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Re: [Help-gsl] dawsons integral for imaginary arguments

From: Brian Gough
Subject: Re: [Help-gsl] dawsons integral for imaginary arguments
Date: Thu, 13 Apr 2006 14:38:06 +0100

Carsten Fortmann writes:
 > I need the following expression
 > exp(x*x)erfc(x)  (1).
 > Due to the exp(x*x) (not exp(-x*x)!!!),
 >   this expression returns a  nan for large arguments. I found out, that 
 > (1) is in principal given by dawsons integral for purely imaginary 
 > argument. Does anyone know how to obtain this in gsl?


Apart from constant factors it is 1/gsl_sf_hazard().

Brian Gough

Network Theory Ltd,
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