[Haskell-cafe] floating point operations and representation
bulat.ziganshin at gmail.com
Mon Mar 17 13:06:39 EDT 2008
Monday, March 17, 2008, 7:59:09 PM, you wrote:
>> foreign import ccall unsafe "math.h log10"
>> c_log10 :: CDouble -> CDouble
>> log10 :: Double -> Double
>> log10 x = realToFrac (c_log10 (realToFrac x))
> It's a bit sloppier, but shouldn't cause any trouble. And I've no
> idea how realToFrac is implemented, but would worry about it behaving
> oddly... for instance when given NaNs.
it should be nop (no operation) in such cases
Bulat mailto:Bulat.Ziganshin at gmail.com
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