How do you represent fraction in F# without the loss of precision?

What is best way to represent fractions in F#? Haskell and Rack开发者_StackOverflowet have convinient way to represent ratios. Is there a data type in F# to represent ratios?

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You can use the F# Powerpack which has a BigRational (arbitrary precision rational numbers) type:

let r = (1N/2N) * (1N/3N) // 1/6

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The BigRational type has F# support in Math.Net Numerics according to the updated F# PowerPack archive on GitHub README.