From c703a92136ce579282c63c6e31fff76cc84b37ce Mon Sep 17 00:00:00 2001
From: bringert <bringert@cs.chalmers.se>
Date: Tue, 6 Dec 2005 16:33:40 +0000
Subject: Transfer: Changed transfer program file extension from .tr to .tra to
 avoid collision with Troff file extension.

---
 transfer/lib/nat.tra | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 transfer/lib/nat.tra

(limited to 'transfer/lib/nat.tra')

diff --git a/transfer/lib/nat.tra b/transfer/lib/nat.tra
new file mode 100644
index 000000000..b13a809ed
--- /dev/null
+++ b/transfer/lib/nat.tra
@@ -0,0 +1,24 @@
+import prelude
+
+data Nat : Type where
+	Zero : Nat
+  	Succ : (n:Nat) -> Nat
+
+add_Nat : Add Nat
+add_Nat = rec zero = Zero
+	      plus = natPlus
+
+natPlus : Nat -> Nat -> Nat
+natPlus Zero y = y
+natPlus (Succ x) y = Succ (natPlus x y)
+
+pred : Nat -> Nat
+pred Zero = Zero
+pred (Succ n) = n
+
+natToInt : Nat -> Integer
+natToInt Zero = 0
+natToInt (Succ n) = 1 + natToInt n
+
+intToNat : Integer -> Nat
+intToNat n = if n == 0 then Zero else Succ (intToNat (n-1))
-- 
cgit v1.2.3