finddiff2        1002 3rdparty/libtiff/tif_fax3.c         b2 = finddiff2(rp, b1, bits, PIXEL(rp,b1));
finddiff2        1006 3rdparty/libtiff/tif_fax3.c                 a2 = finddiff2(bp, a1, bits, PIXEL(bp,a1));