Re: [boost] about bessel function

Subject: Re: [boost] about bessel function
From: John Maddock (john_at_[hidden])
Date: 2013-08-17 07:04:50

>  I am testing the bessel function boost::math::cyl_bessel_j in gnu
> compiler with boost 1.51.0, I am testing
>
> boost::math::cyl_bessel_j(2000, 0.9)
> boost::math::cyl_bessel_j(4000, 0.9)
>
> the first one give zero but the second one gives infinity while it
> should give zero also. I wonder why it doesn't work when the order is
> bigger than 4000?

Works for me with 1.54 - can you please update your Boost version and try 
again as there have been some fixes and improvements to the Bessel functions 
over the last couple of releases.

Thanks, John.