newlib-cygwin/newlib/libc/iconv/lib/endian.h

74 lines
2.5 KiB
C

/*
* Copyright (c) 2003-2004, Artem B. Bityuckiy
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef __ICONV_CES_ENDIAN_H__
#define __ICONV_CES_ENDIAN_H__
#include <sys/param.h>
#if (BYTE_ORDER == LITTLE_ENDIAN)
# define ICONV_BETOHS(s) \
((((s) << 8) & 0xFF00) | (((s) >> 8) & 0x00FF))
# define ICONV_BETOHL(l) \
((((l) << 24) & 0xFF000000) | \
(((l) << 8) & 0x00FF0000) | \
(((l) >> 8) & 0x0000FF00) | \
(((l) >> 24) & 0x000000FF))
# define ICONV_LETOHS(s) (s)
# define ICONV_LETOHL(l) (l)
# define ICONV_HTOLES(s) ICONV_LETOHS (s)
# define ICONV_HTOLEL(l) ICONV_LETOHL (l)
# define ICONV_HTOBES(s) ICONV_BETOHS (s)
# define ICONV_HTOBEL(l) ICONV_BETOHL (l)
#elif (BYTE_ORDER == BIG_ENDIAN)
# define ICONV_BETOHS(s) (s)
# define ICONV_BETOHL(l) (l)
# define ICONV_LETOHS(s) \
((((s) << 8) & 0xFF00) | (((s) >> 8) & 0x00FF))
# define ICONV_LETOHL(l) \
((((l) << 24) & 0xFF000000) | \
(((l) << 8) & 0x00FF0000) | \
(((l) >> 8) & 0x0000FF00) | \
(((l) >> 24) & 0x000000FF))
# define ICONV_HTOBES(s) ICONV_BETOHS (s)
# define ICONV_HTOBEL(l) ICONV_BETOHL (l)
# define ICONV_HTOLES(s) ICONV_LETOHS (s)
# define ICONV_HTOLEL(l) ICONV_LETOHL (l)
#else
# error "Unknown byte order."
#endif
#endif /* !__ICONV_CES_ENDIAN_H__ */