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Diffstat (limited to 'string/byteswap.h')
| -rw-r--r-- | string/byteswap.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/string/byteswap.h b/string/byteswap.h new file mode 100644 index 0000000000..4a3e680cc2 --- /dev/null +++ b/string/byteswap.h @@ -0,0 +1,40 @@ +/* Copyright (C) 1997 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _BYTESWAP_H +#define _BYTESWAP_H 1 + +/* Get the machine specific, optimized definitions. */ +#include <bits/byteswap.h> + + +/* The following definitions must all be macros since otherwise some + of the possible optimizations are not possible. */ + +/* Return a value with all bytes in the 16 bit argument swapped. */ +#define bswap_16(x) __bswap_16 (x) + +/* Return a value with all bytes in the 32 bit argument swapped. */ +#define bswap_32(x) __bswap_32 (x) + +#if defined __GNUC__ && __GNUC__ >= 2 +/* Return a value with all bytes in the 64 bit argument swapped. */ +# define bswap_64(x) __bswap_64 (x) +#endif + +#endif /* byteswap.h */ |