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https://issues.apache.org/jira/browse/MATH-269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Phil Steitz closed MATH-269.
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> 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.
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