c
111     if (isTiled(tif)) {
112         if ((td->td_tilelength % (sp->v_sampling ? sp->v_sampling * DCTSIZE : 1)) != 0) {
113             TIFFErrorExt(tif->tif_clientdata, module,
114                          "JPEG tile height must be multiple of %d",
115                          sp->v_sampling * DCTSIZE);
116             return (0);
117         }
118         if ((td->td_tilewidth % (sp->h_sampling ? sp->h_sampling * DCTSIZE : 1)) != 0) {
119             TIFFErrorExt(tif->tif_clientdata, module,
120                          "JPEG tile width must be multiple of %d",
121                          sp->h_sampling * DCTSIZE);
122             return (0);
123         }
