[Numpy-discussion] Integer overflow in test_einsum (1.7.1)

Toder, Evgeny evgeny.toder at jpmorgan.com
Tue May 14 15:53:24 EDT 2013

Thank you, Pauli. I guess this means that the test needs to be fixed?


-----Original Message-----
From: numpy-discussion-bounces at scipy.org [mailto:numpy-discussion-bounces at scipy.org] On Behalf Of Pauli Virtanen
Sent: Tuesday, May 14, 2013 3:31 PM
To: numpy-discussion at scipy.org
Subject: Re: [Numpy-discussion] Integer overflow in test_einsum (1.7.1)

14.05.2013 21:52, Toder, Evgeny kirjoitti:
> So, does numpy implement modular (two's complement)
> arithmetic for signed types

Numpy leaves integer arithmetic to the C compiler.

Python and its C modules however by default specify -fwrapv for gcc and
its ilk, so the behavior might seem consistent on these platforms.

Pauli Virtanen

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