gmp/antihydra.c (source code)

= gmp/antihydra.c
{file}
{tag=GMP example}

Also posted at:
* https://wiki.bbchallenge.org/w/index.php?title=Antihydra&oldid=958 But <deletionism on Wikipedia>[obviously it got deleted], not even a tiny shitpage maintained by 5 people is immune to <deletionism>
* https://cstheory.stackexchange.com/questions/20978/what-is-the-smallest-turing-machine-where-it-is-unknown-if-it-halts-or-not/53326#53326
* https://cs.stackexchange.com/questions/59344/what-are-very-short-programs-with-unknown-halting-status/162108#162108