bugGNU Scientific Library - Bugs: bug #51000, Incorrect results of...


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bug #51000: Incorrect results of gsl_airy_deriv function

Submitter:  Xin Yi <star_09>
Submitted:  Thu 11 May 2017 01:20:41 AM UTC
Category:  Accuracy problem Severity:  3 - Normal
Operating System:  ubuntu 14.04 Status:  None
Assigned to:  None Open/Closed:  Open
Release:  gsl 2.1

Thu 11 May 2017 01:20:41 AM UTC, original submission:  

I run the gsl_airy_deriv function at input -5.643803094122288e+102, the result is
1.23773099046e+25. But the results should be <0.

So I used the mpmath airyai(t,1), I got the result:-2.35733848063182e+25

I want to know the input is in the domain of gsl_airy_deriv?
Why the results so different?

Xin Yi <star_09>


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