[issue2486] Recode (parts of) decimal module in C
Ramchandra Apte maniandra...@gmail.com added the comment: If issue7652 finishes. There's no point in fixing this bug. -- nosy: +ramchandra.apte ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Mark Dickinson dicki...@gmail.com added the comment: No, this should be closed. -- ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Changes by Mark Dickinson dicki...@gmail.com: -- resolution: - rejected status: open - closed ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Changes by Georg Brandl ge...@python.org: -- assignee: - skrah nosy: +skrah ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Mark Dickinson dicki...@gmail.com added the comment: Guess that makes this a bit of a wasted effort on my part, then. Darn. a substantial portion of the module should be coded in C and needs to function independently of Python, with accessors provided to for Python to wrap around. I'm curious what sort of memory model you have in mind for this: would you implement separate memory management code that could easily be swapped in or out for the standard Python object allocator? Or does the functioning independently of Python bit not go as far as memory management? In any case, let me know if there's anything I can do to help out, whether it's coding, or review, or whatever. For what it's worth, I'm hoping to check in a significantly simpler (and I hope faster!) version of the log, log10 and exp functions to decimal.py in the near future, which should make rewriting that portion a little easier. The pow stuff could use some work, too. -- assignee: marketdickinson - ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Nick Coghlan ncogh...@gmail.com added the comment: FWIW, I actually prefer Mark's graduated approach to the Python-C migration since we have a continuously working module that will get incrementally faster over time. As profiling finds performance bottlenecks in the Python code, those parts can be migrated to C (e.g. as has been done initially with the manipulation of the coefficient, which has been one of the main time sinks in the decimal module since the days when it was still stored as a tuple instead of a string). Having most of the module in C should be the endpoint, not where we attempt to start (as I recall, attempts to rewrite the whole module in C in one go have already been made, and they failed miserably). ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Changes by Mark Dickinson dicki...@gmail.com: -- assignee: facundobatista - marketdickinson title: Decimal slowdown in 3.0 due to str/unicode changes - Recode (parts of) decimal module in C ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Mark Dickinson dicki...@gmail.com added the comment: (2) Bring proposals to add a decimal literal to C ... That should be to Python, not to C, of course. ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Antoine Pitrou pit...@free.fr added the comment: By the way, presumably it's not a prerequisite for (2) that *all* of the decimal.py functionality be recoded in C? I could imagine a situation where the decimal literals are present in the core, but an 'import decimal' was necessary to get complete functionality. We already have this situation with builtin open() and import io, so I guess that wouldn't be out of question. -- nosy: +pitrou ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue2486] Recode (parts of) decimal module in C
Raymond Hettinger rhettin...@users.sourceforge.net added the comment: FWIW, I'm currently seeking project sponsorship to work on this. To do it right, a substantial portion of the module should be coded in C and needs to function independently of Python, with accessors provided to for Python to wrap around. Once, there is a fast C version, a discussion of a decimal literal can become a reasonable possibility. It will be an uphill battle though. Many decimal apps have few internal constants -- most of the data comes into the program from and external source and gets written back. A literal itself doesn't have much utility except for playing around at the command line. Also, there would need to be a PEP talking about how decimals should interact with binary floats and the rest of the language (which pretty much ignores decimals). -- priority: high - normal ___ Python tracker rep...@bugs.python.org http://bugs.python.org/issue2486 ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
