xref: /aosp_15_r20/bionic/libc/include/byteswap.h (revision 8d67ca893c1523eb926b9080dbe4e2ffd2a27ba1)
1*8d67ca89SAndroid Build Coastguard Worker /*
2*8d67ca89SAndroid Build Coastguard Worker  * Copyright (C) 2008 The Android Open Source Project
3*8d67ca89SAndroid Build Coastguard Worker  * All rights reserved.
4*8d67ca89SAndroid Build Coastguard Worker  *
5*8d67ca89SAndroid Build Coastguard Worker  * Redistribution and use in source and binary forms, with or without
6*8d67ca89SAndroid Build Coastguard Worker  * modification, are permitted provided that the following conditions
7*8d67ca89SAndroid Build Coastguard Worker  * are met:
8*8d67ca89SAndroid Build Coastguard Worker  *  * Redistributions of source code must retain the above copyright
9*8d67ca89SAndroid Build Coastguard Worker  *    notice, this list of conditions and the following disclaimer.
10*8d67ca89SAndroid Build Coastguard Worker  *  * Redistributions in binary form must reproduce the above copyright
11*8d67ca89SAndroid Build Coastguard Worker  *    notice, this list of conditions and the following disclaimer in
12*8d67ca89SAndroid Build Coastguard Worker  *    the documentation and/or other materials provided with the
13*8d67ca89SAndroid Build Coastguard Worker  *    distribution.
14*8d67ca89SAndroid Build Coastguard Worker  *
15*8d67ca89SAndroid Build Coastguard Worker  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16*8d67ca89SAndroid Build Coastguard Worker  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17*8d67ca89SAndroid Build Coastguard Worker  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18*8d67ca89SAndroid Build Coastguard Worker  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19*8d67ca89SAndroid Build Coastguard Worker  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20*8d67ca89SAndroid Build Coastguard Worker  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21*8d67ca89SAndroid Build Coastguard Worker  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22*8d67ca89SAndroid Build Coastguard Worker  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23*8d67ca89SAndroid Build Coastguard Worker  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24*8d67ca89SAndroid Build Coastguard Worker  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25*8d67ca89SAndroid Build Coastguard Worker  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26*8d67ca89SAndroid Build Coastguard Worker  * SUCH DAMAGE.
27*8d67ca89SAndroid Build Coastguard Worker  */
28*8d67ca89SAndroid Build Coastguard Worker 
29*8d67ca89SAndroid Build Coastguard Worker #pragma once
30*8d67ca89SAndroid Build Coastguard Worker 
31*8d67ca89SAndroid Build Coastguard Worker /**
32*8d67ca89SAndroid Build Coastguard Worker  * @file byteswap.h
33*8d67ca89SAndroid Build Coastguard Worker  * @brief Byte-swapping macros.
34*8d67ca89SAndroid Build Coastguard Worker  */
35*8d67ca89SAndroid Build Coastguard Worker 
36*8d67ca89SAndroid Build Coastguard Worker #include <sys/cdefs.h>
37*8d67ca89SAndroid Build Coastguard Worker #include <sys/endian.h>
38*8d67ca89SAndroid Build Coastguard Worker 
39*8d67ca89SAndroid Build Coastguard Worker /**
40*8d67ca89SAndroid Build Coastguard Worker  * [bswap_16(3)](https://man7.org/linux/man-pages/man3/bswap_16.3.html) swaps the bytes in a
41*8d67ca89SAndroid Build Coastguard Worker  * 16-bit value.
42*8d67ca89SAndroid Build Coastguard Worker  */
43*8d67ca89SAndroid Build Coastguard Worker #define bswap_16(x) __swap16(x)
44*8d67ca89SAndroid Build Coastguard Worker 
45*8d67ca89SAndroid Build Coastguard Worker /**
46*8d67ca89SAndroid Build Coastguard Worker  * [bswap_32(3)](https://man7.org/linux/man-pages/man3/bswap_32.3.html) swaps the bytes in a
47*8d67ca89SAndroid Build Coastguard Worker  * 32-bit value.
48*8d67ca89SAndroid Build Coastguard Worker  */
49*8d67ca89SAndroid Build Coastguard Worker #define bswap_32(x) __swap32(x)
50*8d67ca89SAndroid Build Coastguard Worker 
51*8d67ca89SAndroid Build Coastguard Worker /**
52*8d67ca89SAndroid Build Coastguard Worker  * [bswap_64(3)](https://man7.org/linux/man-pages/man3/bswap_64.3.html) swaps the bytes in a
53*8d67ca89SAndroid Build Coastguard Worker  * 64-bit value.
54*8d67ca89SAndroid Build Coastguard Worker  */
55*8d67ca89SAndroid Build Coastguard Worker #define bswap_64(x) __swap64(x)
56