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- /* Compatibility shim for <endian.h>
- *
- * "License": Public Domain
- * "Original": https://gist.github.com/panzi/6856583
- *
- * 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.
- *
- * Modifications also in the Public Domain and dual licensed under BSD, MIT and
- * Apache licenses (using the terms outlined above):
- *
- * Copyright (C) 2016 Reece H. Dunn
- */
-
- #ifndef ENDIAN_H_COMPAT_SHIM
- #define ENDIAN_H_COMPAT_SHIM
- #pragma once
-
- #if __has_include_next(<endian.h>)
- # pragma GCC system_header // Silence "warning: #include_next is a GCC extension"
- # include_next <endian.h>
- #elif __has_include(<sys/endian.h>)
- # include <sys/endian.h>
- # if !defined(be16toh)
- # define be16toh(x) betoh16(x)
- # endif
- # if !defined(le16toh)
- # define le16toh(x) letoh16(x)
- # endif
- # if !defined(be32toh)
- # define be32toh(x) betoh32(x)
- # endif
- # if !defined(le32toh)
- # define le32toh(x) letoh32(x)
- # endif
- # if !defined(be64toh)
- # define be64toh(x) betoh64(x)
- # endif
- # if !defined(le64toh)
- # define le64toh(x) letoh64(x)
- # endif
- #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(_WIN16) || defined(_WIN32) || defined(_WIN64)
- # 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
- #elif defined(__sun) && defined(__SVR4) /* Solaris */
- # include <sys/byteorder.h>
-
- # define htobe16(x) BE_16(x)
- # define htole16(x) LE_16(x)
- # define be16toh(x) BE_16(x)
- # define le16toh(x) LE_16(x)
-
- # define htobe32(x) BE_32(x)
- # define htole32(x) LE_32(x)
- # define be32toh(x) BE_32(x)
- # define le32toh(x) LE_32(x)
-
- # define htobe64(x) BE_64(x)
- # define htole64(x) LE_64(x)
- # define be64toh(x) BE_64(x)
- # define le64toh(x) LE_64(x)
- #else
- # error platform not supported
- #endif
- #endif
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