undefined | Better HN

0 pointseinpoklum8d ago0 comments

> Unsigned ints have no “negativity” semantic.

They do. The code:

    unsigned x;
    unsigned y = -x;

is well-defined in C and C++. See this discussion on StackOverflow for spec text and reference:

https://stackoverflow.com/q/8026694/1593077

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throwaway8943458d ago

That’s not a negativity semantic, it’s the behavior of the “-“ operator. If you print y or compare it to zero you will see that the result remains positive. Unsigned integers by definition have no negative semantic, hence the name.

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throwaway8943458d ago

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