val & 0xff00) >> 8;
75}
76#endif
77