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[glibc.git] / string / byteswap.h
blob4a3e680cc2867d47267883b4c0f7f44ae8fb0186
1 /* Copyright (C) 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
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 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
19 #ifndef _BYTESWAP_H
20 #define _BYTESWAP_H 1
22 /* Get the machine specific, optimized definitions. */
23 #include <bits/byteswap.h>
26 /* The following definitions must all be macros since otherwise some
27 of the possible optimizations are not possible. */
29 /* Return a value with all bytes in the 16 bit argument swapped. */
30 #define bswap_16(x) __bswap_16 (x)
32 /* Return a value with all bytes in the 32 bit argument swapped. */
33 #define bswap_32(x) __bswap_32 (x)
35 #if defined __GNUC__ && __GNUC__ >= 2
36 /* Return a value with all bytes in the 64 bit argument swapped. */
37 # define bswap_64(x) __bswap_64 (x)
38 #endif
40 #endif /* byteswap.h */