Torture tests: what do they mean?

[HP67]

The TI is not carrying 16 digits. I don't know about Casio. It would seem their algorithms make more difference than the number of digits. Dieter explained how less digits can sometimes appear to give the correct answer. Maybe somebody who knows more about the specific models you mention can explain it to us. Anyway, you said you want the correct answer, and we all agree on the value of that. I am only saying the war on precision is a war that we can't win. We have to fight the battle from the standpoint of smarter algorithms.

On the 50g we do get the correct answer to both problems, exactly as you entered them. I think the situation is not so bad