[Solved] How to define a `bc` function for later use?

ixtmixilix Asks: How to define a `bc` function for later use?
I’ve always found bc kind of mysterious and intriguing. It was one of the original Unix programs. And it’s a programming language unto itself. So I gladly take any chance I can find to use it.

Since bc doesn’t seem to include a factorial function, I want to define one like so:

define fact(x) {
  if (x>1) {
    return (x * fact(x-1))
  return (1)


But… I can’t then reuse that, can I?

I’d want to be able to do something like

me@home$ bc <<< "1/fact(937)"

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