(x^0x1)! = What does 0 do?

From the source code below, What does x^0x1 do? What rules do I not know?

if( 0 != ( x ^ 0x1 ) )
    encode( x, m );

2022-09-22 12:54

1 Answers

0x1 means hex 1.

If you look at the truth table of the XOR operation, alt text

You can see that xor 1 returns true if x is 0, and false if x is 1.

In other words, (x^0x1) checks whether x is 0 or not In other words, (x^0x1) = (x!=1).

You have to see the whole code It seems like a difficult code on purpose.

2022-09-22 12:54

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