Copyright  (C) 2012 Edward Kmett 

License  BSDstyle (see the file LICENSE) 
Maintainer  Edward Kmett <ekmett@gmail.com> 
Stability  provisional 
Portability  portable 
Safe Haskell  SafeInferred 
Language  Haskell98 
Testing for values "near" zero
Documentation
class Num a => Epsilon a where Source
Provides a fairly subjective test to see if a quantity is near zero.
>>>
nearZero (1e11 :: Double)
False
>>>
nearZero (1e17 :: Double)
True
>>>
nearZero (1e5 :: Float)
False
>>>
nearZero (1e7 :: Float)
True
Epsilon Double 

Epsilon Float 

Epsilon CFloat 

Epsilon CDouble 

Epsilon a => Epsilon (V0 a)  
Epsilon a => Epsilon (V1 a)  
Epsilon a => Epsilon (V2 a)  
Epsilon a => Epsilon (V3 a)  
Epsilon a => Epsilon (V4 a)  
Epsilon a => Epsilon (Plucker a)  
(RealFloat a, Epsilon a) => Epsilon (Quaternion a)  
Epsilon (f a) => Epsilon (Point f a)  
(Dim k n, Epsilon a) => Epsilon (V k n a) 