[ typo ] 'castFloatToWord32' -> 'castFloatToWord64'
[ typo ] 'castFloatToWord32' -> 'castFloatToWord64'

Probably due to a copy/paste gone wrong.
sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc,sdiehl/ghc