fp t57,
   t56;
      t57 = RATIONAL(-2.0,3.0);
      t56 = RATIONAL(1.0,3.0);
      coeff_dyy_m1_m1 = t56;
      coeff_dyy_0_m1 = t56;
      coeff_dyy_p1_m1 = t56;
      coeff_dyy_m1_0 = t57;
      coeff_dyy_0_0 = t57;
      coeff_dyy_p1_0 = t57;
      coeff_dyy_m1_p1 = t56;
      coeff_dyy_0_p1 = t56;
      coeff_dyy_p1_p1 = t56;