[Vorbis-dev] Floor1 posts flag

[Eldhelrim]

Hello,

I'm having problems to understand one thing in the floor1 encode and inverse
functions in libvorbis 1.2.3 (I haven't had time to update myself to 1.3.1).
There are some bitwise-and operations involving the floor posts, with 0x7fff
and 0x8000, but I can't get to understand what's exactly their purpose... as
far as I understand, that most significant bit is some kind of flag, but
what exactly is it marking? I mean, what is the difference between a post
with that bit set, and a post with the bit unset?

Thank you.
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