Brian Gough wrote:
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?
Hello,
Apart from constant factors it is 1/gsl_sf_hazard().
See http://www.network-theory.co.uk/docs/gslref/gsl-ref_105.html
Right, I didn't see that one. Thanks a lot, it works fine.
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