checkers-0.1.3: Check properties on standard classes and data structures.
Test.QuickCheck.Instances.Num
nonNegative :: (Num a, Arbitrary a) => Gen aSource
nonPositive :: (Num a, Arbitrary a) => Gen aSource
negative :: (Num a, Arbitrary a) => Gen aSource
positive :: (Num a, Arbitrary a) => Gen aSource
nonZero :: (Num a, Arbitrary a) => Gen a -> Gen aSource
nonZero_ :: (Num a, Arbitrary a) => Gen aSource