integer division and modulo gives different results in c and python, when negative numbers
are involved. take gdb as a widely available c interpreter
print -2 /3
0 for c, -1 for python.
more amazing, modulos of negative number give negative values! (in c).
from an algebraic point of view, python seems right, but I thought python conformity to the underlying c compiler was a strong commitment, obviously not here, and I found no explanation whatsoever in python doc.
no actual programming challenge for me here, I just had this bug, after confidently translating from python to c.
I don't think there's much *commitment* to follow the behaviour of your C compiler. It's more of a default stance when the issues get too complicated for Python to implement itself. Thus, much of the floating point behaviour defaults to the behaviour of your platform because floating point math is hard and getting consistent behaviour on lots of platforms is really hard.
Integers are a piece of cake, relatively speaking, and I think that it's worth fixing up a few warts from the C behaviour.
As for documentation, see http://www.python.org/doc/current/lib/typesnumeric.html
-- Robert Kern [EMAIL PROTECTED]
"In the fields of hell where the grass grows high Are the graves of dreams allowed to die." -- Richard Harter -- http://mail.python.org/mailman/listinfo/python-list
