Move transfer into the GF repo.

1 files changed, 23 insertions, 0 deletions

diff --git a/transfer/examples/nat.tr b/transfer/examples/nat.tr
new file mode 100644
index 000000000..f67dc55ce
--- /dev/null
+++ b/transfer/examples/nat.tr
@@ -0,0 +1,23 @@
+data Nat : Type where { 
+	Zero : Nat ;
+  	Succ : (n:Nat) -> Nat ;
+ } ;
+
+plus : Nat -> Nat -> Nat ;
+plus Zero y = y ;
+plus (Succ x) y = Succ (plus x y) ;
+
+pred : Nat -> Nat ;
+pred Zero = Zero ;
+pred (Succ n) = n ;
+
+natToInt : Nat -> Int ;
+natToInt Zero = 0 ;
+natToInt (Succ n) = 1 + natToInt n ;
+
+plus : Nat -> Nat -> Nat ;
+plus Zero y = y ;
+plus (Succ x) y = Succ (plus x y) ;
+
+intToNat : Int -> Nat ;
+intToNat n = if n == 0 then Zero else Succ (intToNat (n-1)) ;