From kde-devel  Wed Oct 27 13:05:18 2004
From: =?iso-8859-2?q?R=FCdiger_Kn=F6rig?= <ruediger () knoerig ! de>
Date: Wed, 27 Oct 2004 13:05:18 +0000
To: kde-devel
Subject: Re: Byte order conversions
Message-Id: <200410271505.18766.ruediger () knoerig ! de>
X-MARC-Message: https://marc.info/?l=kde-devel&m=109888428703139

Am Mittwoch, 27. Oktober 2004 15:17 schrieb Szombathelyi György:
> Rüdiger Knörig wrote:
>   > The attachment contains a template class which will do the job. For
>
> automatic
>
> > conversion of custom datatypes the autoconf macros AC_C_BIGENDIAN(),
> > AC_CHECK_SIZE(short) and AC_CHECK_SIZE(int) have to be executed.
> > If these macros exist you can convert from host endianess via:
> > ConvertEndianess<double>::convert(doubleval,Endian::BigEndian);
> > or change the endianess via
> > ConvertEndianess<double>::swapEndianess(doubleval);
>
> Isn't it over-engineered a bit? I mean that if some code needs byte
> order conversion, it usually does it in a loop, so some simple macro or
> inline fuction would be faster.
It results in an inline method call and should be very fast since it uses 
different algorithm depending on the size of the input. BTW: are there any 
x86 machine instructions for endianess conversion?
>
> Bye,
> György
>
> >> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to
> >> unsubscribe <<

 
>> Visit http://mail.kde.org/mailman/listinfo/kde-devel#unsub to unsubscribe <<