Passing a matrix from C to Haskell

[Simon Marlow]

Cyril Schmidt wrote:
> Simon Marlow wrote:
> 
>>Bulat Ziganshin wrote:
> 
> [...]
> 
>>>i think we should define "secret door" to construct StorableArray from
>>>a pointer to allow to use full power of MArray interface on foreign
>>>arrays
>>
>>You mean this?
>>
>>-- |Construct a 'StorableArray' from an arbitrary 'ForeignPtr'.  It is
>>-- the caller's responsibility to ensure that the 'ForeignPtr' points to
>>-- an area of memory sufficient for the specified bounds.
>>unsafeForeignPtrToStorableArray
>>    :: ForeignPtr e -> (i,i) -> IO (StorableArray i e)
> 
> 
> It looks like this function is not available in GHC 6.4.1 (see
> http://www.haskell.org/ghc/docs/6.4.1/html/libraries/base/Data-Array-Storable.html
> )
> 
> It is, however, documented at
> http://www.haskell.org/HOpenGL/newAPI/base/Foreign-Storable.html
> but I don't know which version of GHC it applies to.

Yes, it's new since 6.4.x.  It will be in 6.6.

Cheers,
	Simon