ReactOS  0.4.15-dev-3440-g915569a
byteswap.h
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1 /* Copyright (C) 1997 Free Software Foundation, Inc.
2  This file is part of the GNU C Library.
3 
4  The GNU C Library is free software; you can redistribute it and/or
5  modify it under the terms of the GNU Lesser General Public
6  License as published by the Free Software Foundation; either
7  version 2.1 of the License, or (at your option) any later version.
8 
9  The GNU C Library is distributed in the hope that it will be useful,
10  but WITHOUT ANY WARRANTY; without even the implied warranty of
11  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12  Lesser General Public License for more details.
13 
14  You should have received a copy of the GNU Lesser General Public
15  License along with the GNU C Library; if not, write to the Free
16  Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17  Boston, MA 02110-1301, USA.
18 */
19 
20 #ifndef _BYTESWAP_H
21 #define _BYTESWAP_H 1
22 
23 /* Get the machine specific, optimized definitions. */
24 #include "byteswap1.h"
25 
26 
27 /* The following definitions must all be macros since otherwise some
28  of the possible optimizations are not possible. */
29 
30 /* Return a value with all bytes in the 16 bit argument swapped. */
31 #define bswap_16(x) __bswap_16 (x)
32 
33 /* Return a value with all bytes in the 32 bit argument swapped. */
34 #define bswap_32(x) __bswap_32 (x)
35 
36 #if defined __GNUC__ && __GNUC__ >= 2
37 /* Return a value with all bytes in the 64 bit argument swapped. */
38 # define bswap_64(x) __bswap_64 (x)
39 #endif
40 
41 #endif /* byteswap.h */