Moduleerf-2.0.0.0Haskell98

Data.Number.Erf

2 classes

Packageerf-2.0.0.0
Exports2
LanguageHaskell98
LicenceBSD-3-Clause
SourceErf.hs

classclass 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.

Minimal complete definition is erfc or normcdf.

Methods

erf :: a -> a
erfc :: a -> a
erfcx :: a -> a
normcdf :: a -> a

Instances2Erf

Erf DoubleDefined in erf-2.0.0.0 · Data.Number.Erf
Erf FloatDefined in erf-2.0.0.0 · Data.Number.Erf

classclass 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.

Methods

inverf :: a -> a
inverfc :: a -> a
invnormcdf :: a -> a

Instances2InvErf

InvErf DoubleDefined in erf-2.0.0.0 · Data.Number.Erf
InvErf FloatDefined in erf-2.0.0.0 · Data.Number.Erf