Sunday, March 31, 2013

Deprecated libraries removed

I had some Common Lisp libraries on Github that I have abandonned a while ago, mostly because I have either

1. found a better library by someone else,
2. decided to follow alternative approaches, or
3. write a better version with an incompatible API.

These libraries have been undergoing some quiet bit-rot for a while which makes them unusable without minor or not so minor fixes, for which I have no time; also, there are better libraries out there for the same purpose.

Having abandonned Common Lisp libraries out there is confusing and goes against the principle of consolidating Common Lisp Libraries, so I decided to remove some repositories. In particular, I have removed

1. cl-2d, which didn't see any new development in the last two years. My recommended replacement is cl-flexplot, which uses PGF (a LaTeX package) as a backend.
2. cl-text-tables was simply abandonned, I recommend the excellent cl-csv instead.
3. cl-numlib is superseded by cl-num-utils.

The latter two suggested replacements are in Quicklisp.

If, for some strange reason, anyone is interested in the code of the dead libraries, just write me an e-mail. But I would prefer if these libraries stayed dead, as there are much better replacements out there.

It is very likely that I will remove other deprecated libraries in the future.

Monday, March 25, 2013

LLA update

Lisp Linear Algebra was updated today. This is a major update, so I increased the version number to 0.2. Compared to the previous version, all of the changes are internal and do not affect the already existing API, with the exception of an experimental destructive BLAS interface, which was contributed by Gábor Melis.

Gábor also made the necessary changes to the internals (which were not designed for destructive updates before), and re-enabled the array pinning interface for SBCL. This means that if you arrays have the same float type, and it is one of the four supported float types (single-float, double-float, and their complex counterparts), SBCL will not copy your arrays unless it has to (eg because they would be overwritten or need to be transposed). I am grateful for Gábor's contributions.

The destructive BLAS interface is still experimental, so the API may be refined in future versions.