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3 posts
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Hi all, could anyone explain to me what bitwise is please? I have no idea what it is and I have searched online about it but can't find anything about it and I'm struggling to do the ALU part of the course without it! Thank you :)
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Administrator
2607 posts
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Bit-wise means one bit at a time. For example, bit-wise And means that each bit position in the operands is treated independently, i.e., like the And16 you built in chapter 1.
--Mark
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3 posts
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Thank you for your reply, I understand it a bit better now. I know it may be a silly question but why it is used?, I don't understand why
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566 posts
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A basic case is for boolean logic. Other cases include bitmasks and a variety of other "clever" use cases. Can you look online to discover more?
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566 posts
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In other words, bitwise negation is logical negation (!) while arithmetic negation is, well, arithmetic negation (-).
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3 posts
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thank you for replying! I don't get the difference between normal AND and bitwise AND?
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566 posts
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For Hack, you can think of them as being the same.
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Nov 05, 2014; 7:20pm
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