erf-2.0.0.0: The error function, erf, and related functions.
Data.Number.Erf
Synopsis
class Floating a => Erf a where #
Error function related functions.
The derivative of erf is x -> 2 / sqrt pi * exp (x^2), and this uniquely determines erf by erf 0 = 0.
erf
x -> 2 / sqrt pi * exp (x^2)
erf 0 = 0
Minimal complete definition is erfc or normcdf.
erfc
normcdf
Methods
erf :: a -> a #
erfc :: a -> a #
erfcx :: a -> a #
normcdf :: a -> a #
Instances
erf :: Double -> Double #
erfc :: Double -> Double #
erfcx :: Double -> Double #
normcdf :: Double -> Double #
erf :: Float -> Float #
erfc :: Float -> Float #
erfcx :: Float -> Float #
normcdf :: Float -> Float #
class Floating a => InvErf a where #
Inverse error functions, e.g., inverf . erf = id and erf . inverf = id assuming the appropriate codomain for inverf. Note that the accuracy may drop radically for extreme arguments.
inverf . erf = id
erf . inverf = id
inverf
Minimal complete definition
invnormcdf
inverf :: a -> a #
inverfc :: a -> a #
invnormcdf :: a -> a #
inverf :: Double -> Double #
inverfc :: Double -> Double #
invnormcdf :: Double -> Double #
inverf :: Float -> Float #
inverfc :: Float -> Float #
invnormcdf :: Float -> Float #