SA3_3D_BITS       301 dev/isa/ym.c   	e = (val->left * (SA3_3D_BITS + 1) + (SA3_3D_BITS + 1) / 2) /
SA3_3D_BITS       303 dev/isa/ym.c   	    (val->right * (SA3_3D_BITS + 1) + (SA3_3D_BITS + 1) / 2) /