[issue4258] Use 30-bit digits instead of 15-bit digits for Python integers.

[Mark Dickinson]

Mark Dickinson <dickinsm at gmail.com> added the comment:

> Yes, it uses base 2**15 but it's not the correct conversion to base 
> 2**15. You convert each PyLong digit to base 2**15 but not the whole 
> number.

I don't understand:  yes, each base 2**30 digit is converted to a pair 
of base 2**15 digits, and if necessary (i.e., if the top 15 bits of the 
most significant base 2**30 digit are zero) the size is adjusted.  How 
is this not converting the whole number?

> As a result, the format is different than the current mashal version.

Can you give an example of an integer n such that marshal.dumps(n) gives 
you different results with and without the patch?  As far as I can tell, 
I'm getting the same marshal results both with the unpatched version and 
with the patch applied.

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue4258>
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