[XviD-devel] Floating Point Operations

[Christoph Lampert]

Hi,

I'll do "real" GMC next, which involves some matrix operations using
float(!) values (at least at the current stage). 

I hope this won't be eating much CPU, but it involves: 

* several scalar products of vectors which are of the length 2*N
where N is the total number of macroblocks (=1620 for full PAL, 
=320 for CIF). 

* calculating the inverse of a symmetric 4x4 matrix
(or rather solving a system of 4 linear equations for a 4-vector) 

* entries between the order of 10^7 and  10^{-7} 

Before I create data structures for this, does anyone have suggestion 
how to implement this in the fastest possible way? How to make this
compatible for future 3dnow, SSE, SSE2 versions? 

gruel