[Haskell-cafe] trying to go from FFT type to Vector.Storable

Henk-Jan van Tuyl hjgtuyl at chello.nl
Tue May 12 08:43:33 UTC 2015

On Tue, 12 May 2015 05:50:26 +0200, <briand at aracnet.com> wrote:

> (FFTWReal r, Ix i, Shapable i) => CArray i (Complex r) -> CArray i  
> (Complex r)
> FFTWReal maps to RealFloat which i found, but i haven't found anything  
> that will take a RealFloat and give me a Double.


You could use something like:
   toDouble :: FFTWReal r => r -> Double
   toDouble = id

Or add the type of the functions you create to your program.

Henk-Jan van Tuyl

Folding at home
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