HP-15C LE: Error with i ^ -i

[BuSchu]

Since one week I'm a proud owner of a HP-15C LE!

I discovered an error in computing of complex numbers not found in the simulator on Windows: If I try to compute i ^ -i I get Error 4.
What does the original HP-15C do with this task? Does it compute the correct value e ^ (pi / 2)?

Regards
Burkhard

[Thomas Klemm]

Do you happen to have USER activated?

Cheers
Thomas

[Mark Hardman]

(08-15-2014 08:19 PM)BuSchu Wrote:  Since one week I'm a proud owner of a HP-15C LE!

I discovered an error in computing of complex numbers not found in the simulator on Windows: If I try to compute i ^ -i I get Error 4.
What does the original HP-15C do with this task? Does it compute the correct value e ^ (pi / 2)?

Regards
Burkhard

[ETA: See my correction below.]

On the original 15C, I get 1,0 after a short pause. I immediately get 1,0 on the 15C LE.

[Thomas Klemm]

(08-15-2014 08:39 PM)Mark Hardman Wrote:  On the original 15C, I get 1,0 after a short pause.

Using the Nonpareil emulator I get 4.8105. Which appears to be the correct answer.

[Mark Hardman]

(08-15-2014 08:52 PM)Thomas Klemm Wrote:  

(08-15-2014 08:39 PM)Mark Hardman Wrote:  On the original 15C, I get 1,0 after a short pause.

Using the Nonpareil emulator I get 4.8105. Which appears to be the correct answer.

Ugh. Forgot to SF 8.

On both the original 15C and 15C LE the answer is 4.8105.

You are right. It is most likely that the OP was in User mode trying to execute a non-existent LBL D.

[BuSchu]

(08-15-2014 09:07 PM)Mark Hardman Wrote:  

(08-15-2014 08:52 PM)Thomas Klemm Wrote:  Using the Nonpareil emulator I get 4.8105. Which appears to be the correct answer.

Ugh. Forgot to SF 8.

On both the original 15C and 15C LE the answer is 4.8105.

You are right. It is most likely that the OP was in User mode trying to execute a non-existent LBL D.

Yes you are right! It was the User mode! Thank's!

Regards
Burkhard