Calculator benchmark

[C.Ret]

(08-09-2021 08:14 PM)Claudio L. Wrote:  PS: I think this is an interesting benchmark, should probably be moved to the general forum.

I agree with you it is a good benchmark that qualify equally the calculator and the ingenuity of the drilled user !

Your method building up the two list in the stack really impress me, that’s shame that not "list arithmetic" exist on my HP-28S !

(08-11-2021 11:49 AM)Werner Wrote:  

Code:

RCL 0  ENTER  g X^2  +

is shorter than

Code:

RCL 0  g X^2  RCL+0

Good catch !

(08-11-2021 05:18 AM)Valentin Albillo Wrote:  Well, the HP-71B has it, called DISP$.

I have to admit that I have an hard time to adapt my code using the AREAD instruction to the HP-17B. I lost myself in many complicated detours and useless escape key sequences.
Finally, restarting from an empty scratchpad, I get something competitive :

HP-71B

Setup:

Code:

EDIT                                     2      Activate new 'workfile'
1 DISP A*A+A-LOG(B);LOG(B*B) [EndLine]  20      Don't have to type the DISP implicit display instruction,LOG( is [f][-].
KEY "(",'A=VAL(DISP$)@RUN':  [EndLine]  31      KEY is [f][I]and DISP$ is [f][J][←][g][4]
KEY ")",'B=VAL(DISP$)@RUN':             14      [g][CMDS] [→][→][→][→][→] [ ) ] [→][→][→][→] B [EndLine]

Total 69 keystrokes for the setup in a fresh workfile.

Note that I am not using the expected A and B keys, you will see why:

Data entry and results display:

Code:

f USER               2      Activate USER mode 
2.56 )  3.12 (       9      display first X and Y results for (3.12,2.56) on the same display. Note that starting with B entry avoïd any LN(0) error 
B/2 )                4      set B to 1.28 and display the two corresponding in one display. 
B/2 )                4      set B to .64 and display X & Y
2*A (                4      set A to 6.24 and display X & Y
2*A (                4      set A to 12.48 and display results
2*A (  B/2 )         8      set A to 24.96 and B to .32 and display result 
B/2 )                4      set B to .16 and display results
1.32 )               5      set B to 1.32 and display results
18.59 (              6      set A and display results
17.63 (              6      set A and display results
2.64 )               5      set B and display results
5.28 )               5      set B and display results

Total 66 keystrokes for computing the table

Score 135 keystrokes for the HP-71B
Not bad for the "Ugly Duckling" !