hmatrix-special-0.4.0.1: Interface to GSL special functions

Copyright(c) Alberto Ruiz 2006
LicenseGPL-style
MaintainerAlberto Ruiz (aruiz at um dot es)
Stabilityprovisional
Portabilityuses ffi
Safe HaskellNone
LanguageHaskell98

Numeric.GSL.Special

Contents

Description

Synopsis

Functions

Util

mkComplex_e :: (Double -> Double -> ((Double, Double), (Double, Double))) -> Complex Double -> (Complex Double, Complex Double) Source #

Some GSL complex functions work with separate real and imaginary parts stored in real variables, obtaining tuples (value, error) for the real and imaginary parts of the result:

> import Numeric.GSL.Special.Dilog
> complex_dilog_xy_e 1 1
((0.6168502750680847,1.1097853812294034e-14),(1.4603621167531193,1.1855504863267322e-14))

We can use mkComplex_e to work with "normal" complex numbers:

> import Numeric.GSL.Special(mkComplex_e)
> import Data.Complex
> let dilogC = fst . mkComplex_e complex_dilog_xy_e
> dilogC (1 :+ 1)
0.6168502750680847 :+ 1.4603621167531193