[Haskell-cafe] Endian conversion

[Tomasz Zielonka]

On 10/3/05, Udo Stenzel <u.stenzel at web.de> wrote:
>
> Joel Reymont wrote:
> > Are there any endian conversion routines for Haskell? I'm looking to
> > build binary packets on top of NewBinary.Binary but my data is coming
> > in little-endian whereas I'll need to send it out big endian.
>
> Why don't you pull out 4 bytes and assemble them manually? Three
> shifts, logical ors and fromIntegrals aren't that much of a burden after
> all.


Exactly! Network encodings for integers are precisely, mathematically
defined. Surprisingly, it is very difficult to see (it was a revelation for
me
too). Perhaps the reason is that people get used to the mess in C
networking code.

Best regards
Tomasz
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