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120 lines
3.2 KiB
C++
120 lines
3.2 KiB
C++
// (c) Mathias Panzenböck
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// http://github.com/panzi/mathfun/blob/master/examples/portable_endian.h
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//
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#pragma once
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#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__)
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# define __WINDOWS__
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#endif
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// use standard posix style headers for apple emscripten builds as well since emscripten sdk now ships its own
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// libc headers
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#if defined(__linux__) || defined(__CYGWIN__) || defined(__EMSCRIPTEN__)
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# include <endian.h>
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#elif defined(__APPLE__)
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# include <machine/endian.h>
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# include <libkern/OSByteOrder.h>
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# define htobe16 OSSwapHostToBigInt16
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# define htole16 OSSwapHostToLittleInt16
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# define be16toh OSSwapBigToHostInt16
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# define le16toh OSSwapLittleToHostInt16
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# define htobe32 OSSwapHostToBigInt32
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# define htole32 OSSwapHostToLittleInt32
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# define be32toh OSSwapBigToHostInt32
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# define le32toh OSSwapLittleToHostInt32
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# define htobe64 OSSwapHostToBigInt64
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# define htole64 OSSwapHostToLittleInt64
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# define be64toh OSSwapBigToHostInt64
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# define le64toh OSSwapLittleToHostInt64
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/**
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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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**/
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#elif defined(__OpenBSD__)|| defined(__FreeBSD__) || defined(__NetBSD__) || defined(__DragonFly__)
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# if defined __has_include && __has_include (<sys/endian.h>)
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# include <sys/endian.h>
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# elif defined __has_include && __has_include (<endian.h>)
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# include <endian.h>
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# else
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# define be16toh betoh16
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# define le16toh letoh16
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# define be32toh betoh32
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# define le32toh letoh32
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# define be64toh betoh64
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# define le64toh letoh64
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# endif
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#elif defined(__WINDOWS__)
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# include <winsock2.h>
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# if BYTE_ORDER == LITTLE_ENDIAN
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# define htobe16 htons
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# define htole16(x) (x)
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# define be16toh ntohs
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# define le16toh(x) (x)
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# define htobe32 htonl
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# define htole32(x) (x)
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# define be32toh ntohl
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# define le32toh(x) (x)
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# define htole64(x) (x)
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# define le64toh(x) (x)
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# ifndef __MINGW32__
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# define be64toh ntohll
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# define htobe64 htonll
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# else
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# define be64toh(x) ((((uint64_t)ntohl((x) & 0xFFFFFFFFUL)) << 32) | ntohl((uint32_t)((x) >> 32)))
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# define htobe64(x) ((((uint64_t)htonl((x) & 0xFFFFFFFFUL)) << 32) | htonl((uint32_t)((x) >> 32)))
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# endif
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# elif BYTE_ORDER == BIG_ENDIAN
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/* that would be xbox 360 */
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# define htobe16(x) (x)
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# define htole16(x) __builtin_bswap16(x)
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# define be16toh(x) (x)
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# define le16toh(x) __builtin_bswap16(x)
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# define htobe32(x) (x)
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# define htole32(x) __builtin_bswap32(x)
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# define be32toh(x) (x)
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# define le32toh(x) __builtin_bswap32(x)
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# define htobe64(x) (x)
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# define htole64(x) __builtin_bswap64(x)
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# define be64toh(x) (x)
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# define le64toh(x) __builtin_bswap64(x)
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# else
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# error byte order not supported
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# endif
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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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