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A comment on 2-in-1 calculator app adds up to surprise hit for retired engineer. Parent comment

Re:2-in-1 calculator app adds up to surprise hit for retired... by deepspace on Monday September 19, 2022 @06:48PM (#32905211)
I was thinking the same thing while reading the article. I have been using RPN calculators for 40 years, and it has become second nature to manipulate the stack to have two calculations going at the same time, and then merging them, if needed.
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Re:2-in-1 calculator app adds up to surprise hit for retired... by bollu on Tuesday September 20, 2022 @07:29AM (#32910314)
What's the RPN based calculator you use on your terminal? I'd love to learn!
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Re:2-in-1 calculator app adds up to surprise hit for retired... by deepspace on Tuesday September 20, 2022 @12:12PM (#32913797)
To be honest, I mostly use a physical calculator (Swissmicros DM41L, which is an HP41CX clone). Second choice is the i41CX+ app on my phone. The HP41 keyboard and operational patterns were etched into my brain at university, since my first engineering calculator was an HP41C.

I have used rpncalc and T_REX (https://isene.org/2021/02/T-REX.html) in the terminal, dc or gforth in a pinch.

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Re:2-in-1 calculator app adds up to surprise hit for retired... by dr-neptune on Tuesday September 20, 2022 @09:02AM (#32911068)
Not sure what the parent uses, but emacs has calc, which is a RPN calculator with lots of features (including history and intermediate results) and can be used in the terminal
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Re:2-in-1 calculator app adds up to surprise hit for retired... by self on Tuesday September 20, 2022 @08:21AM (#32910694)
dc, perhaps.
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