#2099: Storable instance for Complex
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Reporter: jedbrown | Owner:
Type: proposal | Status: new
Priority: normal | Component: libraries/base
Version: 6.8.2 | Severity: normal
Keywords: | Testcase:
Architecture: Multiple | Os: Multiple
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I propose that the following instance be added to base:
{{{
instance (RealFloat a, Storable a) => Storable (Complex a) where
sizeOf z = 2 * sizeOf (realPart z)
alignment z = sizeOf (realPart z)
peek p = do
[r,i] <- peekArray 2 (castPtr p)
return (r :+ i)
poke p (r :+ i) = pokeArray (castPtr p) [r,i]
}}}
This instance is binary compatible with C99, C++ and Fortran complex
types.
It is currently needed by at least two independent packages: hmatrix and
fft. Since it is natural for user code to use both of these packages, we
need to move the instance to a common location.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2099>
GHC <http://www.haskell.org/ghc/>
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