fisher_exact_test code, public-domain ?

[Alex Mestiashvili <alex@biotec.tu-dresden.de>]

Hi All,

I am about to upload the new version of subread package, but not sure
what to do with a new file with unclear copyright.

I've already tried to contact both authors ( Kadosawa and Hopwood ) but
both emails don't exist anymore ..

Taking into account that the code is not too complicated, can I consider
it public-domain or just the same license as the source of subread ?

https://anonscm.debian.org/cgit/debian-med/subread.git/tree/src/test-fisher.c


Thanks,
Alex