1 /* $NetBSD: bswap.c,v 1.2 2017/01/28 21:31:50 christos Exp $ */
2
3 /*
4 * Copyright (c) 2001 Kungliga Tekniska Högskolan
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
41 ROKEN_LIB_FUNCTION uint64_t ROKEN_LIB_CALL
bswap64(uint64_t val)42 bswap64 (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
58 ROKEN_LIB_FUNCTION unsigned int ROKEN_LIB_CALL
bswap32(unsigned int val)59 bswap32 (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
70 ROKEN_LIB_FUNCTION unsigned short ROKEN_LIB_CALL
bswap16(unsigned short val)71 bswap16 (unsigned short val)
72 {
73 return (val & 0xff) << 8 |
74 (val & 0xff00) >> 8;
75 }
76 #endif
77