CLIP_SYMM         275 libavcodec/rv40.c     diff = CLIP_SYMM((t + 4) >> 3, lim_p0q0);
CLIP_SYMM         280 libavcodec/rv40.c         src[-2*step] = cm[src[-2*step] - CLIP_SYMM(t, lim_p1)];
CLIP_SYMM         284 libavcodec/rv40.c         src[ 1*step] = cm[src[ 1*step] - CLIP_SYMM(t, lim_q1)];