haskell98-1.0.1.1: Compatibility with Haskell 98Source codeContentsIndex
Ratio
Synopsis
Ratio
Rational
%
numerator
denominator
approxRational :: RealFrac a => a -> a -> Rational
Documentation
Ratio
Rational
%
numerator
denominator
approxRational :: RealFrac a => a -> a -> RationalSource

approxRational, applied to two real fractional numbers x and epsilon, returns the simplest rational number within epsilon of x. A rational number y is said to be simpler than another y' if

Any real interval contains a unique simplest rational; in particular, note that 0/1 is the simplest rational of all.

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