Linear.Epsilon

Testing for values near zero

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

Methods

nearZero :: a -> Bool

Determine if a quantity is near zero.

Instances

Epsilon Double

abs a <= 1e-12

Epsilon Float

abs a <= 1e-6

(Num (V0 a), Epsilon a) => Epsilon (V0 a)

(Num (V2 a), Epsilon a) => Epsilon (V2 a)

(Num (V3 a), Epsilon a) => Epsilon (V3 a)

(Num (V4 a), Epsilon a) => Epsilon (V4 a)

(Num (Plucker a), Epsilon a) => Epsilon (Plucker a)

(Num (Quaternion a), RealFloat a, Epsilon a) => Epsilon (Quaternion a)