In article <[EMAIL PROTECTED]>, Just <[EMAIL PROTECTED]> wrote: > >Heh, how big are the odds you find the author of an arbitrary Perl >module on c.l.py... >
Hey, that's why it's called lurking. > >Any will do. As I wrote in another post, I'm currently only looking for >a quintic equation solver, which your module does very nicely. > >> The >> original source for the algorithm used in the module is >> from Hiroshi Murakami's Fortran source, and it shouldn't >> be too difficult to repeat the translation process to python. > >Ah ok, I'll try to locate that (following the instruction in Solve.pm >didn't work for me :( ). > Ouch. I just did a quick search and found that that site has undergone a few changes, and the code that i reference is missing. A few other links in the docs are stale too. I need to update the documentation. Anyway, doing a search for 'hqr' and Eispack got me a lot of sites. In particular, this one is pretty friendly: <http://netlib.enseeiht.fr/eispack/> Look at the source for balanc.f (does the prep-work) and hqr.f (does the solving). Minor annoyance: the real and imaginary parts of the roots are in separate arrays. I combined them into complex types in my perl source, in case you want to make a comparison. Of course, all this may be moot if the other suggestions work out. -- -john February 28 1997: Last day libraries could order catalogue cards from the Library of Congress. -- http://mail.python.org/mailman/listinfo/python-list
