436   FieldElement z1z1, z2z2, u1, u2, s1, s2, h, i, j, r, v;  in AddJacobian()  local
442   Square(&z1z1, a.z);  in AddJacobian()
451   Mul(&u2, b.x, z1z1);  in AddJacobian()
458   Mul(&s2, a.z, z1z1);  in AddJacobian()
496   Add(&z1z1, z1z1, z2z2);  in AddJacobian()
500   Subtract(&out->z, z2z2, z1z1);  in AddJacobian()
506     z1z1[k] = v[k] << 1;  in AddJacobian()
508   Add(&z1z1, j, z1z1);  in AddJacobian()
509   Reduce(&z1z1);  in AddJacobian()
511   Subtract(&out->x, out->x, z1z1);  in AddJacobian()
519   Subtract(&z1z1, v, out->x);  in AddJacobian()
520   Reduce(&z1z1);  in AddJacobian()
521   Mul(&z1z1, z1z1, r);  in AddJacobian()
522   Subtract(&out->y, z1z1, s1);  in AddJacobian()