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@@ -43,41 +43,73 @@
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#endif
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/* Endianness */
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-#if defined(__linux__) || defined(__APPLE__)
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-# ifndef __QNX__
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-# if defined(__APPLE__) || defined(__MACH__)
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-# include <machine/endian.h>
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-# else
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-# include <endian.h>
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-# endif
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-# endif
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-# if ( __BYTE_ORDER != __LITTLE_ENDIAN )
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-# define UA_NON_LITTLEENDIAN_ARCHITECTURE
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-# endif
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-#elif _WIN32
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+// UA_NON_LITTLEENDIAN_ARCHITECTURE disables memcpying integer arrays directly
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+// onto the message buffer. UA_MIXED_ENDIAN enables special encoding for floats
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+// and doubles. Otherwise, they are endianness-switched similar to integers.
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+
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+#if defined(__LITTLE_ENDIAN__) || defined(_WIN32) || (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
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+/* little-endian is the default assumption */
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# define htole16(x) (x)
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# define htole32(x) (x)
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# define htole64(x) (x)
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# define le16toh(x) (x)
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# define le32toh(x) (x)
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# define le64toh(x) (x)
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+#else
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+# if defined(__linux__)
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+# include <endian.h>
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+# elif defined(__OpenBSD__)
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+# include <sys/endian.h>
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+# elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
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+# include <sys/endian.h>
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+ /* the htole functions are defined correctly */
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+# define le16toh(x) letoh16(x)
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+# define le32toh(x) letoh32(x)
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+# define le64toh(x) letoh64(x)
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+# elif defined(__APPLE__)
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+# include <libkern/OSByteOrder.h>
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+# define htole16(x) OSSwapHostToLittleInt16(x)
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+# define htole32(x) OSSwapHostToLittleInt32(x)
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+# define htole64(x) OSSwapHostToLittleInt64(x)
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+# define le16toh(x) OSSwapLittleToHostInt16(x)
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+# define le32toh(x) OSSwapLittleToHostInt32(x)
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+# define le64toh(x) OSSwapLittleToHostInt64(x)
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+# define __BYTE_ORDER BYTE_ORDER
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+# elif defined(__QNX__) || defined(__QNXNTO__)
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+# include <gulliver.h>
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+# if defined(__LITTLEENDIAN__)
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+# define __BYTE_ORDER __LITTLE_ENDIAN
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+# else
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+# define __BYTE_ORDER NON_LITTLE_ENDIAN
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+# endif
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+# define htole16(x) ENDIAN_LE16(x)
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+# define htole32(x) ENDIAN_LE32(x)
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+# define htole64(x) ENDIAN_LE64(x)
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+# define le16toh(x) ENDIAN_LE16(x)
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+# define le32toh(x) ENDIAN_LE32(x)
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+# define le64toh(x) ENDIAN_LE64(x)
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+# endif
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+# if ( __BYTE_ORDER != __LITTLE_ENDIAN )
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+# define UA_NON_LITTLEENDIAN_ARCHITECTURE
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+# endif
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#endif
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-/* Force non-little endian manually by setting the following. */
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-// #define UA_NON_LITTLEENDIAN_ARCHITECTURE
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-// #define htole16(x) {...}(x)
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-// #define htole32(x) {...}(x)
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-// #define htole64(x) {...}(x)
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-// #define le16toh(x) {...}(x)
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-// #define le32toh(x) {...}(x)
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-// #define le64toh(x) {...}(x)
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-
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-/* Mixed Endian */
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+/* Mixed Endian Example */
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#ifdef __ARM_ARCH_4T__
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# define UA_MIXED_ENDIAN
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# define UA_NON_LITTLEENDIAN_ARCHITECTURE
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#endif
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+/* Manually override */
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+// If required, manually define UA_NON_LITTLEENDIAN_ARCHITECTURE and
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+// UA_MIXED_ENDIAN, as well as the htole / letoh functions here. Even better,
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+// post an issue on github or the mailing list, so we can include the
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+// architecture in the standard release.
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+
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+#ifndef htole16
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+# error The endianness of the architecture not known
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+#endif
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+
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/* Inline Functions */
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#ifdef _MSC_VER
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# define UA_INLINE __inline
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Julius Pfrommer