linux-kernel - Re: scripts/makelst: bc -> shell Re: sed _s_gnu_alternatives

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Date:	Sat, 3 Feb 2007 12:24:59 +0100
From:	David Weinehall <tao@....umu.se>
To:	Oleg Verych <olecom@...wer.upol.cz>
Cc:	Tim Schmielau <tim@...sik3.uni-rostock.de>,
	Rob Landley <rob@...dley.net>, Andrew Morton <akpm@...l.org>,
	Sam Ravnborg <sam@...nborg.org>,
	Roman Zippel <zippel@...ux-m68k.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: scripts/makelst: bc -> shell Re: sed _s_gnu_alternatives_ (Re: [rft] (g)awk substitution)

On Sat, Jan 27, 2007 at 06:38:36AM +0000, Oleg Verych wrote:
[snip]
> ,-*- diff snip -*-
> |-    t4=`echo $t3 | gawk '{ print $1 }'`
> |-    t5=`echo $t1 | gawk '{ print $1 }'`
> |+    t4=`pos_param 1 $t3`
> |+    t5=`pos_param 1 $t1`
> 5     t6=`echo $t4 - $t5 | tr a-f A-F`
> 6     t7=`( echo  ibase=16 ; echo $t6 ) | bc`
> `-*-
> 
> I've just noticed, that things on lines 5 and 6 may be optimized.
> 
> t7=`printf "%lu" $(( 0x$t4 - 0x$t5 ))`

%lu does not seem to agree with SuSv3:

http://www.opengroup.org/onlinepubs/009695399/utilities/printf.html
http://www.opengroup.org/onlinepubs/009695399/basedefs/xbd_chap05.html

[snip]


Regards: David Weinehall
-- 
 /) David Weinehall <tao@....umu.se> /) Northern lights wander      (\
//  Maintainer of the v2.0 kernel   //  Dance across the winter sky //
\)  http://www.acc.umu.se/~tao/    (/   Full colour fire           (/
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