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How to reverse bitwise AND (&) in C?
If I am using bitwise AND
7758194 & 255 = 114
how could I get back 7758194, given the result 114?
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use XOR instead.............? – Mitch Wheat Aug 23 '12 at 13:33
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That's like asking "given half a phone number, how can I get the other half?" – harold Aug 23 '12 at 13:36
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The & operator, bitwise or not, is simply not reversible.
0 & 1 => 0
0 & 0 => 0
1 & 0 => 0
So you can't.
Denys Séguret
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You're welcome. I suggest you expose the real problem in another question. Maybe you need XOR as suggested by Mitch Wheat. – Denys Séguret Aug 23 '12 at 13:46