Lines Matching refs:x_mid
448 int x_inc0, x_mid;
456 x_mid = ((blkwidth + x_pos > 0) ? -x_pos : blkwidth); /* stopping point */
462 x_mid = ((picwidth > x_pos) ? picwidth - x_pos - 1 : 0); /* clip negative to zero, encode fool proof! */
467 x_mid = blkwidth; /* just one run */
474 y_inc0 = (x_inc0 ? - x_mid : -blkwidth + x_mid); /* offset depending on x_inc1 and x_inc0 */
481 y_inc1 = (x_inc0 ? - x_mid : -blkwidth + x_mid); /* saturate */
487 y_inc1 = (x_inc0 ? - x_mid : -blkwidth + x_mid);
501 blkwidth -= x_mid; /* to use in the loop limit */
511 for (i = x_mid; i > 0; i--) /* first or third quarter */
531 for (i = x_mid; i > 0; i--) /* first or third quarter */