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Re: [Help-gsl] Bessel functions and continued fractions

From: Brian Gough
Subject: Re: [Help-gsl] Bessel functions and continued fractions
Date: Tue, 10 Aug 2010 21:31:53 +0100
User-agent: Wanderlust/2.15.6 (Almost Unreal) Emacs/23.2 Mule/6.0 (HANACHIRUSATO)

At Fri, 6 Aug 2010 12:26:50 +0100,
Jonny Taylor wrote:
> The following is demonstrates the problem:
>     /*  Testcase demonstrating long calculation time:
>         Time spent in gsl_sf_bessel_J_CF1 for large x<1000 and n<5
>         grows in proportion to x */
>     TEST_SF(s, gsl_sf_bessel_Jn_e, (45, 900.0, &r),     
> 0.02562434700634278108,    TEST_TOL0, GSL_SUCCESS);
> The results do appear to be accurate (the reference value here is taken from 
> Mathematica) in spite of the large number of iterations.

Thanks, I've added it to the test suite for future reference.

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