RE: Silly IO problem
On 03 November 2005 12:57, skaller wrote: On Thu, 2005-11-03 at 09:49 +0100, Mirko Rahn wrote: It prints n, rather than tak(3n,2n,n). ??? No: *Main :set args 0 *Main main 0.0 *Main :set args 1 *Main main 2.0 *Main :set args 2 *Main main 3.0 *Main :set args 3 *Main main 6.0 The same with some versions of ghc. Ah .. it seems to be a bug in gcc 4.0 The Glorious Glasgow Haskell Compilation System, version 6.4 [running on Ubuntu which uses Debian package] gcc (GCC) 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9) x86_64 Summary: gcc does not work with GHC 6.4 on x86_64 with optimisation higher than -O1 Perhaps the Evil Mangler is not working, or, possibly the version isn't even registered. Thanks for the report, I'll look into gcc 4.x before we release 6.4.2. Cheers, Simon ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: Silly IO problem
I don't see your problem. (I've put your code into the file Tac.hs) Christian [EMAIL PROTECTED]:~/haskell/examples ghc --make -o tac Tac.hs Chasing modules from: Tac.hs Compiling Main ( Tac.hs, Tac.o ) Linking ... [EMAIL PROTECTED]:~/haskell/examples ./tac 5 10.0 skaller wrote: This code doesn't work: import System(getArgs) main = do n - getArgs = readIO.head putStrLn (show (tak (3*n) (2*n) n)) tak :: Float - Float - Float - Float tak x y z | y=x = z | otherwise = tak (tak (x-1) y z) (tak (y-1) z x) (tak (z-1) x y) -- It prints n, rather than tak(3n,2n,n). Can someone give me the right encoding please? ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: Silly IO problem
On Thu, 2005-11-03 at 09:49 +0100, Mirko Rahn wrote: It prints n, rather than tak(3n,2n,n). ??? No: *Main :set args 0 *Main main 0.0 *Main :set args 1 *Main main 2.0 *Main :set args 2 *Main main 3.0 *Main :set args 3 *Main main 6.0 The same with some versions of ghc. Ah .. it seems to be a bug in gcc 4.0 The Glorious Glasgow Haskell Compilation System, version 6.4 [running on Ubuntu which uses Debian package] gcc (GCC) 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu9) x86_64 Summary: gcc does not work with GHC 6.4 on x86_64 with optimisation higher than -O1 Perhaps the Evil Mangler is not working, or, possibly the version isn't even registered. -- [EMAIL PROTECTED]:/work/felix/flx$ ghc -O3 -fvia-C -optc -O3 -o speed/exes/ghc/takfp speed/src/haskell/takfp.hs [EMAIL PROTECTED]:/work/felix/flx/speed/exes/ghc$ ./takfp 8 8.0 [EMAIL PROTECTED]:/work/felix/flx$ ghc -fvia-C -o speed/exes/ghc/takfp speed/src/haskell/takfp.hs [EMAIL PROTECTED]:/work/felix/flx$ speed/exes/ghc/takfp 8 9.0 [EMAIL PROTECTED]:/work/felix/flx$ speed/exes/ghc/takfp 3 6.0 [EMAIL PROTECTED]:/work/felix/flx$ ghc -O3 -fvia-C -optc -O2 -o speed/exes/ghc/takfp speed/src/haskell/takfp.hs [EMAIL PROTECTED]:/work/felix/flx$ speed/exes/ghc/takfp 3 3.0 [EMAIL PROTECTED]:/work/felix/flx$ ghc -O3 -fvia-C -optc -O1 -o speed/exes/ghc/takfp speed/src/haskell/takfp.hs [EMAIL PROTECTED]:/work/felix/flx$ speed/exes/ghc/takfp 3 6.0 -- John Skaller skaller at users dot sf dot net Felix, successor to C++: http://felix.sf.net ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Silly IO problem
This code doesn't work: import System(getArgs) main = do n - getArgs = readIO.head putStrLn (show (tak (3*n) (2*n) n)) tak :: Float - Float - Float - Float tak x y z | y=x = z | otherwise = tak (tak (x-1) y z) (tak (y-1) z x) (tak (z-1) x y) -- It prints n, rather than tak(3n,2n,n). Can someone give me the right encoding please? -- John Skaller skaller at users dot sf dot net Felix, successor to C++: http://felix.sf.net ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
