[
https://issues.apache.org/jira/browse/MATH-269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Luc Maisonobe resolved MATH-269.
--------------------------------
Resolution: Won't Fix
On the one hand the F2J classfile processor cannot be published by ASF due to
licensing issues. On the other hand commons projects always publish all sources
to allow people to modify the code and rebuild it to meet their needs. Since
nobody in the project can handle the task to provide another way to create the
translated file in an Apache compatible way directly from source, we cannot
provide this feature.
> Use F2J translated BLAS/LAPACK
> ------------------------------
>
> Key: MATH-269
> URL: https://issues.apache.org/jira/browse/MATH-269
> Project: Commons Math
> Issue Type: New Feature
> Affects Versions: 2.1
> Reporter: Sam Halliday
>
> This is part of the proposal to integrate MTJ, netlib-java and commons-math
> which has been well received on the developers' list, @see
> http://www.nabble.com/commons-math,-matrix-toolkits-java-and-consolidation-tt23537813.html
> Commons Math currently uses hand-crafted BLAS/LAPACK-like methods, whereas
> the F2J has maintained a full Java translation of the BLAS and LAPACK fortran
> code, and is applicable to most of the scientific code built on top of those
> libraries (e.g. ARPACK). It enables maintenance to BLAS/LAPACK to be handled
> by the netlib team, even for the Java translation. BLAS and LAPACK are
> industry standard APIs.
> This proposal is to incorporate the translations into the commons-math
> project. A follow-up RFE will to define the API to be used in place of the
> existing code (i.e. incorporate netlib-java). I do not recommend making the
> F2J translations a part of the public API.
> The code translated by F2J follows the same BSD licence as the netlib
> libraries. I understand this is compatible with the Apache licence.
> F2J translations can be directed to any package name, currently they output
> in the "org.netlib.{blas,lapack}" domain, but commons-math may prefer to use
> "org.apache.commons.math.netlib".
> There is a caveat: the translation of Fortran code introduces a language
> feature not available in Java - the GOTO statement. Java translations are
> post-compile processed by a "javab" tool (distributed with F2J) which
> augments the bytecode and allows the code to behave as the Fortran original.
> This rules out the possibility of simply including the source code in the
> commons-math tree, unless the javab tool becomes part of the build process.
> The alternative is to maintain a custom binary (built using F2J from netlib
> sources), or to use a maven dependency.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
