author | haftmann |
Tue, 07 Sep 2010 16:58:01 +0200 | |
changeset 39210 | 985b13c5a61d |
parent 30226 | 2f4684e2ea95 |
permissions | -rw-r--r-- |
structure Nat = struct datatype nat = Suc of nat | Zero_nat; fun less_nat m (Suc n) = less_eq_nat m n | less_nat n Zero_nat = false and less_eq_nat (Suc m) n = less_nat m n | less_eq_nat Zero_nat n = true; end; (*struct Nat*) structure Codegen = struct fun in_interval (k, l) n = (Nat.less_eq_nat k n) andalso (Nat.less_eq_nat n l); end; (*struct Codegen*)