[Haskell-cafe] Performance: MD5

[Andrew Coppin]

Bulat Ziganshin wrote:
> Hello Andrew,
>
> Sunday, May 18, 2008, 3:42:23 PM, you wrote:
>
>   
>> How much do you want to bet that the C version just reads a chunk of
>> data into RAM and then does a simple type-cast? (If I'm not very much 
>> mistaken, in C a type-cast is an O(0) operation.)
>>     
>
> try unsafeCoerce# for that.

Yeah, I might end up being forced to do that. [Although obviously it'll 
break on big-endian architectures.]

> or just use hGetArray to read directly into array of type you need
>   

hGetArray :: Handle -> IOUArray Int Word8 -> Int -> IO Int

(But yeah, I can coerce it afterwards.)