glpk problems on cygwin

[Tatsuro MATSUOKA]

Hello

--- Jaroslav Hajek <highegg at gmail.com> wrote:

> Hi,
> this is a translated bug report from a friend of mine using Octave
> 3.0.1 from cygwin distribution.
> Given the inputs
> c = [-22,-25]; a =  a = [2,1;1,1;1,2]; b = [26,14,22];
> the glpk call
> glpk(c, a, b, [], [], 'UUU')
> frequently (but randomly) produces tiny values instead the correct
> result ([6;8]).
> I can't reproduce this problem on Linux; can anyone confirm this as a
> cygwin-specific issue?
> 
> regards

I have confirmed this error occured on my octave on cygwin-gccdw2.
For the octave on the Macro's official cygwin distribution does not cause this error.

$ /bin/octave
GNU Octave, version 3.0.1
Copyright (C) 2008 John W. Eaton and others.
This is free software; see the source code for copying conditions.
There is ABSOLUTELY NO WARRANTY; not even for MERCHANTIBILITY or
FITNESS FOR A PARTICULAR PURPOSE.  For details, type `warranty'.

Octave was configured for "i686-pc-cygwin".

Additional information about Octave is available at http://www.octave.org.

Please contribute if you find this software useful.
For more information, visit http://www.octave.org/help-wanted.html

Report bugs to <bug at octave.org> (but first, please read
http://www.octave.org/bugs.html to learn how to write a helpful report).

For information about changes from previous versions, type `news'.

octave:1> c = [-22,-25]; a =  a = [2,1;1,1;1,2]; b = [26,14,22];
octave:2> glpk(c, a, b, [], [], 'UUU')
ans =

   6
   8

**********************************************
In addition, octave on MSVC and Octave on MinGW(Tatsuro) causes such error.
 
I will check my glpk libraries.
Thanks!

Tatsuro





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