Help needed with tomopy/s390x

Hi all,

I'm struggling with bug #1032045. I added autopkgtests to tomopy last 
month, but the test fails on s390x. I tried to reproduce the error, but 
I couldn't manage to get autopkgtest to run on zalenka.d.o; after a few 
calls for help on various channels, I got pointed at 
https://lists.debian.org/debian-s390/2021/12/msg00006.html and 
https://lists.debian.org/debian-s390/2021/12/msg00007.html by Helmut on IRC.

So here's my plea for help… I have no idea if the bug is related to 
floating-point arithmetic (rounding differences across libraries?) or 
endianness, but any pointer will be welcome. I will happily sponsor an 
upload or apply a patch :-)

Thanks in advance,

Roland.