[Ffmpeg-devel] [PATCH] Little optimization to fft_sse.c

[Guillaume POIRIER]

Hi,

On 3/5/06, Zuxy Meng <zuxy.meng at gmail.com> wrote:
> Hi,
>
> This patch uses xorps instead of mulps to toggle the sign of a float,
> as suggested by Software Optimization Guide for AMD64 Processors.

Did you benchmark the speed difference with the hardware counters?

Guillaume
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Reimar D?ffinger