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π in Tcl

I think I'm pretty much doing pi approximations in every language now, so, here it is in Tcl!

The issue with NASM has been fixed, but I still need to figure out float addition, subtraction, multiplication, and division before the NASM approximation will be ready.

Credit to NoelBryan, TheForArkLD , @Warhawk947 (personal request for the ping), and LizFoster (the @ is removed so they don't get annoying pings every time I post) for inspiring these approximations. Most of these use the Nilakantha Series, although I also use the arctangent method (multiplying the radian arctangent of 1 by 4 to get pi and getting the arctangent with an infinite series) in three of them (Python, Node, and C).

I don't know currently which one is next. If you have any suggestions, please let me know! I would prefer to save esolangs for last. Some examples for ideas for the next ones are like Quil, OCaml, etc.

By the way, I'm starting to run out of languages, so please suggest any you would like to see me do. There are now no (or at least very few) official languages left other than esolangs, but there are some other languages (like OCaml, Quil, etc.) that can be found using the method in my tutorial at https://repl.it/talk/learn/How-to-Get-a-List-of-All-Replit-Langauges/34411. Though, I am saving esolangs for last (or close to last). After I finish the approximations using the Nilakantha Series, I will go through all of the languages again and do another algorithm (I'm thinking either trapezoidal sums or Monte Carlo). I will also then make a tutorial on transpiling programming languages.

List of all other languages on Repl.it that I have not done that I plan to at least eventually do:

BrainF - Esolang
Emoticon - Esolang
Bloop - Esolang
Unlambda - Esolang
Quil - Quantum Instruction Language
Reason - New syntax of OCaml
TestJ
Scala
NASM - Assembly; still working on it

List of languages that I will not do:

BASIC - Already did QBasic and there is not a large enough difference to make me decide to do BASIC as well.
Roy - There is not enough documentation online to do Roy. (I can find pretty much nothing)
Static - Static does nothing... It is just a makefile and it does nothing when you run it.
Flow - JS type checker which seems to not actually work
Deno - Alternative to Node, but runs exactly as TypeScript repls do
WASM - WebAssembly; Doesn't seem to work on Repl.it and isn't even meant to be programmed in, just compiled into.
OCaml - Doesn't work on Repl.it

hotnewtop
theangryepicbanana (1689)

Ya know you coulda done

``puts "pi = [expr \$p]"``

``puts [concat "pi = " [expr \$p]]``
@theangryepicbanana I remembered seeing something like that in the documentation, but forgot exactly what it said at first or where in the documentation it was, so I just went ahead and used the `concat` function. I just updated it.