Re: ghc and signal processing

Hmmm. With -O2 on GHC 6.2, I get 0.177s, 0.217s, and 0.348s for your three Haskell examples and 0.187s (with gcc -O2) for your C example. The output of -ddump-simpl for the looks perfect for the second Haskell example. My GHC seems to be doing a bang-up job here. What's wrong with yours? (For the third example GHC's code could be improved by additional inlining or hoisting of a constant array outside of the loop.) mike