Fixed point matrix representation considered harmful

Daniel Stone daniel at
Thu Mar 20 11:04:39 PDT 2008

On Thu, Mar 20, 2008 at 06:48:23PM +0100, Joerg Sonnenberger wrote:
> On Wed, Mar 19, 2008 at 09:55:34AM -0700, Keith Packard wrote:
> > On Wed, 2008-03-19 at 16:59 +0100, Joerg Sonnenberger wrote:
> > > OK, so you basically want to specify a 32bit (or whatever) IEEE format
> > > without all the nasty parts? E.g. subnormals and exception values?
> > 
> > Exception values (NaN, +/-inf) should be invalid, but denorms shouldn't
> > cause any issues for us.
> Except that it complicates decoding for non-IEEE platforms. Think VAX.

Are we actually designing for VAX these days? There aren't many other
non-IEEE platforms that I know of: even lame embedded/consumer chips are
pretty much all IEEE now, TTBOMK.

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