/*!
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* \file portable_endian.h
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* \license https://creativecommons.org/publicdomain/zero/1.0/
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*
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* Original author:
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* - Mathias Panzenböck (https://gist.github.com/panzi/6856583)
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* Related resources:
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* - https://en.wikipedia.org/wiki/Endianness
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* - https://sourceforge.net/p/predef/wiki/Endianness/
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* - http://stackoverflow.com/questions/2100331/c-macro-definition-to-determine-big-endian-or-little-endian-machine
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*/
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#ifndef PORTABLE_ENDIAN_H
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#define PORTABLE_ENDIAN_H
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/* ************************************************************************** */
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#if defined(__linux__) || defined(__CYGWIN__)
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#include <endian.h>
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#elif defined(__APPLE__)
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#include <libkern/OSByteOrder.h>
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#define htobe16(x) OSSwapHostToBigInt16(x)
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#define htole16(x) OSSwapHostToLittleInt16(x)
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#define be16toh(x) OSSwapBigToHostInt16(x)
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#define le16toh(x) OSSwapLittleToHostInt16(x)
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#define htobe32(x) OSSwapHostToBigInt32(x)
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#define htole32(x) OSSwapHostToLittleInt32(x)
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#define be32toh(x) OSSwapBigToHostInt32(x)
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#define le32toh(x) OSSwapLittleToHostInt32(x)
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#define htobe64(x) OSSwapHostToBigInt64(x)
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#define htole64(x) OSSwapHostToLittleInt64(x)
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#define be64toh(x) OSSwapBigToHostInt64(x)
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#define le64toh(x) OSSwapLittleToHostInt64(x)
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#define __BYTE_ORDER BYTE_ORDER
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#define __BIG_ENDIAN BIG_ENDIAN
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#define __LITTLE_ENDIAN LITTLE_ENDIAN
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#define __PDP_ENDIAN PDP_ENDIAN
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#elif defined(__OpenBSD__) || defined(__FreeBSD__)
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#include <sys/endian.h>
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#elif defined(__NetBSD__) || defined(__DragonFly__)
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#include <sys/endian.h>
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#define be16toh(x) betoh16(x)
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#define le16toh(x) letoh16(x)
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#define be32toh(x) betoh32(x)
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#define le32toh(x) letoh32(x)
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#define be64toh(x) betoh64(x)
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#define le64toh(x) letoh64(x)
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#elif defined(__sun)
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#include <sys/byteorder.h>
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#define htobe16(x) BE_16(x)
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#define htole16(x) LE_16(x)
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#define be16toh(x) BE_IN16(x)
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#define le16toh(x) LE_IN16(x)
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#define htobe32(x) BE_32(x)
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#define htole32(x) LE_32(x)
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#define be32toh(x) BE_IN32(x)
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#define le32toh(x) LE_IN32(x)
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#define htobe64(x) BE_64(x)
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#define htole64(x) LE_64(x)
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#define be64toh(x) BE_IN64(x)
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#define le64toh(x) LE_IN64(x)
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#elif defined(_WIN16) || defined(_WIN32) || defined(_WIN64)
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#include <winsock2.h>
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#ifdef __MINGW32__
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#include <sys/param.h>
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#elif _MSC_VER
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// Windows doesn't provide any way to detect endianness through macros.
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// We force little endian because while there may be some NT kernel version
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// running on big endian (?), there is no known version of BE Windows...
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#define LITTLE_ENDIAN 1234
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#define BIG_ENDIAN 4321
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#define PDP_ENDIAN 3412
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#define BYTE_ORDER LITTLE_ENDIAN
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#endif
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#define htobe16(x) htons(x)
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#define htole16(x) (x)
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#define be16toh(x) ntohs(x)
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#define le16toh(x) (x)
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#define htobe32(x) htonl(x)
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#define htole32(x) (x)
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#define be32toh(x) ntohl(x)
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#define le32toh(x) (x)
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#define htobe64(x) htonll(x)
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#define htole64(x) (x)
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#define be64toh(x) ntohll(x)
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#define le64toh(x) (x)
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#define __BYTE_ORDER BYTE_ORDER
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#define __BIG_ENDIAN BIG_ENDIAN
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#define __LITTLE_ENDIAN LITTLE_ENDIAN
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#define __PDP_ENDIAN PDP_ENDIAN
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#else
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#error platform not supported
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#endif
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/* ************************************************************************** */
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#endif // PORTABLE_ENDIAN_H
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