From: Joel VanderWerf <vjoel@...>
Date: 2006-03-30T05:40:06+09:00
Subject: Re: unpack signed short in network (big-endian) byte order

baumanj@gmail.com wrote:
> Is there any particular reason why there is no format specifier in the
> String.unpack method for unpacking a signed short in network byte
> order? There seems only to be one for unsigned, which can then be
> converted to signed with a proc like this:
> 
> length = 16
> max = 2**length-1
> mid = 2**(length-1)
> to_signed = proc {|n| (n >= mid) ? -((n ^ max) + 1) : n}
> 
> It seems reasonable to add a format specifier to do this directly.
> Thoughts?
> 

I'd vote for that. Looks like you already found this thread :)

http://blade.nagaokaut.ac.jp/cgi-bin/vframe.rb/ruby/ruby-talk/165774?165771-168359


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      vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407