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30 lines
732 B
Nim
30 lines
732 B
Nim
discard """
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output: '''
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@[48, 57]
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'''
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"""
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# bug #7238
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type ByteArrayBE*[N: static[int]] = array[N, byte]
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## A byte array that stores bytes in big-endian order
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proc toByteArrayBE*[T: SomeInteger](num: T): ByteArrayBE[sizeof(T)]=
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## Convert an integer (in native host endianness) to a big-endian byte array
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## Notice the result type
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const N = T.sizeof
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for i in 0 ..< N:
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result[i] = byte((num shr ((N-1-i) * 8)) and high(int8))
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let a = 12345.toByteArrayBE
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echo a[^2 .. ^1] # to make it work on both 32-bit and 64-bit
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#---------------------------------------------------------------------
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type
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Payload = object
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something: int
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vals: UncheckedArray[int]
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static:
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doAssert(compiles(offsetOf(Payload, vals)))
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