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50 lines
1.2 KiB
Nim
50 lines
1.2 KiB
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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# bug #11792
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type
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m256d {.importc: "__m256d", header: "immintrin.h".} = object
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MyKind = enum
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k1, k2, k3
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MyTypeObj = object
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kind: MyKind
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x: int
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amount: UncheckedArray[m256d]
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# The sizeof(MyTypeObj) is not equal to (sizeof(int) + sizeof(MyKind)) due to
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# alignment requirement of m256d, make sure Nim understands that
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doAssert(sizeof(MyTypeObj) > sizeof(int) + sizeof(MyKind))
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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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