[Python-ideas] Py_SIZE of PyLongs

[Elliot Gorokhovsky]

A quick note:

I'm working on a special-case compare function for bounded integers for the
sort stuff. By looking at the implementation, I figured out that Py_SIZE of
a long is the sign times the number of digits (...right?). Before looking
at the implementation, though, I had looked for this info in the docs, and
I couldn't find it anywhere. Since Py_SIZE is public, I think the
documentation should make clear what it returns for PyLongs, for example
somewhere on the "Integer Objects" page. Apologies if this is specified
somewhere else in the docs and I just couldn't find it.

Elliot
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