391             int thr1y, thr2y, off1, off2, thr1, thr2, a1, a2;  in jpegd_setup_pp()  local
396                 thr1y = (219 - 2 * thr1) / 2;  in jpegd_setup_pp()
398                 thr2y = 219 - thr1y;  in jpegd_setup_pp()
400                 tmp1 = (thr1y * 256) / thr1;  in jpegd_setup_pp()
401                 tmp2 = ((thr2y - thr1y) * 256) / (thr2 - thr1);  in jpegd_setup_pp()
402                 off1 = ((thr1y - ((tmp2 * thr1) / 256)) * a) / 256;  in jpegd_setup_pp()
412                 thr1y = 128 - thr1;  in jpegd_setup_pp()
414                 thr2y = 256 - thr1y;  in jpegd_setup_pp()
415                 a1 = (thr1y * 256) / thr1;  in jpegd_setup_pp()
416                 a2 = ((thr2y - thr1y) * 256) / (thr2 - thr1);  in jpegd_setup_pp()
417                 off1 = thr1y - (a2 * thr1) / 256;  in jpegd_setup_pp()