[Haskell-cafe] Poor libraries documentation

[Lutz Donnerhacke]

* Jonathan Cast wrote:
> On 30 Jan 2008, at 7:19 PM, Anton van Straaten wrote:
> > quickCheck $  x -> cos (x + 2*pi) == cos x
> Falsifiable, after 2 tests:
> -1.0

> Test.QuickCheck.quickCheck $ \x -> abs (cos x - cos (x + 2*pi)) < 0.00001
OK, passed 100 tests.