math - What does the ^ (XOR) operator do? - Stack Overflow
2021年3月6日 · How XOR works with Negative Numbers : Since this question is also tagged as python, I will be answering it with that in mind. The XOR ( ^) is an logical operator that will return 1 when the bits are different and 0 elsewhere. A negative number is stored in binary as two's complement. In 2's complement, The leftmost bit position is reserved for ...
What does bitwise XOR (exclusive OR) mean? - Stack Overflow
2011年6月19日 · The definition of the XOR (exclusive OR) operator, over bits, is that: 0 XOR 0 = 0 0 XOR 1 = 1 1 XOR 0 = 1 1 XOR 1 = 0 One of the ways to imagine it, is to say that the "1" on the right side changes the bit from the left side, and 0 on the right side doesn't change the bit on the left side. However, XOR is commutative, so the same is true if ...
Logical XOR operator in C++? - Stack Overflow
XOR evaluation, as you understand, cannot be short-circuited since the result always depends on both operands. So 1 is out of question. But what about 2? If you don't care about 2, then with normalized (i.e. bool) values operator != does the job of XOR in terms of the result.
What does the ^ operator do in Java? - Stack Overflow
2010年1月2日 · It is the Bitwise xor operator in java which results 1 for different value of bit (ie 1 ^ 0 = 1) and 0 for same value of bit (ie 0 ^ 0 = 0) when a number is written in binary form. ex :- To use your example: The binary representation of 5 is 0101. The binary representation of 4 is 0100.
javascript - Why is there no logical XOR? - Stack Overflow
2010年12月27日 · But a "logical" xor operator (^^) would always have to evaluate both operands. This makes it different to the other "logical" operators which evaluate the second operand only if necessary. I think this is why there is no "logical" xor in Javascript, to avoid confusion.
How do you get the logical xor of two variables in Python?
2017年4月30日 · Use the bitwise xor operator (^ or operator.xor) For example, bool(a) ^ bool(b) When you convert the inputs to booleans, bitwise xor becomes logical xor. Note that the accepted answer is wrong:!= is not the same as xor in Python because of the subtlety of operator chaining. For instance, the xor of the three values below is wrong when using !=:
What situations are there where one might want to use the bitwise …
I think ATARI had a patent for creating a blinking cursor "anywhere on the screen" by doing XOR with the bit map. Similarly if you have a microcontroller that wants to create a blinking light, repeatedly doing state = state XOR 1 will cause the state to toggle. Finallly, there are many "bit twiddling hacks" that rely on the XOR operation.
python - What does the caret (^) operator do? - Stack Overflow
Side note, seeing as Python defines this as an xor operation and the method name has "xor" in it, I would consider it a poor design choice to make that method do something not related to xor like exponentiation. I think it's a good illustrative example of how it simply calls the __xor__ method, but to do that for real would be bad practice. –
java - What is the inverse function to XOR? - Stack Overflow
2013年1月11日 · There is XOR function in Java - a^b For example: 5^3 = 6 Can you tell me the inverse function? If I have 6 and 3 can I get range of numbers which include number 5?
bitwise operators - XOR from only OR and AND - Stack Overflow
2011年1月17日 · Best advice is to look up XOR in reference manuals and encyclopedia sites on the net and then write code or script which does the same as the description of what a XOR built-in function does and use your own return or status values. We can not tell you how to do that type of bit compares from within the software community.