Files
ffmpeg/libavfilter
Andreas Rheinhardt ddf443f1e9 avfilter/vf_fsppdsp: Fix left shifts of negative numbers
They are undefined behavior and UBSan warns about them
(in the checkasm test). Put the shifts in the constants
instead. This even gives a tiny speedup here:

Old benchmarks:
column_fidct_c:                                       3369.9 ( 1.00x)
column_fidct_sse2:                                     829.1 ( 4.06x)
New benchmarks:
column_fidct_c:                                       3304.2 ( 1.00x)
column_fidct_sse2:                                     827.9 ( 3.99x)

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
2025-11-17 12:18:12 +01:00
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