[Python-Dev] SIGCHECK() in longobject.c (original) (raw)

Mark Dickinson dickinsm at gmail.com
Tue Oct 20 13:22:33 CEST 2009

On Tue, Oct 20, 2009 at 11:49 AM, Nick Coghlan <ncoghlan at gmail.com> wrote:

Mark Dickinson wrote:

This high-precision inefficiency could easily be fixed by using a dedicated 'decimal natural number' extension type for the Decimal coefficient, stored internally in base a suitable power of 10. [...] Didn't you already start work on that concept with the deccoeff patch?

I did: the code can be seen at:

http://svn.python.org/view/sandbox/trunk/decimal/decimal_in_c/

This code defines a Deccoeff type as above, providing base 10 natural number arithmetic, along with a skeletal _Decimal type. The work on Deccoeff is pretty much complete, but the _Decimal type is only just a beginning; the original intent was to slowly translate the Decimal code into C and move it into the _Decimal type.

The code was working a few months ago (with all Decimal tests passing), but there have been some changes and bugfixes since then. I might try to resurrect that code, dropping the _Decimal type and just concentrating on Deccoeff.

Mark

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