Challenge: Generate a 64 in the display (RPN)

[Guenter Schink]

(09-04-2020 09:56 AM)EdS2 Wrote:  Some brilliant and amusing solutions, but for me Didier(*) wins: the first two calculators I reached for were the HP-21 and the HP-35. No pi, no int, no factorial, no temperature conversion, no grad, no strings, no 12x, ...

(*) Or maybe Guenter, or Craig, ...

(Of course, of course, of course, the exact meaning of 'classic' would have some bearing, so that's just my observation.)

Ok: should work on any scientific RPN. NO cheating

PHP Code:

1 CLX
2 e^x
3 Enter
4 +
5 x^2
6 Enter
7 x^2
8 * 


Günter