You should defer calculations of sqrt as late as you can (not do it right away), trying to return as early as you can, and considering various edge cases.

So simple!!

I agree. My comment is from three years ago, I don't even remember this kata. Looks like I let a bit of frustration get the best of me.

Rounding is ( almost ) never the appropriate solution. If something's wrong, provide the problem, not the solution.

Ah, I didn't see that - it's annoying that it's still unfixed after so long

I added = 0 to the equation

added in JavaScript. already existing in Haskell

fixed

isnt this a duplicate of that issue ?

I don't know how this can be wrong - it says it's expecting exactly what I'm returning!

Falsifiable (after 2 tests and 6 shrinks):
  1.0e-2
  0.0
  0.0
expected: Single (-0.0)
 but got: Single (-0.0)

fixed

of course you're not, just you didn't face these type of things before.

yep, in youre case find= "" and function of replce = "" as well.