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Re: [suggestion] for gsl_sf_Ci_e (in specfunc/sinint.c)


Arvid Requate wrote:
> 
> while using the special function routine gsl_sf_Ci_e, I noticed
> that given an argument of zero it aborts with an error, while
> mathematically it should simply return zero.

Ci(x) has a logarithmic singularity at x=0. There may
be varying definitions, but the standard one has this
behaviour, as does the implementation in GSL.

Thanks.

-- 
G. Jungman


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