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Comment by opnitro | Hacker News Reader

Nit picking, but floating point is commutative either.

  1 + NaN == NaN
  Nan + 1 == NaN
  Nan != Nan

(NaN is defined as not being equal to itself)

Nit picking, but floating point is not commutative either.

ya got me

Well then define it to be equal to itself ;)

NaN is a strange thing anyways, for example you cannot invert it so that NaN+(-NaN)=0