stack lift and change sign

[Katie Wasserman]

(08-10-2014 12:44 PM)Thomas Klemm Wrote:  

(08-10-2014 12:14 PM)Thomas Radtke Wrote:  I'd call this inconsistent behaviour of the 15C a bug.

It's in the 34C as well. What astonishes me is that it was fixed in the 41C but is found in the Voyagers. Yet it is correct in the 12C.

It's correct on the 10C, broken on the 11C and correct on the 16C in integer mode but not in floating point mode. It's correct on the 32sii, broken on the 12C platinum 25th AE. I'm don't feel like spending the next hour testing more calculators, clearly there's not a point in time when this changed, rather something that was never tested nor thought about much.

The fact that it depends on the mode of the 16C I find particularly disturbing. This was an extremely carefully engineered calculator. To me this means that one should never count on the stack lift working (or not) after a CHS.