square_quadratic  332 libavfilter/af_mcompand.c     square_quadratic(x    , p->coefs);
square_quadratic  333 libavfilter/af_mcompand.c     square_quadratic(x + 3, p->coefs + 5);
square_quadratic  334 libavfilter/af_mcompand.c     square_quadratic(x + 6, p->coefs + 10);