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Re: integrating over a multiple step-function



Hi,

I need to compute bessel function for large arguments (for example: 
gsl_sf_bessel_Jn(0,20000))
and GSL crashes with the following error message:
gsl: bessel.c:531: ERROR: error
Abort (core dumped)

I check the gsl_sf_bessel_Jn with 2 version of GSL 0.9.4 and 1.1.1:
on GSL 0.9.4, GSL gave me the good value but with the wrong sign and
now with the GSL 1.1.1 it crashes.

Is it a bug or a known limitation of GSL?


R. Conan

-- 
Rodolphe Conan

European Southern Observatory
Instrumentation Division
Adaptive Optics Group
Karl-Schwarzschild-Str.  2
D-85748 Garching bei Muenchen
Germany

Tel: +49-89-32006541    Fax: +49-89-3202362
e-mail : rconan@eso.org 




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