35 lines
865 B
C
35 lines
865 B
C
#pragma once
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/* Portable be64toh() — big-endian to host byte order conversion. */
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#if defined(__linux__)
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# ifndef _DEFAULT_SOURCE
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# define _DEFAULT_SOURCE 1
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# endif
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# ifndef _BSD_SOURCE
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# define _BSD_SOURCE 1
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# endif
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# include <endian.h>
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# ifndef be64toh
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/* musl and some older glibc: fall back to builtin */
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# include <stdint.h>
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static inline uint64_t be64toh(uint64_t x) {
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# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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return __builtin_bswap64(x);
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# else
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return x;
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# endif
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}
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# endif /* be64toh */
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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 be64toh(x) OSSwapBigToHostInt64(x)
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#else
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# include <stdint.h>
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static inline uint64_t be64toh(uint64_t x) {
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# if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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return __builtin_bswap64(x);
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# else
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return x;
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# endif
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}
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#endif
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