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Zuxy Meng authored
use xorps instead of mulps to toggle the sign of a float, as suggested by Software Optimization Guide for AMD64 Processors.
Patch by Zuxy Meng < zuxy POIS meng AH  gmail POIS com > OKed by Michael
Original thread:
Date: Mar 5, 2006 8:15 PM
Subject: [Ffmpeg-devel] [PATCH] Little optimization to fft_sse.c

Originally committed as revision 5112 to svn://svn.ffmpeg.org/ffmpeg/trunk
2ffb22d2
History
FFmpeg README
-------------

1) Documentation
----------------

* Read the documentation in the doc/ directory.

2) Licensing
------------

* Read the file COPYING. ffmpeg and the associated libraries EXCEPT
  liba52 and libpostproc are licensed under the Lesser GNU General
  Public License.

* liba52 and libpostproc are distributed under the GNU General Public
  License and their compilation and use is optional in ffmpeg.

Fabrice Bellard.