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/*
* Public domain
* endian.h compatibility shim
*/
#ifndef LIBCRYPTOCOMPAT_BYTE_ORDER_H_
#define LIBCRYPTOCOMPAT_BYTE_ORDER_H_
#if defined(_WIN32)
#define LITTLE_ENDIAN 1234
#define BIG_ENDIAN 4321
#define PDP_ENDIAN 3412
/*
* Use GCC compiler defines to determine endianness.
*/
#if defined(__BYTE_ORDER__)
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
#define BYTE_ORDER LITTLE_ENDIAN
#else
#define BYTE_ORDER BIG_ENDIAN
#endif
#endif
/*
* Use build system defines to determine endianness.
*/
#if !defined(BYTE_ORDER)
#if defined(HAVE_LITTLE_ENDIAN)
#define BYTE_ORDER LITTLE_ENDIAN
#elif defined(HAVE_BIG_ENDIAN)
#define BYTE_ORDER BIG_ENDIAN
#else
#error "Could not detect endianness."
#endif
#endif
#elif defined(HAVE_ENDIAN_H)
#include_next <endian.h>
#elif defined(HAVE_MACHINE_ENDIAN_H)
#include_next <machine/endian.h>
#elif defined(__sun) || defined(_AIX) || defined(__hpux)
#include <arpa/nameser_compat.h>
#include <sys/types.h>
#elif defined(__sgi)
#include <standards.h>
#include <sys/endian.h>
#endif
#ifndef __STRICT_ALIGNMENT
#define __STRICT_ALIGNMENT
#if defined(__i386) || defined(__i386__) || defined(__x86_64) || \
defined(__x86_64__) || defined(__s390__) || defined(__s390x__) || \
defined(__aarch64__) || \
((defined(__arm__) || defined(__arm)) && __ARM_ARCH >= 6)
#undef __STRICT_ALIGNMENT
#endif
#endif
#if defined(__APPLE__) && !defined(HAVE_ENDIAN_H)
#include <libkern/OSByteOrder.h>
#define be16toh(x) OSSwapBigToHostInt16((x))
#define htobe16(x) OSSwapHostToBigInt16((x))
#define le32toh(x) OSSwapLittleToHostInt32((x))
#define be32toh(x) OSSwapBigToHostInt32((x))
#define htole32(x) OSSwapHostToLittleInt32(x)
#define htobe32(x) OSSwapHostToBigInt32(x)
#define htole64(x) OSSwapHostToLittleInt64(x)
#define htobe64(x) OSSwapHostToBigInt64(x)
#define le64toh(x) OSSwapLittleToHostInt64(x)
#define be64toh(x) OSSwapBigToHostInt64(x)
#endif /* __APPLE__ && !HAVE_ENDIAN_H */
#if defined(_WIN32) && !defined(HAVE_ENDIAN_H)
#include <winsock2.h>
#define be16toh(x) ntohs((x))
#define htobe16(x) htons((x))
#define le32toh(x) (x)
#define be32toh(x) ntohl((x))
#define htole32(x) (x)
#define htobe32(x) ntohl((x))
#define be64toh(x) ntohll((x))
#if !defined(ntohll)
#define ntohll(x) \
((1 == htonl(1)) \
? (x) \
: ((uint64_t)ntohl((x)&0xFFFFFFFF) << 32) | ntohl((x) >> 32))
#endif
#if !defined(htonll)
#define htonll(x) \
((1 == ntohl(1)) \
? (x) \
: ((uint64_t)htonl((x)&0xFFFFFFFF) << 32) | htonl((x) >> 32))
#endif
#define htobe64(x) ntohll((x))
#endif /* _WIN32 && !HAVE_ENDIAN_H */
#ifdef __linux__
#if !defined(betoh16)
#define betoh16(x) be16toh(x)
#endif
#if !defined(betoh32)
#define betoh32(x) be32toh(x)
#endif
#if !defined(betoh64)
#define betoh64(x) be64toh(x)
#endif
#endif /* __linux__ */
#if defined(__FreeBSD__)
#if !defined(HAVE_ENDIAN_H)
#include <sys/endian.h>
#endif
#if !defined(betoh16)
#define betoh16(x) be16toh(x)
#endif
#if !defined(betoh32)
#define betoh32(x) be32toh(x)
#endif
#if !defined(betoh64)
#define betoh64(x) be64toh(x)
#endif
#endif
#if defined(__NetBSD__)
#if !defined(betoh16)
#define betoh16(x) be16toh(x)
#endif
#if !defined(betoh32)
#define betoh32(x) be32toh(x)
#endif
#if !defined(betoh64)
#define betoh64(x) be64toh(x)
#endif
#endif
#if defined(__sun)
#include <sys/byteorder.h>
#define be16toh(x) BE_16(x)
#define htobe16(x) BE_16(x)
#define le32toh(x) LE_32(x)
#define be32toh(x) BE_32(x)
#define htole32(x) LE_32(x)
#define htobe32(x) BE_32(x)
#define be64toh(x) BE_64(x)
#define htobe64(x) BE_64(x)
#endif
#endif
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