[x264-devel] does overflow in abs2() ?

[chen]

In the SATD, x264 call abs2() to accelerate 2 pixels parallelism.
I test the function abs2(), it seem can't output right result.
of course, it is less possible mistake.

eg:
abs(0) & abs(-1) ---> abs2(0x0000FFFF) ---> 0x00010001
 
Am I right?
 
Thanks,
Min
 
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