Bitwise Operators: Difference between revisions
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→XOR: fixed formatting inconsistency
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* A bit <code>XOR</code>'d with 1 will flip. A bit <code>XOR</code>'d with zero won't change.
* A bitwise <code>NOT</code> is the same as <code>XOR -1</code>.
* <code>A ^ A = 0</code>. Furthermore, if <code>A ^ B = 0</code>, then <code>A = B</code>.
* If <code>((A ^ B) & C) = 0</code>, then A and B both share the bits of C in common.
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==NOT==
A bitwise <code>NOT</code>, or <code>~</code> takes one number as an argument and flips all its bits. This has its uses, especially when reading video game controllers, but is a little more limited than the others.
Among <code>AND</code>, <code>OR</code>, <code>XOR</code>, and <code>NOT</code>, only <code>XOR</code> and <code>NOT</code> are reversible.
==Citations==
#[[http://www.6502.org/tutorials/compare_beyond.html Beyond 8-Bit Unsigned Comparisons by Bruce Clark]]
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