[issue887237] Machine integers
Alexander Belopolsky
report at bugs.python.org
Wed Dec 10 22:28:08 CET 2008
Alexander Belopolsky <belopolsky at users.sourceforge.net> added the comment:
> I wonder if a patch for ctypes like this (which is not yet complete)
> could be used to implement this, or MUST it be implemented in C?
For the intended purpose of giving access to raw machine arithmetics, I
would think a C implementation would be required, but Theller's patch is
a good start.
> One difficulty with the patch is that the original ctypes code
> contained a tp_as_number ...
This can be solved by changing the order of bases for c_<type> classes.
See attached.
The next step would be to rewrite _NumberMixin in C. C code can be
limited to methods operating on known c_ types, say ll_add(x, y) to add
two longs and hl_cast(x) to cast short to long with python code taking
care of the dispatch. (What's the latest on the multiple dispatch, BTW?
)
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nosy: +belopolsky
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