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

Submitted by:  eyal gruss <eyaler>
Submitted on:  Tue 02 Nov 2010 05:13:13 PM UTC  
 
Category: Runtime errorSeverity: 3 - Normal
Operating System: Status: Fixed
Assigned to: -Deleted Account- <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>In charge of this item.
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

eyal gruss <eyaler>

 

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    Follow 5 latest changes.

    Date Changed By Updated Field Previous Value => Replaced By
    Thu 11 Nov 2010 02:55:44 PM UTCbjgStatusConfirmed=>Fixed
      Open/ClosedOpen=>Closed
    Thu 11 Nov 2010 12:01:50 PM UTCbjgStatusNone=>Confirmed
      Assigned toNone=>bjg
    Tue 02 Nov 2010 05:13:13 PM UTCeyalerCarbon-Copy-=>Added -unavailable-

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