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72aed27 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | Regenerating lapack_lite source
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:Author: David M. Cooke <cookedm@physics.mcmaster.ca>
:Modified by David Huggins-Daines <dhdaines@gmail.com> for Sphinx
``blas_lite.c``, ``slapack_lite.c``, are ``f2c``'d versions of the
LAPACK routines required by the ``LinearAlgebra`` module, and wrapped
by the ``lapack_lite`` module. The scripts in this directory can be
used to create these files automatically from a directory of LAPACK
source files.
You'll need `Plex 1.1.4`_ installed to do the appropriate scrubbing.
.. _Plex 1.1.4: http://www.cosc.canterbury.ac.nz/~greg/python/Plex/
The routines that ``lapack_litemodule.c`` wraps are listed in
``wrapped_routines``, along with a few exceptions that aren't picked up
properly. Assuming that you have an unpacked LAPACK source tree in
``~/LAPACK``, you generate the new routines in a directory ``new-lite/`` with::
$ python ./make_lite.py wrapped_routines ~/LAPACK new-lite/
This will grab the right routines, with dependencies, put them into the
appropiate ``blas_lite.f``, ``dlapack_lite.f``, or ``zlapack_lite.f`` files,
run ``f2c`` over them, then do some scrubbing similiar to that done to
generate the CLAPACK_ distribution.
.. _CLAPACK: http://netlib.org/clapack/index.html
The versions in CVS as of 2005-04-12 use the LAPACK source from the
`Debian package lapack3`_, version 3.0.20000531a-6. It was found that these
(being regularly maintained) worked better than the patches to the last
released version of LAPACK available at the LAPACK_ page.
.. _Debian package lapack3: http://packages.debian.org/unstable/libs/lapack3
.. _LAPACK: http://netlib.org/lapack/index.html
A slightly-patched ``f2c`` was used to add parentheses around ``||`` expressions
and the arguments to ``<<`` to silence gcc warnings. Edit
the ``src/output.c`` in the ``f2c`` source to do this.
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