[FFmpeg-devel] Mixed data type in SIMD code?
Tue Mar 4 00:42:51 CET 2008
On Mon, Mar 03, 2008 at 04:30:08PM -0700, Loren Merritt wrote:
> On Mon, 3 Mar 2008, Michael Niedermayer wrote:
> > Also i doubt we use or ever will use packed double.
> flac encoder does. Single isn't precise enough for a linear sum of up
> to 16k elements. Reordering the sum to a tree made it half-way
> decent decent precision, but also made it as slow as double.
What about something like:
double_sum += sum;
Or maybe even using int32_t ?
and no, ive not looked at the code ...
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
Those who are too smart to engage in politics are punished by being
governed by those who are dumber. -- Plato
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