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Why use bitwise OR / AND

Former Member over 10 years ago

I have been programming for over an year now. I still don't get why bitwise OR and AND operators are used. They seem to return random numbers.

What mathematical purpose do they have?

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Robert Peter Oakes over 10 years ago +1

It can seem this way if your looking at the values as decimal or hex These operations are a binary operation so it works on ones and zeroes For example the decimal number 15 is 0F in hex or 00001111 in…

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D_Hersey over 10 years ago

Sometimes one operand word is data and the other is a mask. Let's say that three separate binary events in I/O land are required to draw a conclusion. By using the mask we can check the conditions in parallel, rather than sequentially. Saves time.
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D_Hersey over 10 years ago

Sometimes one operand word is data and the other is a mask. Let's say that three separate binary events in I/O land are required to draw a conclusion. By using the mask we can check the conditions in parallel, rather than sequentially. Saves time.
Easier to modify.
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