50g - Exponent of zero

[Claudio L.]

(09-27-2017 05:28 PM)Arno K Wrote:  0 has no normalized exponential form of type a.b*10^c with at least one digit before the fraction mark.
Arno

So shouldn't it be "Undefined" instead of "Infinite result"?

Maybe I shouldn't have used the "normalized" word, "standarized" is more appropriate.
Zero is typically represented with 0 mantissa and 0 exponent, so it would make sense for XPON to return 0.
For continuity of the function perhaps -Inf makes sense, but then XPON is limited to the actual floating point format that's being stored, in the HP50g XPON would jump from -499 to -Inf anyway, there's no continuity so why bother with returning "Infinite result".