Joshua Reusch: > why does this assertion fail: > > > assert(float.nan == float.nan);
By design, the hardware that manages floating point numbers makes a NaN not equal to everything else, including other NaNs: http://en.wikipedia.org/wiki/NaN In D2 "is" performs a bitwise comparison, but keep in mind there are many different NaNs (I think double.nan and double.init are different in the bits too). Bye, bearophile
