Pi Approximation Day

[Gerson W. Barbosa]

(07-23-2022 06:46 PM)Thomas Klemm Wrote:  Without recall-arithmetic it uses even fewer bytes:

Code:

00 { 27-Byte Prgm }
01▸LBL "?"
02 0
03▸LBL 00
04 RCL ST Y
05 ENTER
06 X↑2
07 +
08 ENTER
09 X↑2
10 ×
11 1/X
12 -
13 DSE ST Y
14 GTO 00
15 10
16 +
17 SQRT
18 END

Thanks. I tend to value least number of steps over least number of bytes on the HP-42S where memory is not a concern, but I’ve just noticed there’s no reason at all to use recall arithmetic in my step 05 above when a simple X↑2 instruction suffices.