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There is a newer version: 1.3.3

"Given two [[Comparable]] values, return smallest of the two.
 
 If exactly one of the given values violates the reflexivity 
 requirement of [[Object.equals]] such that `x!=x`, then the 
 other value is returned. In particular, if exactly one is 
 an [[undefined `Float`|Float.undefined]], it is not 
 returned.
 
 _On the JVM platform, for arguments of type `Integer` or 
 `Float`, prefer [[Integer.smallest]] or [[Float.smallest]]
 in performance-sensitive code._"
see (`interface Comparable`, 
     `function largest`, 
     `function min`, 
     `function Integer.smallest`,
     `function Float.smallest`)
tagged("Comparisons")
shared Element smallest(Element x, Element y) 
        given Element satisfies Comparable 
        => if (x!=x || y