7 lines
314 B
Haskell
7 lines
314 B
Haskell
isIntegerF :: (Eq x, RealFrac x) => x -> Bool
|
|
isIntegerF x = x == fromInteger (truncate x)
|
|
|
|
instance ContainsInteger Double where isInteger = isIntegerF
|
|
instance Integral i => ContainsInteger (DecimalRaw i) where isInteger = isIntegerF
|
|
instance Integral i => ContainsInteger (Ratio i) where isInteger = isIntegerF
|