.
[glibc/history.git] / string / byteswap.h
blobb61d4dda885dfdc097ce856cf40d5ce56838dc9e
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 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.
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.
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., 59 Temple Place, Suite 330, Boston, MA
17 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 */