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Published on 2010-04-05T21:50:45Z
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I've decided to do it this way
But I'm stuck on the last point; how can I say that in a conditional loop?
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Hi every one.
I am new programmer in Obj-C and cocoa. Im a trying to write a framework which will be used to read a binary files (Flexible Image Transport System or FITS binary files, usually used by astronomers). The binary data, that I am interested to extract, can have various formats and I get…
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We have 2's complement for integers that allows us to perform operations without worrying about the sign. That is a big help at the implementation level.
Similarly we have so many floating point operations and yet we rely on sign and magnitude. What is the reason?
Why can't a 2's complement like…
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I want to multiply two numbers, and detect if there was an overflow. What is the simplest way to do that?
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I've decided to do it this way
flip numbers 0=1, 1=0
add 1 to LSB
if carry, loop until array[i]==0
But I'm stuck on the last point; how can I say that in a conditional loop?
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I have a control that has a byte array in it.
Every now and then there are two bytes that tell me some info about number of future items in the array.
So as an example I could have:
...
...
Item [4] = 7
Item [5] = 0
...
...
The value of this is clearly 7.
But what about this?
...
...
Item…
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