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endian.in.h
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/*
libparted - a library for manipulating disk partitions
Copyright (C) 1998-2002, 2007, 2009-2014, 2019-2023, 2026 Free Software
Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* should only be #included by files in libparted */
#ifndef PED_ENDIAN_H_INCLUDED
#define PED_ENDIAN_H_INCLUDED
#include <stdint.h>
/* returns the n'th least significant byte */
#define _GET_BYTE(x, n) ( ((x) >> (8 * (n))) & 0xff )
#define _PED_SWAP16(x) ( (_GET_BYTE(x, 0) << 8) \
+ (_GET_BYTE(x, 1) << 0) )
#define _PED_SWAP32(x) ( (_GET_BYTE(x, 0) << 24) \
+ (_GET_BYTE(x, 1) << 16) \
+ (_GET_BYTE(x, 2) << 8) \
+ (_GET_BYTE(x, 3) << 0) )
#define _PED_SWAP64(x) ( (_GET_BYTE(x, 0) << 56) \
+ (_GET_BYTE(x, 1) << 48) \
+ (_GET_BYTE(x, 2) << 40) \
+ (_GET_BYTE(x, 3) << 32) \
+ (_GET_BYTE(x, 4) << 24) \
+ (_GET_BYTE(x, 5) << 16) \
+ (_GET_BYTE(x, 6) << 8) \
+ (_GET_BYTE(x, 7) << 0) )
#define PED_SWAP16(x) ((uint16_t) _PED_SWAP16( (uint16_t) (x) ))
#define PED_SWAP32(x) ((uint32_t) _PED_SWAP32( (uint32_t) (x) ))
#define PED_SWAP64(x) ((uint64_t) _PED_SWAP64( (uint64_t) (x) ))
#ifdef WORDS_BIGENDIAN
#define PED_CPU_TO_LE16(x) PED_SWAP16(x)
#define PED_CPU_TO_BE16(x) (x)
#define PED_CPU_TO_LE32(x) PED_SWAP32(x)
#define PED_CPU_TO_BE32(x) (x)
#define PED_CPU_TO_LE64(x) PED_SWAP64(x)
#define PED_CPU_TO_BE64(x) (x)
#define PED_LE16_TO_CPU(x) PED_SWAP16(x)
#define PED_BE16_TO_CPU(x) (x)
#define PED_LE32_TO_CPU(x) PED_SWAP32(x)
#define PED_BE32_TO_CPU(x) (x)
#define PED_LE64_TO_CPU(x) PED_SWAP64(x)
#define PED_BE64_TO_CPU(x) (x)
#else /* !WORDS_BIGENDIAN */
#define PED_CPU_TO_LE16(x) (x)
#define PED_CPU_TO_BE16(x) PED_SWAP16(x)
#define PED_CPU_TO_LE32(x) (x)
#define PED_CPU_TO_BE32(x) PED_SWAP32(x)
#define PED_CPU_TO_LE64(x) (x)
#define PED_CPU_TO_BE64(x) PED_SWAP64(x)
#define PED_LE16_TO_CPU(x) (x)
#define PED_BE16_TO_CPU(x) PED_SWAP16(x)
#define PED_LE32_TO_CPU(x) (x)
#define PED_BE32_TO_CPU(x) PED_SWAP32(x)
#define PED_LE64_TO_CPU(x) (x)
#define PED_BE64_TO_CPU(x) PED_SWAP64(x)
#endif /* !WORDS_BIGENDIAN */
#endif /* PED_ENDIAN_H_INCLUDED */