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


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bug #51000: Incorrect results of gsl_airy_deriv function

Submitted by:  Xin Yi <star_09>
Submitted on:  Thu 11 May 2017 01:20:41 AM UTC  
Category: Accuracy problemSeverity: 3 - Normal
Operating System: ubuntu 14.04Status: None
Assigned to: NoneOpen/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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