author | haftmann |
Thu, 04 Jan 2007 17:17:48 +0100 | |
changeset 21994 | dfa5133dbe73 |
parent 21993 | 4b802a9e0738 |
child 22751 | 1bfd75c1f232 |
permissions | -rw-r--r-- |
structure ROOT = struct structure Nat = struct datatype nat = Zero_nat | Suc of nat; fun plus_nat (Suc m) n = plus_nat m (Suc n) | plus_nat Zero_nat y = y; fun times_nat (Suc m) n = plus_nat n (times_nat m n) | times_nat Zero_nat n = Zero_nat; end; (*struct Nat*) structure Codegen = struct fun fac n = (case n of Nat.Zero_nat => Nat.Suc Nat.Zero_nat | Nat.Suc m => Nat.times_nat n (fac m)); end; (*struct Codegen*) end; (*struct ROOT*)