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

[Brian Gough]

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.