You just have a few problems. Where should be lowercase. The single quotes should be backticks "`". You may have some indentation issues. And lastly, you have some problems with e and f

e = round (log $ fromIntegral n)
f = round (log 2)

Otherwise it seems fine.

On Sun, Dec 1, 2013 at 2:22 AM, willie ekaputra <willieekaputra@gmail.com> wrote:

Hi everyone !
I am newbie and I made this code for counting k, so that 2^k divisor of n.Somehow it doesn't work.
Anyone knows what is wrong?

Regards and thanks.
Wili.

maxexp2:: Int -> Int
maxexp2 n
    |n== 0 || 2^k 'mod' n /=0 =0
    |otherwise = k
          Where
           k= e ' div' f
           e=round (fromIntegral (log n))
            f = round (fromIntegral (log 2))

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