410             int thr1y, thr2y, off1, off2, thr1, thr2, a1, a2;  in jpegd_setup_pp()  local
415                 thr1y = (219 - 2 * thr1) / 2;  in jpegd_setup_pp()
417                 thr2y = 219 - thr1y;  in jpegd_setup_pp()
419                 tmp1 = (thr1y * 256) / thr1;  in jpegd_setup_pp()
420                 tmp2 = ((thr2y - thr1y) * 256) / (thr2 - thr1);  in jpegd_setup_pp()
421                 off1 = ((thr1y - ((tmp2 * thr1) / 256)) * a) / 256;  in jpegd_setup_pp()
431                 thr1y = 128 - thr1;  in jpegd_setup_pp()
433                 thr2y = 256 - thr1y;  in jpegd_setup_pp()
434                 a1 = (thr1y * 256) / thr1;  in jpegd_setup_pp()
435                 a2 = ((thr2y - thr1y) * 256) / (thr2 - thr1);  in jpegd_setup_pp()
436                 off1 = thr1y - (a2 * thr1) / 256;  in jpegd_setup_pp()