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[non-BE] fix for 3by3 matrix inverse computaiton when det is negative

TYAGIRIS requested to merge sba_det_mat_inv3by3_fix into main
  • Related issues:
  • Requested reviewers:

Reason why this change is needed

  • In SBA high bitrate mode, inverse of determinant computation has a bug when det < 0.

Description of the change

  • Fixed the condition that checks for negative determinant

Affected operating points

  • 256 kbps and above with HOA2 and HOA3 input
  • Bitstream is compatible
  • Encoder output non BE

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