On Sat, 1 Jun 2024 12:48:07 -0700 (PDT)
Jeremy Drake <wrote:
> On Sat, 1 Jun 2024, Takashi Yano wrote:
>
> > + const int destroyed = INT_MIN >> 1; /* 0b1100000000000000 */
>
> I thought whether or not right shifting a negative number sign-extends was
> undefined in the C/C++ standards?
It seems that it's implementation-defined till C++17 and arithmetic
shift since C++20.
gcc defines:
"Signed ‘>>’ acts on negative numbers by sign extension."
Therefore, this works as intended. However, relying on implementation-defined
behavior may not be certainly a good idea.
--
Takashi Yano <takashi.y...@nifty.ne.jp>
