bugGNU Scientific Library - Bugs: bug #31528, gsl_sf_bessel_lnKnu overflows for...

 
 

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bug #31528: gsl_sf_bessel_lnKnu overflows for large nu

Submitter:  eyaler <eyaler>
Submitted:  Tue 02 Nov 2010 05:13:13 PM UTC
   
 
Category:  Runtime error Severity:  3 - Normal
Operating System:  Status:  Fixed
Assigned to:  bjg Open/Closed:  Closed
Release:  1.14

Thu 11 Nov 2010 02:55:44 PM UTC, comment #1: 

Thanks for the bug report. I found an internal overflow which caused the problem.  It is fixed by commit 4698.

-Deleted Account- <bjg>
Tue 02 Nov 2010 05:13:13 PM UTC, original submission:  

gsl_sf_bessel_lnKnu(nu, x) computes the natural logarithm of the modified bessel function of the second kind, with real arguments.

the function implementation overflows for large order (nu). for example:
gsl_sf_bessel_lnKnu(180.0, 2.2) should return ~ 175.2, but it gives INF
gsl_sf_bessel_lnKnu(3500.5, 1500) should return ~ 1731.2, but it gives INF

eyaler <eyaler>

 

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Follow 7 latest changes.

Date Changed by Updated Field Previous Value => Replaced by
2021-11-10 eyaler Carbon-CopyRemoved 80701 -
2021-11-10 eyaler Carbon-CopyRemoved -email is unavailable- -
2010-11-11 bjg StatusConfirmed Fixed
    Open/ClosedOpen Closed
2010-11-11 bjg StatusNone Confirmed
    Assigned toNone bjg
2010-11-02 eyaler Carbon-Copy- Added -email is unavailable-

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