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From "Luc Maisonobe (JIRA)" <>
Subject [jira] [Resolved] (MATH-794) LP on android devices
Date Thu, 31 May 2012 12:47:23 GMT


Luc Maisonobe resolved MATH-794.

    Resolution: Invalid

According to user, a simpler problem provided the same result on Android and desktop environment.
So the problem was elsewhere.
> LP on android devices
> ---------------------
>                 Key: MATH-794
>                 URL:
>             Project: Commons Math
>          Issue Type: Bug
>    Affects Versions: 3.0
>         Environment: Android 2.2 JDK 1.6
>            Reporter: Sylvain Roussé
>              Labels: android
> When I express a Linear Programming problem in a Pure Java environment, I get a solution
> When I express thje same linear programming problem in a Java Android environment using
the same problem modelling classes, I get a solution A', which doesn't match the constraints
I express.
> For instance, If I have a set of Xi variables, with each Xi >= 0, I can get some Xj
< 0.
> Or if I have Xi >= a, then in the solution, I can have Xi < a.
> I noticed that for freechart library, they have made a special library for android (Jfreecharrtt
for pure javan Afreechart for Android).
> I have tried to compile the source with my android app, but the problem is the same.
> Is it necessary to have a library built up for android devices ?
> Is it possible to have commons-math for android ?
> In advance thanks.
> Regards.
> Sylvain.

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