This is no longer an issue as I found how to read and write Float and Double at the link below http://www.n-heptane.com/nhlab/repos/NewBinary/Tests/BinDouble.hs Originally, I was looking to get a chunk of memory using getByteArray from NewBinary.Binary and read a Storable after converting the array to a pointer. getByteArray :: BinHandle -> Int -> IO ByteArray getByteArray bh (I# sz) = do (MBA arr) <- newByteArray sz let loop n | n ==# sz = return () | otherwise = do w <- getByte bh writeByteArray arr n w loop (n +# 1#) loop 0# freezeByteArray arr Thanks, Joel On Oct 8, 2005, at 4:49 AM, Donald Bruce Stewart wrote:

Try it and see.. I think I have indeed done this in an old version of Yi. However, it sounds a bit iffy, and there's no reason not to use a ForeignPtr-ified malloc'd chunk of memory.

-- http://wagerlabs.com/idealab