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From: wdebruij@dds.nl
To: "Måns Rullgård" <mru@kth.se>
Cc: linux-kernel@vger.kernel.org
Subject: Re: printk and long long
Date: Wed, 11 Feb 2004 15:15:20 +0100	[thread overview]
Message-ID: <1076508920.402a38f8ee106@webmail.dds.nl> (raw)
In-Reply-To: <yw1xy8r9iuha.fsf@kth.se>

Quoting Måns Rullgård <mru@kth.se>:

> 
> And how do you plan to make sense of the printed value?
> 

perhaps I was a bit quick with replying. As others have pointed out, you should
specify the precision to be able to glue the two parts together. Ideally, this
should be done using a "%.8lx%.8lx", since the length of the variable in hex is
static. Unfortunately, it seems %ld is requested, in which case "%ld*(2^32)+%ld"
works (for humans), but is obviously not great.

I guess you'll need a number of extra tests (if lower 32bits > 1 billion ..) and
specific printk statements if the output should be shown as a correct 10-base
number. 

I don't know, it depends on the specific use-case, really. If at all possible, I
would stick to the hex-representation.

  reply	other threads:[~2004-02-11 14:15 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-02-11 12:49 printk and long long sting sting
2004-02-11 13:35 ` wdebruij
2004-02-11 13:48   ` Maciej Zenczykowski
2004-02-11 14:04     ` vda
2004-02-11 15:58       ` Maciej Zenczykowski
2004-02-11 19:41         ` H. Peter Anvin
2004-02-11 20:32           ` Måns Rullgård
2004-02-11 21:46             ` Chris Friesen
2004-02-11 22:38               ` Timothy Miller
2004-02-11 22:23             ` Andreas Schwab
2004-02-11 23:11               ` Måns Rullgård
2004-02-11 23:53                 ` H. Peter Anvin
2004-02-11 16:59       ` Dick Streefland
2004-02-11 14:03   ` Måns Rullgård
2004-02-11 14:15     ` wdebruij [this message]
2004-02-11 15:23   ` Richard B. Johnson
2004-02-13  0:26     ` Peter Chubb
  -- strict thread matches above, loose matches on Subject: below --
2004-02-11 13:54 Bart Hartgers
2004-02-11 14:04 ` YOSHIFUJI Hideaki / 吉藤英明
2004-02-11 14:13 ` Andreas Schwab

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