// "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. #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__) || defined(__GNU__) || defined(__EMSCRIPTEN__) # include #elif defined(__APPLE__) # include # 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 # define __BYTE_ORDER BYTE_ORDER # define __BIG_ENDIAN BIG_ENDIAN # define __LITTLE_ENDIAN LITTLE_ENDIAN # define __PDP_ENDIAN PDP_ENDIAN #elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__) # include # 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__) # if defined(_MSC_VER) && !defined(__clang__) # include # define B_SWAP_16(x) _byteswap_ushort(x) # define B_SWAP_32(x) _byteswap_ulong(x) # define B_SWAP_64(x) _byteswap_uint64(x) # else # define B_SWAP_16(x) __builtin_bswap16(x) # define B_SWAP_32(x) __builtin_bswap32(x) # define B_SWAP_64(x) __builtin_bswap64(x) # endif # if defined(__MINGW32__) || defined(HAVE_SYS_PARAM_H) # include # endif # ifndef BIG_ENDIAN # ifdef __BIG_ENDIAN # define BIG_ENDIAN __BIG_ENDIAN # elif defined(__ORDER_BIG_ENDIAN__) # define BIG_ENDIAN __ORDER_BIG_ENDIAN__ # else # define BIG_ENDIAN 4321 # endif # endif # ifndef LITTLE_ENDIAN # ifdef __LITTLE_ENDIAN # define LITTLE_ENDIAN __LITTLE_ENDIAN # elif defined(__ORDER_LITTLE_ENDIAN__) # define LITTLE_ENDIAN __ORDER_LITTLE_ENDIAN__ # else # define LITTLE_ENDIAN 1234 # endif # endif # ifndef BYTE_ORDER # ifdef __BYTE_ORDER # define BYTE_ORDER __BYTE_ORDER # elif defined(__BYTE_ORDER__) # define BYTE_ORDER __BYTE_ORDER__ # else /* assume LE on Windows if nothing was defined */ # define BYTE_ORDER LITTLE_ENDIAN # endif # endif # if BYTE_ORDER == LITTLE_ENDIAN # define htobe16(x) B_SWAP_16(x) # define htole16(x) (x) # define be16toh(x) B_SWAP_16(x) # define le16toh(x) (x) # define htobe32(x) B_SWAP_32(x) # define htole32(x) (x) # define be32toh(x) B_SWAP_32(x) # define le32toh(x) (x) # define htobe64(x) B_SWAP_64(x) # define htole64(x) (x) # define be64toh(x) B_SWAP_64(x) # define le64toh(x) (x) # elif BYTE_ORDER == BIG_ENDIAN # define htobe16(x) (x) # define htole16(x) B_SWAP_16(x) # define be16toh(x) (x) # define le16toh(x) B_SWAP_16(x) # define htobe32(x) (x) # define htole32(x) B_SWAP_32(x) # define be32toh(x) (x) # define le32toh(x) B_SWAP_32(x) # define htobe64(x) (x) # define htole64(x) B_SWAP_64(x) # define be64toh(x) (x) # define le64toh(x) B_SWAP_64(x) # else # error byte order not supported # endif #elif defined(__QNXNTO__) # include # define __LITTLE_ENDIAN 1234 # define __BIG_ENDIAN 4321 # define __PDP_ENDIAN 3412 # if defined(__BIGENDIAN__) # define __BYTE_ORDER __BIG_ENDIAN # define htobe16(x) (x) # define htobe32(x) (x) # define htobe64(x) (x) # define htole16(x) ENDIAN_SWAP16(x) # define htole32(x) ENDIAN_SWAP32(x) # define htole64(x) ENDIAN_SWAP64(x) # elif defined(__LITTLEENDIAN__) # define __BYTE_ORDER __LITTLE_ENDIAN # define htole16(x) (x) # define htole32(x) (x) # define htole64(x) (x) # define htobe16(x) ENDIAN_SWAP16(x) # define htobe32(x) ENDIAN_SWAP32(x) # define htobe64(x) ENDIAN_SWAP64(x) # else # error byte order not supported # endif # define be16toh(x) ENDIAN_BE16(x) # define be32toh(x) ENDIAN_BE32(x) # define be64toh(x) ENDIAN_BE64(x) # define le16toh(x) ENDIAN_LE16(x) # define le32toh(x) ENDIAN_LE32(x) # define le64toh(x) ENDIAN_LE64(x) #else # error platform not supported #endif #endif