ilinear          1320 contrib/libtests/pngstest.c    out->r = ilinear(in->r);
ilinear          1330 contrib/libtests/pngstest.c          out->b = ilinear(in->b);
ilinear          1335 contrib/libtests/pngstest.c       out->g = ilinear(in->g);
ilinear          1344 contrib/libtests/pngstest.c          out->b = ilinear(in->b);
ilinear          1429 contrib/libtests/pngstest.c       out->r = out->g = out->b = ilinear(in->g);