sk: > On 18.07.2008, at 19:47, Don Stewart wrote: > >sk: > >>On 17.07.2008, at 21:46, Lennart Augustsson wrote: > >>>If scaleFloat and exponent are implemented with bit twiddling > >>>they can > >>>be quite fast. > >> > >>is there a way in ghc to 'cast' between float/int32 and double/int64 > >>(without going through memory)? > > > >Yeah, > > > > "fromIntegral/Int->Float" fromIntegral = int2Float > > "truncate/Float->Int" truncate = float2Int > > > > > > "truncate/Double->Int" truncate = double2Int > > > >with appropriate no-op fromIntegrals for the 32 and 64 variants. > > i actually meant something like *(uint32_t*)fptr, but thanks anyway ;)
ah well, these should compile into as-close-to-noops as possible. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe