Subject:
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Re: bitwise manipulations in C
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 6 Aug 2004 22:08:21 GMT
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Original-From:
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Steve Baker <sjbaker1@{avoidspam}airmail.net>
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Viewed:
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829 times
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scott davis wrote:
> Can anybody tell me about bitwise manipulations or point me to a site
> that explains what it is,
There really isn't a lot to tell.
All integers (short's, chars) in C are considered as a bunch of bits.
You can use the '&', '|', '^', '~', '<<' and '>>' operators to AND,
OR, XOR, INVERT, Up-shift and Down-shift all of the bits at once.
> what its used for,
All sorts of things - you might have a lot of single bit variables
that you'd like to pack together into a single integer - or you might
be working with graphics and have 16 bit colours comprised of 5 bits of
Red, 6 bits of Green and 5 bits of blue packed into a single 16 bit number.
There is no one particular use.
> and how to use it?
Those bitwise operators work just like any other integer math operator,
it's just arithmetic.
---------------------------- Steve Baker -------------------------
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Message is in Reply To:
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| Hi, Can anybody tell me about bitwise manipulations or point me to a site that explains what it is, what its used for, and how to use it? thanks, Scott ___...___ Express yourself instantly with MSN Messenger! Download today - it's FREE! (URL) (20 years ago, 6-Aug-04, to lugnet.robotics)
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