libcrux_ml_kem_vector_portable_sub_b8
b = libcrux_ml_kem_vector_portable_sub_b8(a, &t);
Eurydice_arr_d6 a_minus_b = libcrux_ml_kem_vector_portable_sub_b8(b, &a);
diff = libcrux_ml_kem_vector_portable_sub_b8(myself->data[i0], &coefficient_normal_form);
re->data[j + step] = libcrux_ml_kem_vector_portable_sub_b8(re->data[j], &t);