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Thread: Bit operands - why???

  1. Jul 12th, 2007, 06:15 AM #1
    salvor_hardin
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    Angry Bit operands - why???

    Code:
    x=37 , console.write(not x) = -38
    Why?? If "not" operand is reversing bits from 0 to 1 and other way around how can result be -38?? 0001 should be 1110, or I'm so wrong?
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  2. Jul 12th, 2007, 06:21 AM #2
    Merrion
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    Re: Bit operands - why???

    Negative numbers are represented using Twos complement
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  3. Jul 12th, 2007, 07:01 AM #3
    penagate
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    Re: Bit operands - why???

    It depends what data type you use. On the x86 platform, you can't store a 4-bit number; the smallest data type is a byte (8 bits).

    ~00000001 in a byte is 11111110, which in an unsigned byte is 254.
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