[XviD-devel] [BUG]

[skal]

	Re,

On Wed, 2003-10-29 at 18:45, skal wrote:

> 	indeed, i think a reminder/clarification about 'unprecise'
> 	wouldn't hurt:
> 
	... it would hurt clarifying, since... it's wrong :)

IEEE-1180 specifies an acceptable range of errors when you follow
> the following process:
> 1) take a random 8x8 matrix with coefficients in range [-R,R[
> 2) perform double-precision "exact" fdct on this matrix
> 3) Apply the Idct you want to test to the result of 2)
> 4) Compare result of 3) with the original random matrix of 1)
> 5) repeat 10000 times
> 

	In fact the test is not that one. Instead, you
	must compare, at step 3), the result of the reference
	idct (double-precision) against your Idct. And not
	compare with the original matrix (which is an interesting
	test, but not the IEEE one).

Skal