test.ML

HOL/Arith: definition of diff now uses pred, not nat_rec

let
 fun tac ss = resolve_tac(prems_of_ss ss) ORELSE' asm_simp_tac ss;
 val ss = set_prove_tac(HOL_ss addsimps [Suc_lessD],tac)
in prove_goal Nat.thy "!!x. Suc(Suc(Suc(x)))<y ==> x<y"
     (fn _ => [asm_simp_tac ss 1])
end;