WP 34S and 31S bugs and fixes

[Bit]

(12-08-2014 06:25 PM)walter b Wrote:  Summarizing the status of the discussion:

We've to choose between the devil and the deep blue sea. If we want to stick to the documentation as is (as Nigel suggested with good reason), I pointed out two ways to go. Else the world is wide open but we'd either introduce new undocumented features or violate the docs.

d:-?

Once a conclusion has been reached, I'll create an implementation.

By the way, my personal preference is to eliminate surprises as such:

• Permit everything that can be stored, permit nothing that cannot be stored.
  Allow entering all numbers with any combination of decimal mark placement and exponent as long as they can be stored without overflow or loss of precision, but don't allow anything else. Pressing Enter after a number would thus never produce an infinity or domain error or fewer digits in the mantissa than entered.
• Instant error messages.
  Produce an error message immediately if the user tries to enter a digit (or change the sign) that would result in a number that can't be accepted according to the above, just like you get a "too long" error if you try to enter more than 12 digits. This implies that the exponent would not be shifted.