New Free HP 15C Simulator

[ThomasF]

(04-13-2023 04:07 AM)Craig Bladow Wrote:  It appears that storing 0.999 in a register, say 0, and then executing ISG 0, results in 99.999 instead of 1.999. But only in Chrome!

Yes, same in Chrome on Linux or Android.

Code:

0.999
STO 0
DSE 0
RCL 0 --> -99.9990

Actually the value left in reg 0 is -99.99899000

Probably some kind of overflow when extracting yy from the nnnnn.xxxyy value in the register.
RCL 0 should return -1.999000000 in reg 0.
nnnnn = 0, xxx = 999, yy = 0 -> 1 which should result in nnnnn = -1, xxx = 999 and yy = 0
But instead we get nnnnn = -99 (0-99), xxx = 998 and y = 99 (the xxx and yy should not change by the instruction).

But overall - a very nice simulator!

Cheers,
Thomas