How do your print decimal form with more than 6 decimals? about rationals HOT 3 CLOSED

No problem, glad to have helped you! :-)

from rationals.

First of all, if you use the tolerance of 0.000000000001, the "Best Ask" 0.0001717 gets parsed as 152/885265 (which is approximately 0.0001716999994), not as 1717/10000000. If you want it to be parsed as 1717/10000000, don't use the tolerance or set it to 0.

However, I think your issue is actually happening during formatting. You're using the %f placeholder, which is for floats. For decimals, you should be using the %M formatting placeholder.

from rationals.

Hey that was it! changing "%f" to "%M" fixed it.
(I'm newish to F#, sorry!)

Thanks!

(But also, I was just pasting what the printfn gave me, I wasn't trying to say the fractions were wrong or anything)

from rationals.