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Lines Matching full:r2_diff

849         int r2_diff = rgb[bg[pat].rgb2_max].r - r2_min;
864             r2 = r2_min + (r2_diff * yidx) / yidx_max;
867             r2_inv = r2_min + (r2_diff * (yidx_max-yidx)) / yidx_max;