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@@ -0,0 +1,40 @@
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+#ifndef __endian_compat_h
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+#define __endian_compat_h
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+
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+#if defined(__linux__) || defined(__CYGWIN__)
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+#include <byteswap.h>
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+#include_next <endian.h>
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+#elif defined(__APPLE__)
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+#include <machine/endian.h>
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+#include <machine/byte_order.h>
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+#define bswap_16(x) NXSwapShort(x)
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+#define bswap_32(x) NXSwapInt(x)
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+#define bswap_64(x) NXSwapLongLong(x)
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+#elif defined(__FreeBSD__)
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+#include <sys/endian.h>
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+#define bswap_16(x) bswap16(x)
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+#define bswap_32(x) bswap32(x)
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+#define bswap_64(x) bswap64(x)
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+#elif defined(__OpenBSD__)
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+#include <sys/types.h>
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+#define bswap_16(x) __swap16(x)
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+#define bswap_32(x) __swap32(x)
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+#define bswap_64(x) __swap64(x)
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+#else
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+#include <machine/endian.h>
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+#define bswap_16(x) swap16(x)
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+#define bswap_32(x) swap32(x)
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+#define bswap_64(x) swap64(x)
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+#endif
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+
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+#ifndef __BYTE_ORDER
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+#define __BYTE_ORDER BYTE_ORDER
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+#endif
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+#ifndef __BIG_ENDIAN
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+#define __BIG_ENDIAN BIG_ENDIAN
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+#endif
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+#ifndef __LITTLE_ENDIAN
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+#define __LITTLE_ENDIAN LITTLE_ENDIAN
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+#endif
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+
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+#endif
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