|
|
Boost : |
Subject: Re: [boost] [XInt] Some after thoughts
From: Mathias Gaunard (mathias.gaunard_at_[hidden])
Date: 2011-03-11 12:36:54
On 11/03/2011 01:06, Simonson, Lucanus J wrote:
> For infinite precision integer in particular you need access to the carry bit that is generated by vector artihmetic and other instruction
> level features.
SSE provides no mean whatsoever to obtain the carry bits when doing
addition of vectors.
Altivec does, however.
I don't see how that changes anything with regards to the user anyway.
Those are details from the internals of the 128-bit integer type.
Boost list run by bdawes at acm.org, gregod at cs.rpi.edu, cpdaniel at pacbell.net, john at johnmaddock.co.uk