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portable_endian.h
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portable_endian.h
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// "License": Public Domain
// I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for
// whatever you like. In case there are jurisdictions that don't support putting things in the
// public domain you can also consider it to be "dual licensed" under the BSD, MIT and Apache
// licenses, if you want to. This code is trivial anyway. Consider it an example on how to get the
// endian conversion functions on different platforms.
#pragma once
#if(defined(_WIN16) || defined(_WIN32) || defined(_WIN64))
#define __WINDOWS_ZZZ__
#endif
#if defined(__linux__) || defined(__CYGWIN__)
#include <endian.h>
#elif defined(__APPLE__)
#include <libkern/OSByteOrder.h>
#define htobe16(x) OSSwapHostToBigInt16(x)
#define htole16(x) OSSwapHostToLittleInt16(x)
#define be16toh(x) OSSwapBigToHostInt16(x)
#define le16toh(x) OSSwapLittleToHostInt16(x)
#define htobe32(x) OSSwapHostToBigInt32(x)
#define htole32(x) OSSwapHostToLittleInt32(x)
#define be32toh(x) OSSwapBigToHostInt32(x)
#define le32toh(x) OSSwapLittleToHostInt32(x)
#define htobe64(x) OSSwapHostToBigInt64(x)
#define htole64(x) OSSwapHostToLittleInt64(x)
#define be64toh(x) OSSwapBigToHostInt64(x)
#define le64toh(x) OSSwapLittleToHostInt64(x)
#define __BYTE_ORDER BYTE_ORDER
#define __BIG_ENDIAN BIG_ENDIAN
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#define __PDP_ENDIAN PDP_ENDIAN
#elif defined(__OpenBSD__)
#include <sys/endian.h>
#elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
#include <sys/endian.h>
#define be16toh(x) betoh16(x)
#define le16toh(x) letoh16(x)
#define be32toh(x) betoh32(x)
#define le32toh(x) letoh32(x)
#define be64toh(x) betoh64(x)
#define le64toh(x) letoh64(x)
#elif defined(__WINDOWS_ZZZ__)
#include <winsock2.h>
/*# include <sys/param.h>*/
#if BYTE_ORDER == LITTLE_ENDIAN
#define htobe16(x) htons(x)
#define htole16(x) (x)
#define be16toh(x) ntohs(x)
#define le16toh(x) (x)
#define htobe32(x) htonl(x)
#define htole32(x) (x)
#define be32toh(x) ntohl(x)
#define le32toh(x) (x)
#define htobe64(x) htonll(x)
#define htole64(x) (x)
#define be64toh(x) ntohll(x)
#define le64toh(x) (x)
#elif BYTE_ORDER == BIG_ENDIAN
/* that would be xbox 360 */
#define htobe16(x) (x)
#define htole16(x) __builtin_bswap16(x)
#define be16toh(x) (x)
#define le16toh(x) __builtin_bswap16(x)
#define htobe32(x) (x)
#define htole32(x) __builtin_bswap32(x)
#define be32toh(x) (x)
#define le32toh(x) __builtin_bswap32(x)
#define htobe64(x) (x)
#define htole64(x) __builtin_bswap64(x)
#define be64toh(x) (x)
#define le64toh(x) __builtin_bswap64(x)
#else
#error byte order not supported
#endif
#define __BYTE_ORDER BYTE_ORDER
#define __BIG_ENDIAN BIG_ENDIAN
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#define __PDP_ENDIAN PDP_ENDIAN
#else
#error platform not supported
#endif