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2016-01-13Revert "Merge "Change highbd variance rounding to prevent negative variance.""Alex Converse
This reverts commit ea48370a500537906d62544ca4ed75301d79e772, reversing changes made to 15939cb2d76c773950cda40988ede89e111872ea. The commit was insufficiently tested and causes failures. Change-Id: I623d6fc2cd3ae6fd42d0abab1f8eada465ae57a7
2015-11-24Change highbd variance rounding to prevent negative variance.Alex Converse
Always round sum error and sum square error toward zero in variance calculations. This prevents variance from becoming negative. Avoiding rounding variance at all might be better but would be far more invasive. Change-Id: Icf24e0e75ff94952fc026ba6a4d26adf8d373f1c
2015-07-07Move sub pixel variance to vpx_dspJohann
Change-Id: I66bf6720c396c89aa2d1fd26d5d52bf5d5e3dff1
2015-05-26Move variance functions to vpx_dspJohann
subpel functions will be moved in another patch. Change-Id: Idb2e049bad0b9b32ac42cc7731cd6903de2826ce
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