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List:       python-list
Subject:    Re: gmpy moving to code.google.com
From:       "Daniel Nogradi" <nogradi () gmail ! com>
Date:       2007-02-28 20:22:03
Message-ID: 5f56302b0702281222ped0834aqe19481907bf96b61 () mail ! gmail ! com
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> Could you please tell me, on that 64-bit build, what happens with:
>
> >>> import gmpy, sys, operator
> >>> sys.maxint
> ???
> >>> gmpy.mpz(sys.maxint)
> ???
> >>> operator.index(gmpy.mpz(sys.maxint))
> ???
> >>> sys.maxint+1
> ???
> >>> gmpy.mpz(sys.maxint+1)
> ???
> >>> operator.index(gmpy.mpz(sys.maxint)+1)
> ???
>
> i.e., what are the values correspondiing to the ??? occurrences when
> you actually do that...?

Here it goes (python 2.5 - 64bit):

>>> import gmpy, sys, operator
>>> sys.maxint
9223372036854775807
>>> gmpy.mpz(sys.maxint)
mpz(-1)
>>> operator.index(gmpy.mpz(sys.maxint))
-1
>>> sys.maxint+1
9223372036854775808L
>>> gmpy.mpz(sys.maxint+1)
mpz(9223372036854775808L)
>>> operator.index(gmpy.mpz(sys.maxint)+1)
0

I don't pretent to fully understand what's going on, but
gmpy.mpz(sys.maxint)==gmpy.mpz(-1) is more than suspicious :)
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