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From: Jay Rolette <rolette@infiniteio.com>
To: "Wodkowski, PawelX" <pawelx.wodkowski@intel.com>
Cc: Dev <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] replaced O(n^2) sort in sort_by_physaddr() with qsort() from standard library
Date: Mon, 15 Dec 2014 08:29:10 -0600	[thread overview]
Message-ID: <CADNuJVr3oaAYRuWD29N1j=ZW4TMX_X83K_mxanfR7gOq7mhW9w@mail.gmail.com> (raw)
In-Reply-To: <F6F2A6264E145F47A18AB6DF8E87425D12B79F22@IRSMSX102.ger.corp.intel.com>

FWIW, it surprised the heck out of me as well.

Turns out that even though I'm compiling in 64-bit mode, gcc has
sizeof(int) as 4 bytes rather than 8. Not really sure what the scoop is on
that, but the standard leaves that up to the compiler. I'm used to int
always being the "natural size" on the CPU/OS, so for a 64-bit executable
on Intel, I assumed int would be 64-bit.

Being an embedded developer for so many years, I rarely use semi-defined
data types just to avoid these sorts of problems.

On Mon, Dec 15, 2014 at 7:20 AM, Wodkowski, PawelX <
pawelx.wodkowski@intel.com> wrote:
>
> > Because it doesn't work correctly :-)
>
> It should, what I am missing here? :P
>
> Pawel
>
>

  reply	other threads:[~2014-12-15 14:29 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-12-11 16:05 Jay Rolette
2014-12-15  9:05 ` Wodkowski, PawelX
2014-12-15 13:17   ` Jay Rolette
2014-12-15 13:20     ` Wodkowski, PawelX
2014-12-15 14:29       ` Jay Rolette [this message]
2014-12-15 14:55         ` Richardson, Bruce
2014-12-15 14:24   ` Ananyev, Konstantin
2014-12-16 18:39 ` Ananyev, Konstantin
2014-12-16 19:18   ` Jay Rolette
2014-12-16 19:20     ` Jay Rolette
2014-12-17 11:00       ` Ananyev, Konstantin
2014-12-17 13:08         ` Qiu, Michael
2014-12-17 13:35           ` Jay Rolette
2014-12-17 13:31 Jay Rolette
2014-12-17 14:27 ` Thomas Monjalon
2014-12-17 15:07   ` Jay Rolette
2014-12-17 15:27     ` Bruce Richardson
2015-09-09 10:35 ` Gonzalez Monroy, Sergio
2015-09-10 11:49   ` Jay Rolette

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