On 17.12.2014, at 18:17, Chris Muller <asqueaker at gmail.com> wrote:
> 
>          Float>>#hashKey32
>               self == NegativeInfinity ifTrue: [ ^ 0 ].
>               self == Infinity ifTrue: [ ^ 4294967294 ].
>               self isNaN ifTrue: [ ^ 4294967295 ].
>               self == NegativeZero ifTrue:  [ ^ 2147483650 ].
>               "Smallest to largest negative IEEE 32-bit floats range
> from  (2147483649 to: 4286578687), so invert that range."
>               self negative ifTrue: [ ^ (4286578687 - self
> asIEEE32BitWord) + 1 ].
>               "We're positive.  IEEE positives range from (0 to: 2139095039)."
>               ^ self asIEEE32BitWord + 2147483651
> 
> Since I need _maximum_ speed, I do not wish the check for Infinites
> and NaN's, the special cases, to require a message send..

This is a Float method. You can use the NaN class variable directly.

- Bert -



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