From cdfd2afc68472a09968626073b8f669f6836b3cf Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Tue, 21 Aug 2001 04:24:24 +0000 Subject: Add byteswap.h, per glibc --- include/byteswap.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 include/byteswap.h (limited to 'include') diff --git a/include/byteswap.h b/include/byteswap.h new file mode 100644 index 000000000..b61d4dda8 --- /dev/null +++ b/include/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 Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; 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 + + +/* 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 */ -- cgit v1.2.3