|WP34s: number display and rounding|
Message #1 Posted by Dieter on 14 Oct 2011, 8:44 a.m.
In the olden days I also used a TI58 here and there. As on most TIs, its standard display format shows all digits, similar to the original HP35 or the later ALL setting, while most HPs used a fixed decimal format - FIX 2 on earlier machines and FIX 4 on later models.
But there was another difference. HPs machines, set to a FIX format, usually switch to scientific notation if the value is so small that if would round to zero. Enter Pi, and in FIX 4 you will get 3,1416. Divide this by 10000 and you'll see 0,0003. Divide again by 10 and you will get 3,1416 E-5. While TI's machines showed the same results in the first two cases, the last value was handled differently: it was simply displayed as zero (0,0000). In other words: the HP way was a switch to scientific notation while the TIs showed the result like the one you would have got after an additional RND (which returns zero in this case as well).
I think both ways of handling this are valid options. There are cases where I actually prefer the "round to zero" way. So I would like to ask two questions:
1. Do you consider an option or a flag useful that sets either the one or the other display rounding mode?
2. Especially for Pauli: if (!) this option is considered useful, is there a chance this may find its way into the 34s?