Show HN: Shellmath: Floating-point arithmetic directly in bash

Re:Show HN: Shellmath: Floating-point arithmetic directly in... by JNRowe on Wednesday February 24, 2021 @02:34PM (#26254515)

This is awful¹, I love it!

Thumbing through the code made me wonder what the zsh(my normal shell) implementation feels like, and I think it is fair to say your code is easier to wrap your head around than the documentation for floats in zsh.

FWIW - and given that you've only shown Windows timings - on my Linux box hyperfine shows:

    Summary
      './faster_e_demo.sh 15' ran
        1.78 ± 0.16 times faster than './slower_e_demo.sh 15'

I expected the speeds to be closer because of the differences with subshells on Windows and Linux, but the distance still surprised me.

¹ https://en.m.wiktionary.org/wiki/contranym - choose one

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Re:Show HN: Shellmath: Floating-point arithmetic directly in... by clarity20 on Thursday February 25, 2021 @09:13AM (#26262894)

Thank you, I tried to make the code as readable as I could. And yes, since the *nix model for (sub)processes is cleaner than Cygwin-on-Windows it's kind of surprising that that gap is what it is.

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