Comment by rbanffy

I got some interesting results. MSX and Atari computed the results correctly. On the TRS-80 Model I, wrong results started on the 12th iteration. Apple IIe (AppleSoft), VIC-20 and PET started the wrong results on the 8th or so. This has to do with the internal representation of floating-point numbers, of course - the Apple II uses, IIRC, 5 bytes to represent a float while MSX uses, again, IIRC (it's been a long time) 8.