Data.Array.Accelerate.Linear.Epsilon

Free metric spaces

Documentation

class Num a => Epsilon a where

Provides a fairly subjective test to see if a quantity is near zero.

>>> nearZero (1e-11 :: Double)
False

>>> nearZero (1e-17 :: Double)
True

>>> nearZero (1e-5 :: Float)
False

>>> nearZero (1e-7 :: Float)
True

Minimal complete definition

nearZero

Methods

nearZero :: Exp a -> Exp Bool

Determine if a quantity is near zero.

Instances

Epsilon Double

abs a <= 1e-12

Methods

nearZero :: Exp Double -> Exp Bool

Epsilon Float

abs a <= 1e-6

Methods

nearZero :: Exp Float -> Exp Bool

Epsilon CDouble

abs a <= 1e-12

Methods

nearZero :: Exp CDouble -> Exp Bool

Epsilon CFloat

abs a <= 1e-6

Methods

nearZero :: Exp CFloat -> Exp Bool