GEN_PQR_D
LOAD(d, GEN_PQR_D);
P_D_SYNDROME(GEN_PQR_D, GEN_PQR_C, p);
Q_D_SYNDROME(GEN_PQR_D, GEN_PQR_C, q);
R_D_SYNDROME(GEN_PQR_D, GEN_PQR_C, r);