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endian.h
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/*
* This file is part of the Aaru Data Preservation Suite.
* Copyright (c) 2019-2026 Natalia Portillo.
*
* This 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.
*
* This 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 this library; if not, see <http://www.gnu.org/licenses/>.
*/
#ifndef LIBAARUFORMAT_ENDIAN_H
#define LIBAARUFORMAT_ENDIAN_H
#ifdef _MSC_VER
#include <stdlib.h>
#define bswap_16(x) _byteswap_ushort(x)
#define bswap_32(x) _byteswap_ulong(x)
#define bswap_64(x) _byteswap_uint64(x)
#elif defined(__APPLE__)
// Mac OS X / Darwin features
#include <libkern/OSByteOrder.h>
#define bswap_16(x) OSSwapInt16(x)
#define bswap_32(x) OSSwapInt32(x)
#define bswap_64(x) OSSwapInt64(x)
#elif defined(__sun) || defined(sun)
#include <sys/byteorder.h>
#define bswap_16(x) BSWAP_16(x)
#define bswap_32(x) BSWAP_32(x)
#define bswap_64(x) BSWAP_64(x)
#elif defined(__FreeBSD__)
#include <sys/endian.h>
#define bswap_16(x) bswap16(x)
#define bswap_32(x) bswap32(x)
#define bswap_64(x) bswap64(x)
#elif defined(__OpenBSD__)
#include <sys/types.h>
#define bswap_16(x) swap16(x)
#define bswap_32(x) swap32(x)
#define bswap_64(x) swap64(x)
#elif defined(__NetBSD__)
#include <machine/bswap.h>
#include <sys/types.h>
#if defined(__BSWAP_RENAME) && !defined(__bswap_32)
#define bswap_16(x) bswap16(x)
#define bswap_32(x) bswap32(x)
#define bswap_64(x) bswap64(x)
#endif
#elif defined(__linux__)
#include <byteswap.h>
#else
#include <stdint.h>
#define bswap_16(x) ((uint16_t)((((uint16_t)(x) & 0xff00) >> 8) | (((uint16_t)(x) & 0x00ff) << 8)))
#define bswap_32(x) \
((uint32_t)((((uint32_t)(x) & 0xff000000) >> 24) | (((uint32_t)(x) & 0x00ff0000) >> 8) | \
(((uint32_t)(x) & 0x0000ff00) << 8) | (((uint32_t)(x) & 0x000000ff) << 24)))
#define bswap_64(x) \
((uint64_t)((((uint64_t)(x) & 0xff00000000000000ULL) >> 56) | (((uint64_t)(x) & 0x00ff000000000000ULL) >> 40) | \
(((uint64_t)(x) & 0x0000ff0000000000ULL) >> 24) | (((uint64_t)(x) & 0x000000ff00000000ULL) >> 8) | \
(((uint64_t)(x) & 0x00000000ff000000ULL) << 8) | (((uint64_t)(x) & 0x0000000000ff0000ULL) << 24) | \
(((uint64_t)(x) & 0x000000000000ff00ULL) << 40) | (((uint64_t)(x) & 0x00000000000000ffULL) << 56)))
#endif
#endif // LIBAARUFORMAT_ENDIAN_H