fixed point vs fixed decimal

John Roth johnroth at ameritech.net
Tue Jan 7 14:18:22 CET 2003


"Robin Becker" <robin at jessikat.fsnet.co.uk> wrote in message
news:EN6w0WAFRpG+EwB8 at jessikat.fsnet.co.uk...
> In article <v1k1tts6o9ta1e at news.supernews.com>, John Roth
> <johnroth at ameritech.net> writes
> ......
> >
> >I don't think I've ever seen **conceptual** fixed point binary.
> >**Implementation**
> >fixed point binary, yes, but then it was conceptually decimal.
> >
> >John Roth
> ..... I believe Adobe's internal representation is a binary fixed
point
> scheme. I think it is based on a 32bit int with 16 bits as the
fraction.
>
> I believe that the FreeType font package also uses the same
> representation.

You're right! I'd forgotten about the applications in graphics and
motor control where floats are too expensive.

However, that's not this application area.

John Roth
> --
> Robin Becker






More information about the Python-list mailing list