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List:       kde-devel
Subject:    Re: Byte order conversions
From:       Szombathelyi_György <gyurco () freemail ! hu>
Date:       2004-10-27 13:28:05
Message-ID: 417FA265.7090709 () freemail ! hu
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Thiago Macieira wrote:

> Szombathelyi György wrote:
> 
>>Is there anyone who knows convenient byte-order conversion functions in
>>QT/kdelibs? If not, then what about adding some functions like
>>{be2me,le2me,me2be,me2le}_{16,32,64) (prefixed with the usual 'K')?. As
>>I browse through the code, every piece of code which requires this
>>functionality implements its own solution, usually with ugly macros and
>>#ifdef WORDS_BIGENDIAN conditionals.
> 
> 
> htons, htonl, ntohs, ntohl should do the big-endian to machine-endian stuff. 
> 
And my Linux machines have byteswap.h, which does 64 bit, too. However I 
guess, these aren't too portable. I can think of a wrapper header file 
which encapsulates the functionality in some easy-to-use macros. The 
implementation checks for bswap_xx functions (in byteswap.h), if not 
found then {h|n}toxx functions (in netinet/in.h or something that the 
BSD folks likes, too), and if neither present implement these with some 
custom code. Or any better idea?

Bye,
György

 
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