[FFmpeg-devel] Mixed data type in SIMD code?

Loren Merritt lorenm
Tue Mar 4 00:30:08 CET 2008

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.

--Loren Merritt

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