Wireshark · Ethereal-dev: Re: [Ethereal-dev] Handling DOUBLES

[Frank Singleton <frank.singleton@xxxxxxxxxxxx>]

Guy Harris wrote:
> 
> > The proto_tree_add_item() function pulls the data from the tvbuff
> > directly. That means that there has to be some universal
> > double-precision floating point format that is used in protocols.
> >
> > There is for integers, but we have to specify big-endian or
> > little-endian
> > (that's the reason for the "little_endian" argument to
> > proto_tree_add_item()).
> >
> > I'm not an expert in floating-point representations and how they're
> > used on the wire for various protocols.
> 
> There isn't any truly universal format...
> 
> ...but, at this point, most modern protocols that shove floating-point
> numbers over the wire in a standard format (rather than the native
> format) probably do so in IEEE format. 


<snip>


Hi,  

Yes we need IEEE 754-1985 for dissection of floating 
point types such as float, double and long double 
in our CORBA stuff also.

I think I have some docs on this, so I will have a
crack at it.

/Frank

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