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portable_endian.h
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/*
* Thanks to Mathias Panzenböck aka panzi
* https://gist.github.com/panzi/6856583
*/
#ifndef PORTABLE_ENDIAN_H__
#define PORTABLE_ENDIAN_H__
#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__)
# define __WINDOWS__
#endif
#if defined(__linux__) || defined(__CYGWIN__)
# include <endian.h>
#elif defined(__APPLE__)
# include <libkern/OSByteOrder.h>
# define htobe16 OSSwapHostToBigInt16
# define htole16 OSSwapHostToLittleInt16
# define be16toh OSSwapBigToHostInt16
# define le16toh OSSwapLittleToHostInt16
# define htobe32 OSSwapHostToBigInt32
# define htole32 OSSwapHostToLittleInt32
# define be32toh OSSwapBigToHostInt32
# define le32toh OSSwapLittleToHostInt32
# define htobe64 OSSwapHostToBigInt64
# define htole64 OSSwapHostToLittleInt64
# define be64toh OSSwapBigToHostInt64
# define le64toh OSSwapLittleToHostInt64
# 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 betoh16
# define le16toh letoh16
# define be32toh betoh32
# define le32toh letoh32
# define be64toh betoh64
# define le64toh letoh64
#elif defined(__WINDOWS__)
# include <winsock2.h>
# if BYTE_ORDER == LITTLE_ENDIAN
# define htobe16 htons
# define htole16(x) (x)
# define be16toh ntohs
# define le16toh(x) (x)
# define htobe32 htonl
# define htole32(x) (x)
# define be32toh ntohl
# define le32toh(x) (x)
# define htobe64 htonll
# define htole64(x) (x)
# define be64toh ntohll
# 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
#elif defined(__QNXNTO__)
# include <gulliver.h>
# define htobe16 ENDIAN_BE16
# define htole16 ENDIAN_LE16
# define htobe32 ENDIAN_BE32
# define htole32 ENDIAN_LE32
# define htobe64 ENDIAN_BE64
# define htole64 ENDIAN_LE64
#elif defined (__vxworks)
# include <arch/arm/vxbAccessArchLib.h>
#else
# error platform not supported
#endif
#endif //#ifndef PORTABLE_ENDIAN_H__