bugGNU Octave - Bugs: bug #46769, Psi (digamma/polygamma) function...

 
 

bug #46769: Psi (digamma/polygamma) function not in core Octave

Submitted by:  Nir Krakauer <nir_krakauer>
Submitted on:  Mon 28 Dec 2015 02:21:13 PM UTC  
 
Category: Octave FunctionSeverity: 3 - Normal
Priority: 5 - NormalItem Group: Feature Request
Status: InvalidAssigned to: None
Originator Name: Open/Closed: Closed
Release: devOperating System: Any

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Mon 28 Dec 2015 03:58:05 PM UTC, comment #1:

This has been implemented back in March. It will be part of the 4.2 release

http://hg.savannah.gnu.org/hgweb/octave/file/default/libinterp/corefcn/psi.cc

Carnë Draug <carandraug>
Project Member
Mon 28 Dec 2015 02:21:13 PM UTC, original submission:

Matlab has an implementation in core [1].

Octave currently has psi and psi_n in the unmaintained gsl package [2, 3].

There is also third-party code that could be used as a basis for implementation if we don't want core Octave to depend on GSL, e.g. [4] (LGPL).

[1] http://www.mathworks.com/help/matlab/ref/psi.html
[2] http://octave.sourceforge.net/gsl/function/psi.html
[3] http://octave.sourceforge.net/gsl/function/psi_n.html
[4] http://people.sc.fsu.edu/~jburkardt/m_src/asa103/asa103.html

Nir Krakauer <nir_krakauer>

 

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    Date Changed By Updated Field Previous Value => Replaced By
    Mon 28 Dec 2015 03:58:05 PM UTCcarandraugStatusNone=>Invalid
      Open/ClosedOpen=>Closed

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