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Interval refinement on doubles / floats allows NaNs. #620

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ChernikovP opened this issue Mar 11, 2019 · 0 comments

ChernikovP commented Mar 11, 2019

scala> val d: Double Refined Interval.Closed[W.`5.0`.T, W.`15.0`.T] = Double.NaN
d: eu.timepit.refined.api.Refined[Double,eu.timepit.refined.numeric.Interval.Closed[Double(5.0),Double(15.0)]] = NaN

scala> val f: Float Refined Interval.Closed[W.`5.0f`.T, W.`15.0f`.T] = Float.NaN
f: eu.timepit.refined.api.Refined[Float,eu.timepit.refined.numeric.Interval.Closed[Float(5.0),Float(15.0)]] = NaN

The only way to avoid this currently is to add NonNaN to the equation:

scala> val d: Double Refined And[Interval.Closed[W.`5.0`.T, W.`15.0`.T], NonNaN] = Double.NaN
<console>:24: error: Right predicate of ((!(NaN < 5.0) && !(NaN > 15.0)) && (NaN != NaN)) failed: Predicate failed: (NaN != NaN).
       val d: Double Refined And[Interval.Closed[W.`5.0`.T, W.`15.0`.T], NonNaN] = Double.NaN

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